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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

For the fiscal year ended December 31, 2006

OR

For the transition period from                  to                 

Commission file number 1-15477

MAXWELL TECHNOLOGIES, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (858) 503-3300

Securities registered pursuant to Section 12(b) of the Act:

None

Securities registered pursuant to Section 12(g) of the Act:

Common Stock, par value $0.10 per share

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    YES  ¨    NO  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    YES  ¨    NO  x

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    YES  x    NO  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    YES  ¨    NO  x

The aggregate market value of Common Stock held by non-affiliates as of June 30, 2006 based on the closing price of the Common Stock on the Nasdaq National Market was $123,789,057.

The number of shares of the registrant’s Common Stock outstanding as of March 9, 2007 was 17,407,885 shares.

DOCUMENTS INCORPORATED BY REFERENCE

Specified portions of the registrant’s definitive Proxy Statement to be issued in conjunction with the registrant’s 2007 Annual Meeting of Stockholders, which is expected to be filed not later than 120 days after the registrant’s fiscal year ended December 31, 2006, are incorporated by reference into Part III of this Annual Report. Except as expressly incorporated by reference, the registrant’s Proxy Statement shall not be deemed to be a part of this Annual Report on Form 10-K.

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MAXWELL TECHNOLOGIES, INC.

INDEX TO ANNUAL REPORT ON FORM 10-K

For the fiscal year ended December 31, 2006

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

Some of the statements contained in this Annual Report on Form 10-K and incorporated herein by reference discuss our plans and strategies for our business or make other forward-looking statements, within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. The words “anticipates,” “believes,” “estimates,” “expects,” “plans,” “intends,” “may,” “could,” “will,” “continue,” “seek,” “should,” “would” and similar expressions are intended to identify these forward-looking statements, but are not the exclusive means of identifying them. These forward-looking statements reflect the current views and beliefs of our management; however, various risks, uncertainties and contingencies could cause our actual results, performance or achievements to differ materially from those expressed in, or implied by, our statements. Such risks, uncertainties and contingencies include the following:

Many of these factors are beyond our control. Additionally, there can be no assurance that we will not incur new or additional unforeseen costs in connection with the ongoing conduct of our business. Accordingly, any forward-looking statements included herein do not purport to be predictions of future events or circumstances and may not be realized.

For a discussion of important risks associated with an investment in our securities, including factors that could cause actual results to differ materially from expectations referred to in the forward-looking statements, see “Risk Factors” beginning on page 17 of this document. We do not have any obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise.

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PART I

Item 1. Business

Introduction

We develop, manufacture and market energy storage and power delivery products for transportation, industrial telecommunications and other applications and microelectronic products for space and satellite applications. Our products are designed and manufactured to perform reliably with minimal maintenance for the life of the applications into which they are integrated. We believe that this “life-of-the-application” reliability differentiates our products from those of our competitors and enables them to command higher profit margins than commodity products. We focus on the following lines of high-reliability products:

In keeping with our strategic focus on high-value, high-margin product lines, we have exited several non-strategic, low-margin businesses to intensify our focus on our core high-reliability product lines. These actions culminated with the sale of our Winding Equipment product line in December 2003, and the phase-out of our power systems product line in 2004.

General Overview

Each of our high-reliability electronic component product lines addresses a specific industry or, in the case of our ultracapacitor products, several distinct industry segments.

Ultracapacitors

Ultracapacitors are used to enhance the efficiency and reliability of devices or systems that generate or consume electrical energy. They differ from other energy storage and power delivery products in that they combine rapid charge/discharge capabilities typically associated with film and electrolytic capacitors and energy storage capacity generally associated with batteries. Although batteries store significantly more electrical energy than ultracapacitors, they cannot deliver or absorb energy as rapidly and efficiently as an ultracapacitor. Conversely, although electrolytic capacitors can deliver bursts of high power very rapidly, they have extremely limited energy storage capacity, and therefore cannot sustain power delivery for as much as a full second. Also, unlike batteries, which store electrical energy by means of a chemical reaction and experience gradual depletion of their energy storage and delivery capability after a few thousand charge/discharge cycles, ultracapacitors’ energy storage and power delivery mechanisms involve no chemical reaction, so they can be charged and discharged hundreds of thousands to millions of times with minimal performance degradation. This ability to store energy, deliver bursts of power and perform reliably for many years with little or no maintenance makes ultracapacitors an attractive energy-enhancement option for a wide range of energy-consuming and generating devices and systems.

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Based on potential volumes, we believe that the transportation industry represents the largest market opportunity for ultracapacitors. Transportation applications include braking energy recuperation and torque-augmentation systems for hybrid-electric buses, trucks and autos and electric rail vehicles, vehicle power network smoothing and stabilization and distributed power nodes to support electronic subsystems, including power steering and brakes and electric air-conditioning.

Our ultracapacitor products have advanced to commercial production in transportation applications such as hybrid-electric transit buses and industrial electronics applications such as wind energy, telecommunications and automated utility meter reading systems.

To reduce manufacturing cost and improve the performance of our ultracapacitor products, we have developed a proprietary “particle packaging” process to produce the carbon powder-based electrode material which accounts for a significant portion of the cost of an ultracapacitor cell. We believe that this process has enabled us to become the industry’s lowest-cost producer of electrode material, and we are now marketing it to other ultracapacitor manufacturers. Although we do not intend to license this electrode technology to other ultracapacitor or electrode manufacturers, we have licensed our proprietary cell architecture to manufacturers in Taiwan and China to expand and accelerate acceptance of our technology in the large and rapidly growing Chinese market.

High-Voltage Capacitors

High-voltage grading and coupling capacitors are used mainly in the electric utility industry. These devices prevent high-voltage arcing that can damage switches, circuit breakers, step-down transformers and other equipment that transmits, distributes or measures high-voltage electrical energy in electric utility infrastructure. The market for these products consists of expansion and upgrading of existing infrastructure and new infrastructure in developing countries. Such installations are capital-intensive and frequently are subject to regulation, availability of government funding and general economic conditions. For example, while North America has the world’s largest installed base of electric utility infrastructure, and has begun to experience more frequent power interruptions and supply problems, utility deregulation, government budget deficits, and other factors have limited recent capital spending in what historically has been a very large market for utility infrastructure components. However, projects to meet growing demand for electrical energy in developing countries, such as the Three Gorges Dam in China, continue to drive increasing global demand for high-voltage capacitors.

Radiation-Mitigated Microelectronics

Radiation-mitigated microelectronic products are used almost exclusively in the space and satellite industry. Because satellites and spacecraft are extremely expensive to manufacture and launch, and space missions typically span years or even decades, and because it is impractical or impossible to repair or replace malfunctioning parts, the industry demands electronic components that are virtually failure-free. As satellites and spacecraft routinely encounter ionizing radiation from solar flares and other natural sources, these components must be able to withstand such radiation and continue to perform reliably. For that reason, suppliers of components for space applications historically used only special radiation-hardened silicon in the manufacture of such components. However, since the space market is relatively small and the process of producing “rad-hard” silicon is very expensive, only a few government-funded wafer fabrication facilities are capable of producing such material. In addition, because it takes several years to produce a rad-hard version of a new semiconductor, components using rad-hard silicon typically are several generations behind their current commercial counterparts in terms of density, processing power and functionality.

To address the performance gap between rad-hard and commercial silicon and provide components with both increased functionality and much higher processing power, Maxwell and a few other specialty components suppliers have developed shielding, packaging, and other novel radiation mitigation techniques that allow

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sensitive commercial semiconductors to withstand space radiation effects and perform as reliably as rad-hard components. Although this market is limited in size, the value proposition for high-performance, radiation-tolerant components enables such specialty suppliers to generate profit margins much higher than those for commodity electronic components.

Business Strategy

Our primary objective is to significantly increase the company’s revenue and profit margins by creating and satisfying demand for ultracapacitor-based energy storage and power delivery solutions. To accomplish this, we are focusing on:

Establishing and expanding market opportunities for ultracapacitors by:

Becoming a preferred ultracapacitor supplier by:

We also seek to expand market opportunities and revenue for our high-voltage capacitors and radiation-mitigated microelectronic products. While these products have highly specialized applications, we are a technology leader in the market niches they serve, and thus are able to sell our products at attractive profit margins. Going forward, we plan to maintain and expand this competitive position by leveraging our technological expertise to develop new products that not only meet the demands of our current markets, but address additional applications. For example, our microelectronics group has successfully introduced a single-board computer (“SBC”) for the space and satellite market. In March 2005, Northrop Grumman Space Technologies selected our SCS750 SBC for spacecraft control and data management for the National Polar-orbiting Operational Environmental Satellite System, the U.S. government’s next generation weather satellite constellation. This product, which leverages our expertise in high-reliability and radiation-mitigation, enabled us to enter a new market by addressing an application that we did not previously serve. Likewise, in 2004, our high-voltage capacitor business introduced and delivered the first of a new line of capacitive voltage divider products.

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Products and Applications

Our products incorporate our expertise and proprietary energy storage and power delivery and microelectronics technologies at both the component and system levels for specialized, high-value applications that demand “life-of-the-application” reliability.

Ultracapacitors

Ultracapacitors, also known as electrochemical double-layer capacitors (EDLC) or supercapacitors, store energy electrostatically by polarizing an organic salt solution within a sealed package. Although ultracapacitors are electrochemical devices, no chemical reaction is involved in their energy storage mechanism. This mechanism is fully reversible, allowing ultracapacitors to be rapidly charged and discharged hundreds of thousands to millions of times with minimal performance degradation, even in the most demanding peak power applications.

Unlike electrolytic capacitors, which have very low energy storage capacity and discharge power too rapidly to be suitable for many power delivery applications, ultracapacitors have much greater energy storage capacity and can discharge power over time periods ranging from fractions of a second to several minutes.

Unlike batteries, which require minutes or hours to fully charge or discharge, ultracapacitors discharge and recharge in as little as fractions of a second. Although ultracapacitors store only about one-tenth as much electrical energy as a battery of comparable size, they can deliver or absorb electric energy up to 100 times more rapidly than batteries. Because they operate reliably through hundreds of thousands to millions of full depth of discharge cycles, compared with only hundreds to a few thousand equivalent cycles for batteries, ultracapacitors have significantly higher lifetime energy throughput, which equates to significantly lower cost on a life cycle basis.

We link our ultracapacitor cells together in packs and modules to satisfy higher voltage energy storage and power delivery requirements. Both individual cells and multi-cell products can be charged from any primary energy source, such as a battery, generator, fuel cell, solar panel or electrical outlet. Virtually any device or system whose intermittent peak power demands are greater than its average continuous power requirement is a candidate for an ultracapacitor-based energy storage and power delivery solution.

Our ultracapacitor products have significant advantages over batteries, including:

With no moving parts and no chemical reactions involved in their energy storage mechanism, ultracapacitors provide a simple, solid state-like, highly reliable solution to buffer short-term mismatches between power available and power required. Additionally, ultracapacitors offer the advantage of storing energy in the same form in which it is used, as electricity.

New applications, including increasing use of electric power in vehicles, wireless communication systems and growing demand for highly reliable, maintenance-free, back-up power for telecommunication and industrial

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installations are creating significant opportunities for more efficient and reliable energy storage and power delivery products. In many applications, power demand varies widely from moment to moment, and peak power demand typically is much greater than the average power requirement. For example, automobiles require 10 times more power to accelerate than to maintain a constant speed, and forklifts require more power to lift a heavy pallet of material than to move from place to place within a warehouse.

Engineers historically have addressed such peak power requirements by over-sizing the engine, battery or other primary energy source to satisfy all of a system’s power demands, including demands that occur infrequently and may last only fractions of a second. Sizing a primary power source to meet such transient peak power requirements, rather than for average power requirements, is costly and inefficient. If primary energy sources are coupled with specialized power components that can deliver or absorb brief bursts of high power on demand for periods of time ranging from fractions of a second to several minutes, such primary sources can be smaller, lighter and less costly.

The following diagram depicts the separation of a primary energy storage source from a peak power delivery component to satisfy the requirements of a particular application. Components that enable this separation allow designers to optimize the size, efficiency and cost of the entire electrical power system.

Peak Power Application Model

Although conventional batteries have been the most widely used component for both primary energy sourcing and peak power delivery, ultracapacitors, advanced batteries and flywheels now enable system designers to separate and optimize these functions. Based in part on our ultracapacitor products’ rapidly declining cost, high performance and “life-of-the-application” durability, they are becoming a preferred solution for many energy storage and power delivery applications.

We offer our BOOSTCAP^® ultracapacitors in numerous form factors, ranging from postage stamp size 4-farad small cells rated at 2.5 volts, to cylindrical, 2.7-volt, 3,000-farad large cells that measure approximately two inches in diameter and six inches long. Applications such as hybrid-electric bus, truck and auto drive trains, electric rail systems and UPS systems require integrated modules consisting of up to hundreds of ultracapacitor cells. To facilitate adoption of ultracapacitors for these larger systems, we have developed integration technologies, including proprietary electrical balancing and thermal management systems and interconnect technologies. We have applied for patents for certain of these technologies. In 2005 and 2006, we introduced

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several standard multi-cell packs and modules to provide fully integrated solutions for applications requiring up to thousands of volts of power. Our current standard multi-cell products each incorporate from six to 144 of our large cells to provide “plug and play” solutions for applications requiring from 15 to 390 volts. In addition, they are designed to be linked together for higher voltage applications. Our proprietary integration technology and flexible module architecture also enable us to respond to strategic customers’ requests for custom modules to satisfy requirements not met by our standard products. In 2006, we introduced more than 30 new products, including several additional cell form factors and corresponding multi-cell packs and modules to better meet the diverse requirements of the automotive, transportation, industrial and consumer electronics markets.

The chart below describes a number of representative applications for our BOOSTCAP^® ultracapacitors that are now in commercial production or are in the field-testing or prototyping and evaluation phase.

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High-Voltage Capacitors

Electric utility infrastructure includes switches, circuit breakers, step-down transformers and measurement instruments that transmit, distribute and measure high-voltage electrical energy. High-voltage capacitors are used to protect these systems from high-voltage arcing. With operational lifetimes measured in decades, these applications require high reliability and durability.

Through our acquisition in 2002 of Montena Components Ltd., now known as Maxwell Technologies SA, and the CONDIS^® line of high-voltage capacitor products, Maxwell has more than 20 years of experience in this industry, and is the world’s largest producer of such products for use in utility infrastructure. Engineers with specific expertise in high-voltage systems develop, design and test our high-voltage capacitor products in our development and production facility in Rossens, Switzerland. Our high-voltage capacitors are produced through a proprietary, automated, winding and assembly process to ensure consistent quality and reliability. We upgraded our high-voltage capacitor production facility in 2004 to double its output capacity and significantly shorten order-to-delivery intervals.

We sell our high-voltage capacitor products to large systems integrators, such as Areva and Siemens AG, which install and service electrical utility infrastructure around the world.

Radiation-Mitigated Microelectronic Products

Manufacturers of commercial and military satellites and other spacecraft require microelectronic components and sub-systems that meet specific functional requirements and can withstand exposure to gamma rays, hot electrons and protons and other environmental radiation encountered in space. In the past, microelectronic components and systems for such special applications used only specially fabricated radiation-hardened silicon. However, the process of designing and producing rad-hard silicon is lengthy and expensive, and there are only a few specialty semiconductor wafer fabricators, so supplies of rad-hard silicon are limited. As a result, demand for components made with the latest commercial silicon, protected by shielding and other radiation mitigation techniques, is growing. Commercial silicon provides higher functionality and costs significantly less than rad-hard silicon. Producing components and systems incorporating radiation-mitigated commercial silicon requires expertise in power electronics, circuit design, silicon selection, radiation shielding and extensive expertise in quality assurance testing.

We design, manufacture and market radiation-mitigated microelectronic products, including power modules, memory modules and single-board computers, for the space and satellite markets. Using highly adaptable, proprietary, packaging and shielding technology and other radiation mitigation techniques, we custom design products that allow satellite and spacecraft manufacturers to use powerful, low cost, commercial components that are protected with the level of radiation mitigation required for reliable performance in the specific orbit or environment in which they are to be deployed.

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Manufacturing

All of our internal manufacturing operations are conducted in production facilities located in San Diego, California, and Rossens, Switzerland. In addition, we have begun outsourcing large cell ultracapacitor assembly to Belton Technology Group, a contract manufacturer based in Shenzhen, China. Over the past several years, we have made substantial capital investments to outfit and expand our internal production facilities and incorporate the latest available mechanization and automation techniques and processes. We have trained our manufacturing personnel in advanced operational techniques including demand-based manufacturing. We have also added advanced information technology infrastructure and have implemented new business processes and systems to increase our manufacturing capacity and improve efficiency, planning and product quality. Our production facilities have been designed with flexible overhead power grids and modular manufacturing cells and equipment that allow factory operations to be reconfigured rapidly at minimal expense. With the completion of certain upgrades in 2006, and other upgrades and capacity expansions currently underway, along with our contract manufacturing relationship with Belton in China, we believe that we have sufficient capacity to meet near-term demand for all of our product lines.

Acceptance of our ultracapacitor products and high-voltage capacitor products depends in part on compliance and certification with a number of U.S. and foreign standards for electronic components and systems. Among the entities that promulgate such standards are Underwriters Laboratories, Canadian Standards Association and Committee European. We incorporate compliance with such standards into the quality assurance protocols we follow in manufacturing and testing these products.

Ultracapacitors

We produce ultracapacitor cells on pilot production lines in both our San Diego and Rossens facilities, and have begun outsourcing large cell ultracapacitor assembly to Belton Technology Group, a contract manufacturer based in Shenzhen, China. In 2005, we completed installation of our first high-volume, fully automated manufacturing line for our 350- and 140-farad ultracapacitors in our Rossens facility. To reduce cost, simplify assembly and facilitate automation, we have redesigned our ultracapacitor products to incorporate lower-cost materials and to reduce both the number of parts in a finished cell and the number of manufacturing process steps required to produce them,. Rather than further expanding our current ultracapacitor cell assembly lines in San Diego and Rossens, we plan to outsource future additional increments of cell assembly capacity to low-cost countries.

We produce electrode material for our BOOSTCAP products, and for sale to other ultracapacitor manufacturers, such as Yeong-Long Technologies Co., Ltd., (YEC) and Shanghai Sanjiu Electric Equipment Company, Ltd. (Sanjiu) at our San Diego headquarters location. In 2006, we completed installation of the first element of a major electrode capacity expansion that enabled us to more than double previous electrode output without additional direct labor. That expansion gave us sufficient capacity to support both our current ultracapacitor production requirements and external electrode sales. During the first half of 2007 we expect to complete facility upgrades and installation of a second electrode production line that will give us a total annual capacity of more than one million square meters of electrode material, which is more than sufficient to meet our near-term volume requirements. As demand increases, additional increments of electrode production capacity can be added within a few months of placing an order with our current equipment vendor. We intend to continue producing this proprietary material internally, and do not contemplate licensing our particle packaging technology to ultracapacitor electrode customers or competing suppliers of such material.

In 2001, we installed an automated assembly line for our 4-farad and 10-farad small cell ultracapacitors in our San Diego production facility. This line can produce approximately 40,000 to 50,000 small cells per 24-hour production day, which is more than sufficient to meet our current and projected near term small cell production demand.

In 2003, we formed an ultracapacitor manufacturing and marketing alliance with YEC, a manufacturer of electrolytic capacitors headquartered in Taichung, Taiwan, with manufacturing and sales operations in mainland

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China. We entered into this alliance to accelerate commercialization of our proprietary BOOSTCAP ultracapacitors in China, and to enhance Maxwell’s capabilities as a global supplier of ultracapacitors, with production facilities in North America and Europe, and access to facilities in Asia. This alliance allows YEC to produce and sell our ultracapacitor products on a royalty-bearing basis in the Chinese market. In 2006, we expanded our relationship with YEC to include supplying ultracapacitor electrode material to YEC for incorporation into its own ultracapacitor products, and to assist YEC in establishing worldwide distribution and marketing.

High-Voltage Capacitors

We produce our high-voltage grading and coupling capacitors in our Rossens, Switzerland facility. We believe we are the only high-voltage capacitor producer that manufactures its products with automated winding, stacking and assembly processes. This enables us to produce consistent, high quality and highly reliable products, and gives us sufficient capacity to satisfy growing global customer demand. Using advanced demand-based techniques, we upgraded the assembly portion of the process to a “cell-based,” “just-in-time” design in 2004, doubling our production capacity without adding direct labor, and significantly shortening order-to-delivery intervals. This upgrade also enabled us to manufacture products for the capacitive voltage divider market, which we did not previously serve. We believe that penetrating this new market could enable us to materially increase our High Tension capacitor revenue.

Radiation-Mitigated Microelectronics Products

We produce our radiation-mitigated microelectronics products in our San Diego production facility. We have reengineered our production processes for radiation-mitigated microelectronics, resulting in substantial reductions in cycle time and a significant increase in yield. In 2004, this facility earned QML-V and QML-Q certification by the Department of Defense procurement agency, making it one of fewer than 15 QML- certified microelectronics production facilities in the world.

Our radiation-mitigated microelectronics production operations include die characterization, packaging, electrical, environmental and life testing. As a result of manufacturing cycle time reductions and operator productivity increases achieved over the past several years, we believe that this facility is capable of doubling its current output without additional direct labor or capital expenditure, and therefore, that we have ample capacity to meet foreseeable demand in the space and satellite markets.

Suppliers

We generally purchase components and materials, such as carbon powder, electronic components, dielectric materials and metal enclosures from a number of suppliers. For certain products, such as our radiation-mitigated microelectronic products and our high-voltage capacitors, we rely on a limited number of suppliers or a single supplier. Although we believe there are alternative sources for some of the components and materials that we currently obtain from a single source, there can be no assurance that we will be able to identify and qualify alternative suppliers in a timely manner. Therefore, in critical component areas, we “bank,” or store, critical high value materials, especially silicon die. We are working to reduce our dependence on sole and limited source suppliers through an extensive global sourcing effort.

Marketing and Sales

We market and sell our products through both direct and indirect sales organizations in North America, Europe and Asia for integration by OEM customers into a wide range of end products. Because the introduction of products based on emerging technologies requires customer acceptance of new and unfamiliar technical approaches, and because many OEM customers have rigorous vendor qualification processes, the initial sale of our products often takes months or even years.

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Our principal marketing strategy is to cultivate long-term relationships by becoming a preferred vendor and competing for multiple supply opportunities with our key OEM customers. As these design-in sales tend to be technical and engineering-intensive, we organize customer-specific teams composed of sales, engineering, research and development and other technical and operational personnel to work closely with our customers across multiple disciplines to satisfy their requirements for form, fit, function and environmental needs. As time-to-market often is a primary motivation for our customers to use our products, the initial sale and design-in process typically evolves into ongoing account management to ensure on-time delivery, responsive technical support and problem-solving.

Because of the distinct nature of each of our product lines, we conduct discrete marketing programs intended to position and promote each product line. These include trade shows, seminars, advertising, product publicity, distribution of product literature and Internet websites. We employ marketing communications specialists and outside consultants to develop and implement our marketing programs, design and develop marketing materials, negotiate advertising media purchases, write and place product press releases and manage our marketing websites.

We have an alliance with YEC to manufacture and market our proprietary small cell BOOSTCAP^® ultracapacitor products in China. In addition, we sell electrode material to YEC for incorporation into its own ultracapacitor products, and have agreed to sell electrode material to Shanghai Sanjiu Electric Equipment Company, which has licensed our large cell technology and intends to introduce its own brand of ultracapacitor products in China in 2007.

Competition

Each of our product lines has competitors, many of whom have longer operating histories, significantly greater financial, technical, marketing and other resources, greater name recognition and larger installed customer bases than we have. In some of the target markets for our emerging technologies, we face competition both from products utilizing well-established, existing technologies and other novel or emerging technologies.

Ultracapacitors

Our ultracapacitor products have two types of competitors: other ultracapacitor suppliers and purveyors of energy storage and power delivery solutions based on other technologies. Although a number of companies are developing ultracapacitor technology, our principal competitor in the supply of ultracapacitor or supercapacitor products is Panasonic, a division of Matsushita Electric Industrial Co., Ltd. In the supply of ultracapacitor electrode material to other ultracapacitor manufacturers, our primary competitor is W.L. Gore & Associates, Inc. The key competitive factors in the ultracapacitor industry are price, performance (energy stored and power delivered per unit volume), durability and reliability, operational lifetime and overall breadth of product offerings. We believe that our ultracapacitor products and electrode material compete favorably with respect to all of these competitive factors.

Ultracapacitors also compete with products based on other technologies, including advanced batteries in power quality and peak power applications, and flywheels, thermal storage and batteries in back-up energy storage applications. We believe that ultracapacitors’ high durability, long life, high performance and value proposition give them a competitive advantage over these alternative choices in many applications. In addition, integration of ultracapacitors with some of these competing products may provide optimized solutions that neither product can provide by itself. For example, combined solutions incorporating ultracapacitors with batteries for cold starting in diesel trucks have been in development for several years, and efforts currently are underway to standardize such systems.

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High-Voltage Capacitors

Maxwell, through its acquisition in 2002 of Montena (now known as Maxwell Technologies SA) and its CONDIS^® line of high-voltage capacitor products, is the world’s largest producer of high-voltage capacitors for use in electric utility infrastructure. Our principal competitors in the high-voltage capacitor markets are in-house production groups of certain of our customers and other independent manufacturers, such as the Coil Product Division of Trench Limited in Canada and Europe and Hochspannungsgeräte Porz GmbH in Germany. We believe that we compete favorably, both as a consistent supplier of highly reliable high-voltage capacitors, and in terms of our expertise in high-voltage systems design. Over the last ten years, our largest customer, has transitioned from producing its grading and coupling capacitors internally to outsourcing substantially all of its needs to us.

Radiation-Mitigated Microelectronic Products

Our radiation-mitigated power modules, memory modules and single-board computers compete with the products of traditional radiation-hardened integrated circuit suppliers such as Honeywell Corporation, Lockheed Martin Corporation and BAE Systems. We also compete with commercial integrated circuit suppliers with product lines that have inherent radiation tolerance characteristics, such as National Semiconductor Corporation, Analog Devices Inc. and Temic Instruments B.V. in Europe. Our proprietary radiation-mitigation technologies enable us to provide flexible, high function, low-cost, radiation-mitigated products based on the most advanced commercial electronic circuits and processors. In addition, we compete with component product offerings from high reliability packaging houses such as Austin Semiconductor, Inc., White Microelectronics, Inc. and Teledyne Microelectronics, a unit of Teledyne Technologies, Inc.

Research and Development

We maintain active research and development (“R&D”) programs to improve existing products and develop new products. For the year ended December 31, 2006, our research and development expenditures totaled approximately $10.1 million, compared with $7.2 million and $5.5 million in the years ended December 31, 2005 and December 31, 2004, respectively. In general, we focus our research and product development activities on:

Most of our current research, development and engineering activities are focused on material science, including electrically conducting and dielectric materials, ceramics and radiation-tolerant silicon and ceramic composites to reduce cost and improve performance, reliability and ease of manufacture. Additional efforts are focused on product design and manufacturing engineering and manufacturing processes for high-volume manufacturing.

Ultracapacitors

The principal focus of our ultracapacitor development activities is to increase power and energy density, extend operational life and substantially reduce product cost. Our ultracapacitor designs focus on low-cost, high-capacity cells in standard sizes ranging from 4-farads to 3,000-farads, and corresponding multi-cell modules based on those form factors. In 2006 we introduced new Power and Energy families of ultracapacitor products to better match customer performance and cost requirements, with a goal of penetrating price-enabled applications at multi-million unit volumes.

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In 2005, we entered into an ultracapacitor technology research and development contract with the United States Advanced Battery Consortium (USABC). The USABC operates under the auspices of the U.S. Council for Automotive Research, an umbrella organization formed by DaimlerChrysler, Ford and General Motors to strengthen the technology base of the domestic auto industry through cooperative research. Over the term of this program, whose primary goal was development of low-cost, high-performance, ultracapacitor-based energy storage modules for applications in passenger vehicles, Maxwell received a total of approximately $3 million and 616,000 in matching funds from the U.S. Department of Energy in 2005 and 2006 respectively.

High-voltage capacitors

The principal focus of our high-voltage capacitor development efforts is to enhance performance and reliability while reducing the size, weight and manufacturing cost of our products. We also are directing our design efforts to develop high-voltage capacitors for additional applications.

Microelectronic products

The principal focus of our microelectronics product development activities is on circuit design and shielding and other radiation-mitigation techniques that allow the use of powerful commercial silicon components in space and satellite applications that require ultra high reliability. We also focus on creating system solutions that overcome the basic failure mechanisms of individual components through architectural approaches, including redundancy, mitigation and correction. This involves expertise in system architecture, including algorithm and micro-code development, circuit design and the physics of radiation effects on silicon electronic components.

Intellectual Property

We place a strong emphasis on inventing proprietary processes and designs that significantly increase the value and uniqueness of our product portfolio, and on obtaining patents to provide the broadest possible protection for those products and related technologies. Our ultimate success will depend in part on our ability to protect existing patents, secure additional patent protection and develop new processes and designs not covered by the patents of third parties. As of December 31, 2006, Maxwell and its subsidiaries held 47 issued U.S. patents, had 78 U.S. patent applications pending and numerous provisional applications in process. Of the issued patents, 32 relate to our ultracapacitor products and technology and 15 relate to our microelectronics products and technology. Our subsidiary, PurePulse Technologies, Inc. (“PurePulse”), which suspended operations in 2002, holds 29 issued U.S. patents and has five pending U.S. patent applications. Our issued patents have various expiration dates ranging from 2010 to 2025.

Our pending patent applications and any future patent applications may not be allowed. We routinely seek to protect our new developments and technologies by applying for U.S. patents and corresponding foreign patents in the principal countries of Europe and Asia. At present, with the exception of microcode architectures within our radiation-mitigated microelectronics product line, we do not rely on licenses from any third parties to produce or commercialize our products.

Our existing patent portfolios and pending patent applications covering technologies associated with our ultracapacitor and microelectronic products relate primarily to:

Ultracapacitors

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Microelectronics

Historically, our high-voltage capacitor products have been based on our know-how and trade secrets rather than on patents. We filed our first patent application covering our high-voltage capacitor technology in 2003, and we will continue to pursue patent protection in addition to trade secret protection of certain aspects of our products’ design and production.

Establishing and protecting proprietary products and technologies is a key element of our strategy. Although we attempt to protect our intellectual property rights through patents, trademarks, copyrights, trade secrets and other measures, there can be no assurance that these steps will be adequate to prevent infringement, misappropriation or other misuse by third parties, or will be adequate under the laws of some foreign countries, which may not protect our intellectual property rights to the same extent as do the laws of the U.S.

We use employee and third party confidentiality and nondisclosure agreements to protect our trade secrets and unpatented know-how. We require each of our employees to enter into a proprietary rights and nondisclosure agreement in which the employee agrees to maintain the confidentiality of all our proprietary information and, subject to certain exceptions, to assign to us all rights in any proprietary information or technology made or contributed by the employee during his or her employment with us. In addition, we regularly enter into nondisclosure agreements with third parties, such as potential product development partners and customers.

Financial Information About Geographic Areas

Risks Attendant to Foreign Operations and Dependence

We derive a significant portion of our revenues from sales to customers located outside the U.S. We expect our international sales to continue to represent a significant and increasing portion of our future revenues. As a result, our business will continue to be subject to certain risks, such as foreign government regulations, export

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controls, changes in tax laws, tax treaties, tariffs, freight rates and timely and accurate financial reporting from our international subsidiary. Additionally, as a result of our extensive international operations and significant revenue generated outside the U.S., the dollar amount of our current and future revenues, expenses and debt may be materially affected by fluctuations in foreign currency exchange rates. If we are unable to manage these risks effectively, it could impair our ability to increase international sales.

Similarly, assets or liabilities of our consolidated foreign subsidiary that are not denominated in its functional currency are subject to effects of currency fluctuations, which may affect our reported earnings.

We have substantial operations in Switzerland. Having substantial international operations increases the difficulty of managing our financial reporting and internal controls and procedures. In addition, to the extent we are unable to respond effectively to political, economic and other conditions in the countries where we operate and do business, our results of operations and financial condition could be materially adversely affected. Moreover, changes in the mix of income from our foreign subsidiaries, expiration of tax holidays and changes in tax laws and regulations could increase our tax expense.

Backlog

Backlog for continuing operations for the year ended December 31, 2006 was approximately $6.7 million, compared with $12.4 million as of December 31, 2005. Backlog consists of firm orders for products that will be delivered within 12 months. Because we have dramatically reduced production cycle times, our customers are less likely to commit firm purchase orders as far in advance of their production needs as they did in the past.

Significant Customers

Sales to one customer amounted to approximately $9.7 million, or 18%, and $10.6 million, or 23%, of our total revenue for years ended December 31, 2006 and 2005, respectively.

Government Regulation

Due to the nature of our operations and the use of hazardous substances in some of our ongoing manufacturing and research and development activities, we are subject to stringent federal, state and local laws, rules, regulations and policies governing workplace safety and environmental protection. These include the use, generation, manufacture, storage, air emission, effluent discharge, handling and disposal of certain materials and wastes. In the course of our historical operations, materials or wastes may have spilled or been released from properties owned or leased by us or on or under other locations where these materials and wastes have been taken for disposal. These properties and the materials and wastes spilled, released, or disposed thereon are subject to environmental laws that may impose strict liability, without regard to fault or the legality of the original conduct, for remediation of contamination resulting from such releases. Under such laws and regulations, we could be required to remediate previously spilled, released, or disposed substances or wastes, or to make capital improvements to prevent future contamination. Failure to comply with such laws and regulations also could result in the assessment of substantial administrative, civil and criminal penalties and even the issuance of injunctions restricting or prohibiting our activities. It is also possible that implementation of stricter environmental laws and regulations in the future could result in additional costs or liabilities to us as well as the industry in general. While we believe we are in substantial compliance with existing environmental laws and regulations, we cannot be certain that we will not incur substantial costs in the future.

In addition, certain of our microelectronics products are subject to International Traffic in Arms export regulations when they are sold to customers outside the U.S. We routinely obtain export licenses for such product shipments outside the U.S.

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Employees

As of December 31, 2006, we had 377 employees, consisting of 155 full-time, 2 part-time employee and 54 temporary employees in the U.S., and 123 full-time, 3 part-time and 40 temporary employees in Switzerland. We believe that approximately 30 percent of our employees in Switzerland are members of a labor union. Swiss law prohibits employers from inquiring into the union status of employees. We consider our relations with our employees to be good.

Available Information

We file or furnish annual, quarterly and special reports, proxy statements and other information with the Securities and Exchange Commission (SEC). Our SEC filings are available free of charge to the public over the Internet at the SEC’s website at http://www.sec.gov. Our SEC filings are also available free of charge on our website at http://www.maxwell.com as soon as reasonably practicable following the time that they are filed with or furnished to the SEC. You may also read and copy any document we file with or furnish to the SEC at the SEC’s Public Reference Room at 450 Fifth Street, NW, Washington, DC 20549. You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The information found on our website is not part of this or any report that we file or furnish to the SEC.

Facilities

Our San Diego headquarters and principal research, manufacturing and marketing facility occupies approximately 45,000 square feet under a renewable lease that expires in July 2010. We also occupy a 16,500-square-foot production annex in San Diego under a renewable lease that expires in November 2010. In addition, we lease research, manufacturing and marketing facilities occupying 68,620 square feet in Rossens, Switzerland, under a renewable lease that expires in June 2009. We believe that we have sufficient floor space to support forecasted increases in production volume and, therefore, that our facilities are adequate to meet our needs for the foreseeable future.

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Item 1A. Risk Factors

An investment in our common stock involves a high degree of risk. Our business, financial condition and results of operations could be seriously harmed if potentially adverse developments, some of which are described below, materialize and cannot be resolved successfully. In any such case, the market price of our common stock could decline and you may lose all or part of your investment in our common stock.

The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties, including those not presently known to us or that we currently deem immaterial, may also result in decreased revenues, increased expenses or other adverse impacts that could result in a decline in the price of our common stock. You should also refer to the other information set forth in this Annual Report on Form 10-K, including our consolidated financial statements and the related notes.

We have a history of losses and we may not achieve or maintain profitability in the future, which may decrease the market value of our common stock.

We have incurred net losses in our last eight fiscal years. We cannot assure you that we will become profitable in the foreseeable future, if ever. Even if we do achieve profitability, we may experience significant fluctuations in our revenues and we may incur net losses from period to period as a result of a number of factors, including but not limited to the following:

In addition, we incur significant costs developing and marketing products based on new technologies and, in order to increase our market share, we have sold, and may in the future sell, our products at profit margins below those we ultimately expect to achieve. We have in the past, and may in the future, make a strategic decision to accept certain orders to sell products to a limited number of customers at prices below our manufacturing costs. The impact of the foregoing may cause our operating results to be below the expectations of securities analysts and investors, which may result in a decrease in the market value of our common stock.

We face risks selling products internationally which are or may become regulated by the US Government.

Our radiation shielded products are being classified as International Traffic in Arms Regulations (ITAR) which subject them to the licensing jurisdiction of the Department of State in accordance with the International Traffic in Arms Regulations (22 CFR 120 through 130) and are designated a defense article under Category XV(e) of the United States Munitions List. This means that all international sales of our radiation shielded products require licensing which may have the following impact: a) approval of the license may or may not be granted, b) the time between the receipt of an order and shipment of product may be increased, and c) sales could be impacted due to a customers preference of using non-ITAR regulated products. Additionally, we may be subject to new regulations that have a potential to impact sales or our products that we sell internationally or domestically.

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We may enter into agreements and provide services before funding is approved or obtained.

We may provide services for projects before funding for such projects is approved or received. If funds are not received we would not recognize the revenue even though we may incur the expenses. We provide these goods or services knowing that we may not receive compensation. If funding is not eventually obtained, any capitalized expenses or inventory that is unique to the specific customer would be expensed, which could adversely impact our consolidated financial position, results of operations and cash flows.

A small number of customers account for a significant portion of our revenues.

We expect that a small number of customers will continue to account for a large portion of our revenues for the foreseeable future. We have one customer that accounts for more than 10% of our revenue. This customer accounted for approximately 18% of our revenues in 2006. If our relationships with our large customers were disrupted, we could lose a significant portion of our anticipated revenues. Factors that could influence our relationships with our customers include:

Our large cell ultracapacitors designed for transportation and industrial applications may not gain widespread commercial acceptance, which would adversely impact our growth opportunities, and our overall business prospects.

We have designed our large cell ultracapacitor products primarily for use in transportation and industrial applications. Currently, most of the major automotive companies are testing and developing alternative power sources to augment the current 12-volt electrical system or support the power requirements of hybrid drive systems. We believe our ultracapacitors provide an innovative alternative power solution for both of these applications, and we are currently collaborating technically with several automotive suppliers and auto companies regarding designing our ultracapacitors into their future products. However, the historic per unit cost of ultracapacitors has prevented ultracapacitors from gaining widespread commercial acceptance. In addition, there are other competing technologies such as advanced batteries, compressed gas and hydrolytic fluids as well as competing ultracapacitors. We believe that the long-term success of our ultracapacitor products will be determined by our ability to reduce the price of our products and outperform competing technologies, resulting in our ultracapacitors being widely designed into the next generation of hybrid drive systems and the first generation of up-rated 12 and 42-volt electrical systems. If our ultracapacitor products fail to achieve widespread commercial acceptance in the next generation of automotive systems, our future revenues and growth opportunities will be adversely impacted and our overall business prospects will be significantly impaired.

We may be unable to produce our large cell ultracapacitors in commercial quantities or reduce the cost of production enough to be commercially viable for widespread application, which would adversely impact our revenues and growth opportunities and our overall business prospects.

If we are not able to produce large quantities of our large cell ultracapacitor products in the near future at a significantly lower per unit cost, our large cell ultracapacitors may not be a commercially viable alternative to competing energy storage and power delivery solutions. Although we have been selling BOOSTCAP^® large cell ultracapacitors designed for transportation and industrial applications, we have only produced these products in limited quantities and at relatively high prices compared with traditional energy storage and power delivery devices. We are currently investing significant resources in improving our ultracapacitor cell and multi-cell module designs for higher performance and lower cost, and in automating and scaling up our manufacturing

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capacity to enable us to produce ultracapacitors in quantities sufficient to meet the needs of our potential customers. If we are unable to continue reducing our cost of production and establishing the capability to produce large quantities of ultracapacitors at a reduced cost, we may not be able to generate commercial acceptance of, and sufficient revenue from, these products to recover our significant investment in the development and manufacturing scale-up, and our overall business prospects will be significantly impaired.

It may also be difficult for us to solve management, technological, engineering and other problems, which may arise in connection with scaling up our manufacturing processes. These problems may include production volumes and yields, quality assurance, adequate and timely supply of materials and components and shortages of qualified management and other personnel. In addition, we plan to have some of our products manufactured by third parties. If we outsource the manufacture of our products, we will face risks with respect to quality assurance, cost and the absence of close engineering support.

We may not be able to develop and market our products successfully, and thus may not be able to achieve or maintain profitability in the future.

If we are unable to develop and market our products successfully, we may not achieve or maintain profitability. In recent years, we have introduced many of our products into commercial markets and, upon such introductions, we also must demonstrate our capabilities as a reliable supplier of these products. Some of our products are alternatives to established products or provide capabilities that do not presently exist in the marketplace. Our products are sold in highly competitive and rapidly changing markets. Our products’ success is significantly affected by their cost, technology standards, performance and reliability and end-user preferences. The success of our products also depends on a number of factors, including our ability to:

If we are unable to secure qualified and adequate sources for our materials, components and sub-assemblies, we may not be able to make our products at competitive costs and we may have difficulty meeting customer demand, which could damage our relationships with our customers.

Our ability to manufacture products depends in part on our ability to secure qualified and adequate sources of materials, components and sub-assemblies at prices that enable us to make our products at competitive costs. Some of our suppliers are currently the sole source of one or more items that we need to manufacture our products. Although we seek to reduce our dependence on sole and limited source suppliers, the partial or complete loss of these sources could have at least a temporary adverse effect on our business and results of operations and damage customer relationships. Upon occasion, we have experienced difficulty in obtaining timely delivery of supplies from outside suppliers, which has delayed deliveries to our customers. There can be no assurance that such supply problems will not recur.

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Our product lines may be subject to increased competition, and this may limit our ability to increase or maintain our gross margins. If our competitors develop and commercialize products faster than we do, or commercialize products that are superior to or lower cost than our products, our commercial opportunities may be reduced or eliminated.

Market acceptance of our products will depend on competitive factors, many of which are beyond our control. Competition in our markets is intense and has been accentuated by the rapid pace of technological development. Our competitors include large fully-integrated electronics companies. We may not be able to develop, fund or invest in one or more of our product lines to the same degree or as quickly as our competitors do. Many of our competitors have substantially greater research and development capabilities and financial, manufacturing, technological, marketing and sales resources than we do, as well as more experience in research and development, product testing, manufacturing, marketing and sales. These organizations also compete with us to:

Our competitors may succeed in developing and commercializing products earlier than we do. Our competitors may also develop products or technologies that are superior to or lower cost than ours, and render our product candidates or technology obsolete or non-competitive. If we cannot successfully compete with new or existing products, our sales and revenue would suffer and we may not ever become profitable.

If our OEM customers fail to purchase our components or to sell sufficient quantities of their products incorporating our components, or if our OEM customers’ sales timing and volume fluctuates, it could prevent us from achieving our sales and market share goals.

Sales to a relatively small number of OEM customers, as opposed to direct retail sales to end customers, make up a large portion of our revenues. For example, we have one customer accounted for more than 10% of our revenue, this client accounted for approximately 18% of our revenues in 2006. Our ability to make sales to OEM customers depends on our ability to compete on price, delivery and quality. The timing and volume of these sales depend upon the sales levels and shipping schedules for the products of our OEM customers. Thus, even if we develop a successful component, our sales will not increase unless the product into which our component is incorporated is successful. If our OEM customers fail to sell a sufficient quantity of products incorporating our components, or if the OEM customers’ sales timing and volume fluctuate, it could prevent us from achieving our sales targets and negatively impact our market share. Our OEM customers typically require a long development and engineering process before incorporating our products into their systems and products. This period of time is in addition to the time we spend on basic research and product development. As a result, we are vulnerable to changes in technology or end user preferences.

Our opportunity to sell our products to our OEM customers typically occurs at infrequent intervals, depending on when the OEM customer designs a new product or enhances an existing one. If we are not aware of an OEM’s product development schedule, or if we cannot provide components or technologies when they develop their products, we may miss a sales opportunity that may not reappear for some time.

We may face product liability or warranty claims, either directly or indirectly through our customers, and we have limited experience with some of our products as to our potential liability.

We offer our customers a warranty for our products. Any product defects could, in turn, lead to defects in our customers’ products that incorporate our products. Defects in our products could give rise to warranty claims against us or to liability for damages. Such defects could also lead to liability for consequential damages. Defects in our products could, moreover, impair the market’s acceptance of our products. Any of these events could have a material adverse effect on our business and financial condition. We have limited experience with some of our

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products in evaluating the potential liability that could be created by claims under our warranties. If the claims made under such warranties exceed our warranty reserves, our results of operations and financial condition could be materially adversely affected. Additionally, warranty periods in some foreign countries are mandated by law. Changes in such laws may affect the adequacy of our warranty reserves.

Unfavorable economic conditions in the U.S. and abroad may adversely affect our OEM customers and prevent us from achieving sales growth.

Many of our new products are components designed to be integrated into new products and systems to be introduced to the marketplace by our OEM customers. For example, unfavorable economic conditions in 2003 and 2004 resulted in reduced capital spending on U.S. electric utility infrastructure and delayed the introduction of certain new products by our OEM customers. A recurrence of such unfavorable economic conditions may adversely affect our ability to market and sell our new products in the future.

A prolonged economic downturn could materially harm our business.

Any negative trends in the general economy, including trends resulting from actual or threatened military action by the United States and threats of terrorist attacks in the United States and abroad, could cause a decrease in capital spending in many of the markets we serve. In particular, a downward cycle affecting the technology, automotive and industrial, and military and aerospace markets would likely result in a reduction in demand for our products. In addition, if our customers’ own markets and financial performance decline, we may not be able to collect outstanding amounts due to us. Any such circumstances could harm our consolidated financial position, results of operations and cash flows.

If we are unable to protect our intellectual property adequately, such as in the Peoples Republic of China (PRC), we could lose our competitive advantage in the industry segments in which we do business.

Our success depends in part on establishing and protecting our intellectual property rights. If we are unable to protect our intellectual property adequately, we could lose our competitive advantage in the industry segments in which we do business. Although we protect our intellectual property rights through patents, trademarks, copyrights, trade secrets and other measures, these steps may not prevent infringement, misappropriation or other misuse by third parties. We have taken steps to protect our intellectual property rights under the laws of certain foreign countries, but our efforts may not be effective to the extent that foreign laws are not as protective as the laws of the U.S. For example, we have licensed the rights to manufacture and market our patented ultracapacitor technology in the PRC to a company located in the PRC. Patent and other intellectual property rights receive substantially less protections in the PRC than is available in the United States. In addition, we face the possibility that third parties may “reverse engineer” our products to discover how they work and introduce competing products, or that third parties might independently develop products and intellectual property similar to ours.

We have increased our emphasis on protecting our technologies and products through patents. Our success depends on maintaining our patents, adding to them where appropriate, and developing products and applications without infringing the patent and proprietary rights of others. The following risks, among others, are involved in protecting our patents:

If our patents are invalidated or if it is determined that we, or the licensor of the patent, do not hold sole rights to the patent, we could lose our competitive advantage in the industry segments in which we do business.

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Competing research and patent activity in our product areas is substantial. Conflicting patent and other proprietary rights claims may result in disputes or litigation. Although we do not believe that our products or proprietary rights infringe third parties’ rights, infringement claims could be asserted against us in the future. Also, we may not be able to stop a third party product from infringing our proprietary rights without litigation. If we are forced to bring such claims or are subject to such claims by others, we could face time-consuming, costly litigation that may result in product shipment delays, damage payments or injunctions that could prevent us from making, using or selling infringing products. In addition, such litigation could increase our operating expenses and adversely impact our operating results. We may also be required to enter into royalty or licensing agreements on unfavorable terms as part of a judgment or settlement, which could negatively impact the amount of revenue derived from our products or proprietary rights.

Our reputation and ability to enter into alliances or other strategic arrangements may affect our success.

Our reputation is important to our growth and success. Since we anticipate licensing our technology to others, our reputation may be affected by the performance of the companies to which we license our technology. Our licenses may grant exclusivity with respect to certain uses or geographic areas. For example, we have granted licenses to YEC and Shanghai Sanjiu to manufacture and sell products based on our proprietary ultracapacitor designs in China. As a result, we will be dependent in part on the success of these licensees for success in China. We anticipate that future alliances may also be with foreign partners or entities. As a result, such future alliances may be subject to the political climate and economies of the foreign countries where such partners reside and operate. We cannot be certain that our alliance partners or other partners will provide us with the support we anticipate, that such alliances or other relationships will be successful in developing our technology for use with their intended products, or that any alliances or other relationships will be successful in manufacturing and marketing their products. Any of our international operations will also be subject to certain external business risks such as exchange rate fluctuations, political instability or significant weakening of a local economy in which a foreign entity with which we have an affiliation operates or is located. Certain provisions of alliance agreements that are for our benefit may be subject to restrictions in foreign laws that limit our ability to enforce such contractual provisions. If these alliances are not successful our business and prospects could be negatively affected.

We face risks associated with marketing, distribution and sale of our products internationally and, if we are unable to manage these risks effectively, it could impair our ability to increase sales.

We derive a significant portion of our revenues from sales to customers located outside the U.S. We expect our international sales to continue to represent a significant and increasing portion of our future revenues. As a result, our business will continue to be subject to certain risks, such as foreign government regulations, export controls, changes in tax laws, tax treaties, tariffs, freight rates and timely and accurate financial reporting from our international subsidiary.

Additionally, as a result of our extensive international operations and significant revenue generated outside the U.S., the dollar amount of our current and future revenues, expenses and debt may be materially affected by fluctuations in foreign currency exchange rates. If we are unable to manage these risks effectively, it could impair our ability to increase international sales.

Similarly, assets or liabilities of our consolidated foreign subsidiary that are not denominated in its functional currency are subject to effects of currency fluctuations, which may affect our reported earnings.

We have substantial operations in Switzerland. Having substantial international operations increases the difficulty of managing our financial reporting and internal controls and procedures. In addition, to the extent we are unable to respond effectively to political, economic and other conditions in the countries where we operate and do business, our results of operations and financial condition could be materially adversely affected. Moreover, changes in the mix of income from our foreign subsidiaries, expiration of tax holidays and changes in tax laws and regulations could increase our tax expense.

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We could be subject to future audits by the Defense Department which could result in charges to our earnings and have a negative effect on our cash position.

We enter into contracts that are subject to audits and the out come of an audit may have a negative impact of financial results.

If we are unable to retain key personnel, we could lose our technological and competitive advantage in some product areas and business segments.

Since many of our products employ emerging technologies, our success depends upon the continued service of our key technical and senior management personnel. Some of our scientists and engineers are the key developers of our products and technologies and are recognized as leaders in their area of expertise. The loss of such personnel could threaten our technological and competitive advantage in some product areas and product lines.

Our performance also depends on our ability to identify, hire, train, retain and motivate qualified personnel, especially key executives, operations staff and highly skilled engineers. The industries in which we compete are characterized by a high level of employee mobility and aggressive recruiting of skilled personnel in a highly competitive employment market. All of our employees are “at will” and thus may terminate their employment with us at any time.

Our ability to increase market share and sales depends on our ability to hire, train and retain qualified marketing and sales personnel.

Because many of our products are new, we have limited experience marketing and selling them. To sell our products, our marketing and sales personnel must demonstrate the advantages of our products over competing products, and we must be able to demonstrate the value of new technology in order to sell new products to existing and new customers. The highly technical nature of the products we offer requires that we attract and retain qualified marketing and sales personnel, and we may have difficulty doing that in a highly competitive employment market. Also, as part of our sales and marketing strategy, we enter into arrangements with distributors and sales representatives to sell our products, and it is possible that our arrangements with outside distributors and sales representatives may not be successful.

Our business and operations would suffer in the event of system failures.

Despite the implementation of security measures, redundancy and backup, our internal information technology networking systems are vulnerable to damages from computer viruses, unauthorized access, energy blackouts, natural disasters, terrorism, war and telecommunication failures. Additionally, from time to time, we install new or upgraded business management systems. To the extent such systems fail or are not properly implemented, we may experience material disruption to our business, including our ability to report operating results on a timely basis.

Accounting rules for stock-based compensation may adversely affect our operating results, our stock price and our competitiveness in the employee marketplace.

We have a history of using employee stock options and other stock-based compensation to hire, motivate and retain our workforce. In December 2004, the Financial Accounting Standards Board issued Statement of Financial Accounting Standards No. 123R, “Share-Based Payment,” which has required us, starting in the first quarter of fiscal year 2006, to measure compensation costs for all stock-based compensation (including stock options and our employee stock purchase plan) at fair value and to recognize these costs as expenses in our statements of operations. The recognition of these expenses in our statements of operations will result in lower earnings per share, which could negatively impact our future stock price. In addition, if we reduce our stock-based compensation to minimize the recognition of these expenses, our ability to recruit, motivate and retain employees may be impaired, which could put us at a competitive disadvantage in the employee marketplace.

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Compliance with changing regulations of corporate governance and public disclosure may result in additional expenses.

Changing laws, regulations and standards relating to corporate governance and public disclosure, including the Sarbanes-Oxley Act of 2002, new SEC regulations and NASDAQ National Market rules, have created significant additional expenses for public companies. We are committed to maintaining high standards of corporate governance and public disclosure. As a result, our efforts to comply with evolving laws, regulations and standards have resulted in, and are likely to continue to result in, significantly increased general and administrative expenses and diversion of management time to such compliance activities. Our recent efforts to comply with section 404 of the Sarbanes-Oxley Act of 2002 and the related regulations have required significant effort and resources, and resulted in significant cost to us. These efforts and expense are increased because of our substantial international operations.

Anti-takeover provisions in our certificate of incorporation and bylaws could prevent certain transactions and could make a takeover more difficult.

Some provisions in our certificate of incorporation and bylaws could make it more difficult for a third party to acquire control of us, even if such change in control would be beneficial to our stockholders. We have a classified board of directors, which means that our directors are divided into three classes that are elected to three-year terms on a staggered basis. Since the three year terms of each class overlap the terms of the other classes of directors, the entire board of directors cannot be replaced in any one year. Furthermore, our certificate of incorporation contains a “fair price provision” which may require a potential acquirer to obtain the consent of our board to any business combination involving us.

We have adopted a program under which our stockholders have rights to purchase our stock directly from us at a below-market price if a company or person attempts to buy us without negotiating with the board. This program is intended to encourage a buyer to negotiate with us, but may have the effect of discouraging offers from possible buyers.

The provisions of our certificate of incorporation and bylaws could delay, deter or prevent a merger, tender offer, or other business combination or change in control involving us that stockholders might consider to be in their best interests. This includes offers or attempted takeovers that could result in our stockholders receiving a premium over the market price for their shares of our common stock.

Our common stock experiences limited trading volume and our stock price has been volatile.

Our common stock is traded on the NASDAQ National Market. The trading volume of our common stock each day is relatively low. This means that sales or purchases of relatively small blocks of stock can have a significant impact on the price at which our stock is traded. We believe that factors such as quarterly fluctuations in financial results, announcements of new technologies impacting our products, announcements by competitors or changes in securities analysts’ recommendations could cause the price of our stock to fluctuate substantially. These fluctuations, as well as general economic conditions such as recessions or higher interest rates, may adversely affect the market price of our common stock.

We may experience difficulty manufacturing our products, which would prevent us from achieving increased sales and market share.

We may experience difficulty in manufacturing our products in increased quantities, outsourcing the manufacturing of our products and improving our manufacturing processes. If we are unable to manufacture our products in increased quantities, or if we are unable to outsource the manufacturing of our products or improve our manufacturing processes, we may be unable to increase sales and market share for our products and could also lose existing customers. We have limited experience in manufacturing our products in high volume and, therefore, it may be difficult for us to achieve the following results:

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It may also be difficult for us to solve management, technological, engineering and other problems, which may arise in connection with our manufacturing processes. These problems may include production volumes and yields, quality assurance, adequate and timely supply of high quality materials and components and shortages of qualified management and other personnel. In addition, we may elect to have some of our products manufactured by third parties. If we outsource the manufacture of our products, we will face risks with respect to quality assurance, cost and the absence of close engineering support.

If the investors in our December 2005 financing convert their notes or exercise their warrants, it will have a dilutive effect upon our stockholders.

In December 2005 we issued notes and warrants to an institutional investor. Pursuant to the terms of the notes, the holders of such notes may convert the notes into shares of common stock at any time prior to their maturity at the Conversion Price, subject to adjustment upon specified events, including a price-based weighted average anti-dilution provision, and further subject to adjustment for stock splits, combinations or similar events specified in the notes. Subject to certain conditions, we can automatically convert the notes into common stock of the Company at the Conversion Price. Unless our shares of common stock trade at or above a weighted-average price of 115% of the then effective Conversion Price, we will be obligated to repay equal portions of the principal amount outstanding under the notes on a quarterly basis beginning two (2) years after the date of original issuance, provided that any holder may defer the receipt of any such payment for a period of up to two (2) years. As part of the transaction, we also issued to such investors warrants to purchase up to an additional 394,737 shares of our common stock at the Conversion Price, subject to anti-dilution provisions similar to the provisions set forth in the notes, and further subject to adjustment for stock splits, combinations or similar events. The warrants are exercisable immediately after the closing date of the private placement and expire five (5) years from the date of issuance. If the investor converts the notes or exercises the warrants, we will issue shares of our common stock and such issuances will be dilutive to our stockholders. Because the Conversion Price may be adjusted from time to time in accordance with the provisions of the notes and the warrants, the number of shares that could actually be issued may be greater than the amount described above. In addition, if such institutional investors or our other stockholders sell substantial amounts of our common stock in the public market during a short period of time, our stock price may decline significantly. Lastly, we have an obligation to file a registration on Form S-3 to cover the resale of the shares underlying the notes and warrants. We are subject to financial penalties for failure to file the registration statement and have it declared effective by the SEC.

We substantially increased our outstanding indebtedness with the issuance of certain subordinated convertible notes and we may not be able to pay our debt and other obligations.

In December 2005 we issued notes in the aggregate principal amount of $25 million in a private placement to an institutional investor. The notes accrue interest at a per annum rate equal to the Federal Funds Rate (as defined in the notes) plus 1.125%, subject to adjustment, with accrued interest payable quarterly. By issuing the notes we increased our indebtedness substantially. In addition, the holders of the notes have imposed certain restrictive covenants, including limits on our future indebtedness and limits on our ability to incur future liens and make certain restricted payments. Upon a change of control (as defined in the notes), the holders of the notes will have certain redemption rights. An event of default would occur under the notes for a number of reasons, including our failure to pay when due any principal, interest or late charges on the notes, certain defaults on our indebtedness, certain events of bankruptcy and our breach or failure to perform certain representations and obligations under the notes. Upon the occurrence of an event of default, our obligations under the notes may become due and payable in accordance with the terms thereof.

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As a result, the issuance of the notes may or will:

If we are unable to satisfy our payment obligations under the notes or otherwise are obliged to repay the notes prior to the due date, we could default on such notes, in which case our available cash could be depleted, perhaps seriously, and our ability to fund operations could be materially harmed.

Our credit agreements contain various restrictions and covenants that limit management’s discretion in the operation of our business and could limit our ability to grow and compete.

The credit agreements governing our bank credit facilities contain various provisions that limit our ability to:

These provisions restrict management’s ability to operate our business in accordance with management’s discretion and could limit our ability to grow and compete. Our credit agreements also require us to maintain our compliance with certain financial covenants and ratios. If we fail to comply with any of such financial covenants or ratios, or otherwise default under our credit agreements, the lenders under such agreements could:

In the event that amounts due under our credit agreements are declared immediately payable, we may not have, or be able to obtain, sufficient funds to make such accelerated payments.

We may not be able to obtain sufficient capital to meet potential customer demand or corporate needs, which could require us to change our business strategy and result in decreased profitability and a loss of customers.

We believe that in the future we will need a substantial amount of additional capital for a number of purposes, including the following:

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In December 2005, we raised approximately $23.7 million (net of offering expenses) through a private placement of convertible debentures and warrants to purchase shares of our common stock. In July 2005, we raised approximately $5.4 million (net of offering expenses) through the sale of our common stock pursuant to a shelf registration statement on Form S-3. However there can be no assurance that additional financing will be available to us on acceptable terms or at all. If adequate funds are not available when needed, we may be required to change or delay our planned growth, which could result in decreased revenues, profits and a loss of customers. The issuance of additional shares will result in dilution of our current stockholders. Further, if additional financing is accomplished by the issuance of debt, the service cost, or interest, will reduce net income or increase net losses and may also require the issuance of additional warrants to purchase shares of common stock.

The issuance of shares of our common stock could result in the loss of our ability to use our net operating losses.

As of December 31, 2006, we had approximately $184.7 million of federal tax and state tax net operating loss carryforwards. Realization of any benefit from our tax net operating losses is dependent on: 1) our ability to generate future taxable income and 2) the absence of certain future “ownership changes” of our common stock. An “ownership change,” as defined in the applicable federal income tax rules, would place significant limitations, on an annual basis, on the use of such net operating losses to offset any future taxable income we may generate. Such limitations, in conjunction with the net operating loss expiration provisions, could effectively eliminate our ability to use a substantial portion of our net operating losses to offset any future taxable income. The issuance of shares of our commons stock could cause an “ownership change.” Such transactions include the issuance of shares of common stock upon future conversion or exercise of outstanding options, warrants and convertible preferred stock.

The costs of litigation or third-party claims of intellectual property infringement may be significant and may negatively impact our operating results.

The company will defend its intellectual property and in doing so we may incur significant costs in our defense. We have in the past, and may in the future, make a strategic decision to file lawsuits against companies that we believe are utilizing our intellectual property without permission by the company. The costs could be substantial and if we do not prevail in our defense it may result in a decrease in the market value of our common stock. Also, the amount spent on our defense may be greater than the judgment that we might receive, which could have a negative impact on our operating capital.

Item 1B. Unresolved Staff Comments

None.

Item 2. Properties

We have ongoing operations in San Diego, California and Rossens, Switzerland. In San Diego, we currently lease approximately 45,000 square feet of administrative, research and development, manufacturing and sales space. The San Diego lease expires in July 2010. We also occupy a 16,500-square-foot production annex in San Diego under a renewable lease that expires in November 2010. In Rossens, we currently lease approximately 68,620 square feet of manufacturing, sales and administrative space. The Rossens lease expires in June 2009.

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Item 3. Legal Proceedings

In October 2006, Maxwell filed a patent infringement lawsuit against Nesscap in the United States District Court for the Southern District of California alleging that Nesscap’s sales of its ultracapacitors in the United States violate Maxwell patent(s). Maxwell is seeking monetary damages and an injunction to stop Nesscap’s sales of infringing products.

In December 2006, Nesscap filed a lawsuit against Maxwell in United States District Court for the District of Delaware in Wilmington Delaware claiming Maxwell has infringed on NessCap’s patented intellectual property. We consider this a counter suit by Nesscap and it does not have merit. We will continue to defend our proprietary intellectual property.

We were named as a defendant in a suit filed on March 4, 2004 in the Superior Court of the State of California for the County of San Luis Obispo. This suit, Edmonds vs. I-Bus/Phoenix, Inc., was filed by the plaintiff on his behalf and allege damages concerning the repurchase of I-Bus/Phoenix, Inc. shares. On September 12, 2006 a California jury ruled in favor of the plaintiff for the amount of $231,000. The Company paid $435,000 to settle the lawsuit. The payment included interest on the judgment and the expense is included in discontinued operations.

Item 4. Submission of Matters to a Vote of Security Holders

No matters were submitted to stockholders during the fourth quarter of the fiscal year covered by this report.

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PART II

Our common stock has been quoted on the Nasdaq National Market under the symbol “MXWL” since 1983. The following table sets forth the high and low sale prices per share of our common stock as reported on the Nasdaq National Market for the periods indicated.

As of March 9, 2007, there were 417 holders of record of our common stock. We believe that the number of beneficial owners of our common stock substantially exceeds this number.

Dividend Policy

We have never declared or paid cash dividends on our capital stock. We currently anticipate that any earnings will be retained for the development and expansion of our business and, therefore, we do not anticipate paying cash dividends on our capital stock in the foreseeable future. In addition, under our bank credit and convertible debt agreements, neither we nor any of our subsidiaries may, directly or indirectly, pay any cash dividends to our stockholders.

Recent Sales of Unregistered Securities

None.

Equity Compensation Plans

The information required by this item will be contained in our definitive proxy statement to be filed with the Securities and Exchange Commission in connections with the Annual Meeting of our Stockholders, which is expected to be filed not later than 120 days after the end of our fiscal year ended December 31, 2006 (the “Proxy Statement”), and is incorporated in this report by reference.

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Stock Performance Graph

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Item 6. Selected Financial Data

The selected consolidated financial data presented below are for each fiscal year in the five-year period ended December 31, 2006. This data is derived from the Company’s audited consolidated financial statements. During the year ended December 31, 2004, we completed the discontinuance of our Winding Equipment business segment, which we acquired in 2002. Therefore, the financial statements for fiscal 2004, 2003 and 2002 include the reclassification of the Winding Equipment business to discontinued operations. The adoption of SFAS No. 87 on January 1, 2003 resulted in a cumulative effect on an accounting change, net of tax of $878,000.

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion of our financial condition and results of operations for the years ended December 31, 2006, 2005 and 2004 should be read in conjunction with our consolidated financial statements and the related notes included elsewhere in this Annual Report. In addition, the discussion and the historical information contain forward-looking statements that are subject to risks and uncertainties, including estimates based on our judgment in determining the allowance for inventory and warranty reserves, bad debt allowance, allowance for deferred tax assets and tax expenses in the future. Our estimation of liquidity for fiscal year 2007 may be significantly different than our actual results. Negative changes in revenues will affect our estimation in cost of sales, research and development, selling, general and administrative and other aspects of our business.

Executive Summary

We begin Management’s Discussion and Analysis of Financial Condition and Results of Operations with an overview of our business and strategic plan. Subsequently, we provide a summary of some of the highlights from the recently completed fiscal year, followed by a discussion of the different aspects of our business. We then proceed, on page 35, to discuss our results of operations for the year ended December 31, 2006 compared with the year ended December 31, 2005, and for the year ended December 31, 2005 compared with the year ended December 31, 2004. Thereafter, beginning on page 38, we provide an analysis of changes in our balance sheet and cash flows, and discuss our capital requirements and financing activities in the section entitled “Liquidity and Capital Resources.” Beginning on page 42, we discuss our critical accounting policies, the impact of inflation on our business and new accounting pronouncements.

Overview

Maxwell Technologies, Inc. is a Delaware corporation is headquartered in San Diego, California we originally incorporated in 1965 under the name “Maxwell Laboratories, Inc.” In 1996, we changed our name to Maxwell Technologies, Inc. We develop, manufacture and market energy storage and power delivery products for transportation, industrial telecommunications and other applications and microelectronic products for space and satellite applications.

Maxwell operates as one operating segment called High Reliability, which has two manufacturing locations (San Diego, California and Rossens, Switzerland) and is comprised of three product lines:

We aim to design and manufacture our products to perform reliably for the life of the products and systems into which they are integrated. We seek to achieve high reliability through the application of proprietary technologies and rigorously controlled design, development, manufacturing and test processes. This high reliability strategy emphasizes the development and marketing of products that enable us to achieve higher profit margins than commodity electronic components and systems.

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During the year ended December 31, 2004, we completed the discontinuance of our Winding Equipment product line segment, which was sold in December 2003, with the shipment of the final product order that we were obligated to fulfill. Therefore, the financial statements for fiscal 2004, include the Winding Equipment product line segment in discontinued operations.

2006 Highlights

For 2006, we reported revenue of $53.9 million and a net loss of $16.5 million, or $0.98 per diluted share, versus revenue of $45.4 million and a net loss of $6.3 million, or $0.39 per diluted share for fiscal 2005. The higher net loss was a result of the production costs associated with our ramp up and phase in of increased manufacturing capacity within the BOOSTCAP^® product line. We continue to face the challenge of ramping up production and keeping pace with demand while simultaneously achieving anticipated production efficiencies and cost reductions. We expect to continue driving down production costs to meet the pricing requirements of the markets in which we compete. Once these efficiencies are fully achieved we anticipate achieving the manufacturing costs to meet our pricing strategy.

During fiscal 2006, we developed strategic alliances, introduced new products, added capacity to meet future anticipated demand, provided capital improvements, perfected production processes. Some of these efforts are described below:

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RESULTS OF OPERATIONS

Year Ended December 31, 2006 Compared with Year Ended December 31, 2005

Revenue

Revenue for the year ended December 31, 2006 was $53.9 million, compared with $45.4 million for the year ended December 31, 2005. Compared to 2005, total revenue increased $8.5 million, or 19%, from the prior year. Three quarters of the revenue increase came from the BOOSTCAP^® product line, which experienced increased demand for its products as well as license revenue that totaled $1.4 million in 2006. Approximately 30% of the revenue increase came from the High Tension product line. Management expects High Tension revenue to continue to increase in 2007, but at a lower rate than what was experienced in 2006. Microelectronics revenue in 2006 was marginally lower than in 2005. Maxwell expects Microelectronics revenue to grow in 2007 driven by the NPOESS single board computer contract and demand for component products.

Management believes that license revenue will continue in 2007 and we anticipate continued strong demand for BOOSTCAP^® products. While the overall growth prospects for 2007 remain bright, we do expect Company revenue for the first quarter of 2007 to be lower than it was in the fourth quarter 2006, due to a major customer’s internal production delays and due to shortages of other key materials for their products unrelated to ultracapacitors. As this customer finds alternative sources of these non-ultracapacitor key building blocks, we anticipate long term increased demand of our BOOSTCAP products.

Gross Profit

Gross profit for 2006 was approximately $12.3 million, or 23% of revenue, compared with $14.0 million, or 31% of revenue, for the prior year. The gross profit within the BOOSTCAP product line decreased because of increased production costs associated with our ramp up and phase in of increased manufacturing capacity. The challenge continues to be the ability to ramp up production and keep pace with demand while simultaneously achieving anticipated production efficiencies. Once these efficiencies are fully in place we anticipate achieving the required cost reductions to meet our pricing strategy. We expect to continue driving down production costs to meet the pricing requirements of the markets in which we compete.

Although our overall gross profit for 2006 was lower, there was an improvement in the gross profit of our High Tension products compared with 2005. High Tension gross profit improvements were primarily a result of reduced manufacturing costs and increased volume. Additionally, gross profit for Microelectronics products improved compared with 2005 primarily as a result of increased single board computer demand from NPOESS.

For the year ended December 31, 2006 costs of sales also included $211,000 of stock compensation expense related to our adoption of SFAS 123R versus the comparable period where there was no expense for stock compensation.

Selling, General & Administrative (SG&A) Expense

SG&A expenses were $16.4 million for 2006 compared with $14.1 million for 2005. The increase is predominantly related to stock compensation expense for restricted stock and stock option awards of $2.3 million recognized in 2006 related to our adoption of SFAS 123R, compared with $361,000 for the same period in 2005. Additionally, sales expense, including labor and labor related expenses, outside commissions and advertising, increased to support significantly increased BOOSTCAP revenue.

Research & Development (R&D) Expense

R&D expenses were $10.1 million for 2006 compared with $7.2 million for 2005. Increased R&D spending was a result of new product development efforts for BOOSTCAP and Microelectronics product lines as well as

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higher spending on intellectual property activity for patent filings. BOOSTCAP development efforts included electrode, ultracapacitor, and module designs while Microelectronics development efforts focused on single board computer development. We introduced several new BOOSTCAP products in 2006 and we anticipate continuing our investment in R&D at levels similar to 2007.

Provision (Benefit) For Income Taxes

We recorded a $208,000 tax provision during 2006 compared with a $49,000 tax provision during 2005. The provisions recorded relate to our Swiss subsidiary. The Swiss subsidiary has a tax holiday, which was extended in 2005 for an additional five years.

We have not recorded an income tax benefit for our net loss from fiscal 2006 due to the uncertainty surrounding the realization of the associated deferred tax asset. However, we have a recorded a deferred tax asset, of approximately $1.8 million, and a deferred tax liability of similar amount, for the embedded conversion rights of our convertible debentures. These amounts are netted in the Balance Sheet. Additionally, we have established a valuation allowance against deferred tax assets other than those related to convertible debentures.

Discontinued Operations

In March 2001, we sold our Government Systems business for $20.7 million and recorded a gain of $1.1 million, net of a $2.7 million provision mainly related to ongoing lease obligations. As of December 31, 2006 there was no reserve provision as the lease expired in April 2006.

We were named as a defendant in a suit filed on March 4, 2004 in the Superior Court of the State of California for the County of San Luis Obispo. This suit, Edmonds vs. I-Bus/Phoenix, Inc., was filed by the plaintiff on his behalf and allege damages concerning the repurchase of I-Bus/Phoenix, Inc. shares. On September 12, 2006 a California jury ruled in favor of the plaintiff for the amount of $231,000. The Company paid $435,000, including interest. The expense is included in discontinued operations.

During fiscal 2006, preferred shareholders of PurePulse provided the Company with a release of liability. Accordingly, a reserve of approximately $259,000 was reversed and is included in discontinued operations.

Year Ended December 31, 2005 Compared with Year Ended December 31, 2004

Revenue

Revenue for the year ended December 31, 2005 was $45.4 million, compared with $32.2 million for the year ended December 31, 2004. This represents an increase of $13.2 million, or 41%, from the prior year. Half of the revenue increase came from the BOOSTCAP product line, which experienced increased demand for its products as well as growth from the USABC contract revenue. Microelectronics revenue provided approximately 15% of the 2005 revenue growth primarily due to revenue from the NPOESS contract. Revenue for the year ended December 31, 2004 included $1.0 million in license fees received from Yeong-Long Technologies, Inc. (“YEC”) and $1.0 million from low-margin magnetics-based products, neither of which continued in 2005.

Gross Profit

Gross profit for 2005 was approximately $14.0 million, or 31% of revenue, compared with $6.9 million, or 21% of revenue, for the prior year. Included in 2005 gross profit was the impact of contract revenue from both the USABC and NPOESS contracts. These two contracts provided 7% of the total 31% gross profit for 2005. Included in 2004 gross profit was the impact of license fee revenue from YEC, which provided 3% of the total 21% of gross profit for 2004.

Excluding the impact of contract and license fee revenue, gross profit improvement during 2005 was driven primarily by the BOOSTCAP product line, which drove product costs below selling prices accepted at the end of

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2004. BOOSTCAP volume increases drove 61% of the gross profit improvement with the remainder driven by price. Reserves of $2.3 million recorded for customer orders received in 2004, which were priced below projected production costs, were fully utilized during 2005. Additional reserves of approximately $618,000 were recorded in the first and third quarters of 2005 for customer orders received priced below production costs. We have received a customer order subsequent to December 31, 2005 that is priced below projected production costs and will require a reserve of approximately $352,000 in the first quarter of 2006. Additional reserves may be required against future orders depending on the degree to which we are able to reduce our product costs at the time orders are placed.

Selling, General & Administrative (SG&A) Expense

SG&A expenses were $14.1 million for 2005 compared with $10.2 million for 2004. During 2005, we recorded $361,000 for stock compensation expense and $614,000 for severance pay versus $112,000 of severance pay during 2004. Sales commissions increased $531,000 and audit fees increased $427,000 in 2005 versus 2004. The voluntary reduction in executive pay realized in 2004 was reinstated in 2005, and accounts for $354,000 of increased SG&A cost. Higher compensation costs, excluding executive pay, were $942,000, which was driven primarily by new hires supporting our growth.

Research & Development (R&D) Expense

R&D expenses were $7.2 million for 2005 compared with $5.5 million for 2004. Increased R&D spending was a result of new product development efforts for BOOSTCAP and Microelectronics product lines as well as higher spending on intellectual property efforts for patent filings. BOOSTCAP development efforts included electrode, ultracapacitor, and module designs while Microelectronics development efforts focused on single board computer development. We expect to introduce a large number of new BOOSTCAP products in 2006 and, therefore, expect to continue our investment in R&D at levels similar to 2005.

Provision (Benefit) For Income Taxes

We recorded a $49,000 tax provision during 2005 compared with a $712,000 tax provision during 2004. The provisions recorded relate to our Swiss subsidiary. The Swiss subsidiary had a tax holiday, which was extended in 2005 for an additional five years. The extended tax holiday reduced Maxwell’s provision for income taxes by $158,000 in 2005.

We have not recorded an income tax benefit for our net loss from fiscal 2005 due to the uncertainty surrounding the realization of the associated deferred tax asset. However, we did record a deferred tax asset, of approximately $2.5 million, and a deferred tax liability, of similar amount, for the embedded conversion rights of our convertible debentures. These amounts are netted in the Balance Sheet. Additionally, we have established a valuation allowance against deferred tax assets other than those related to convertible debentures.

Discontinued Operations

The Winding Equipment product line included in discontinued operations had sales of $1.0 million and cost of sales of $205,000 during 2004, which are reflected in income from discontinued operations. There was no activity related to the discontinued Winding Equipment product line in 2005.

Other Events

In 2006, 2005 and 2004, we made an assessment of the Company’s goodwill and intangible assets and determined that there was no impairment. Accordingly, no goodwill impairments were recognized for the years ended December 31, 2006, 2005 and 2004.

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Amortization of other intangibles was $76,000 for the years ended December 31, 2006, 2005 and 2004 and relates to the amortization of developed core technology acquired in conjunction with the 2002 acquisition of Montena Components and the amortization of ultracapacitor intellectual property that was recorded in conjunction with the 2003 merger of the Electronic Components Group, a majority-owned subsidiary, into Maxwell after the purchase of all shares not already owned by the Company.

Net interest expense for the year ended December 31, 2006 was $431,000, and interest income was $198,000 and $46,000 for the years ended December 31, 2005 and 2004, respectively. The large increase in interest payments creating an expense amount in 2006 is due to the convertible debt that was issued in December 2005.

As a result of the registration rights on the shares acquired upon debt conversion and warrants exercised the fair value of the embedded conversion features and warrants are recorded as liabilities. The initial fair value of $9.2 million as of December 20, 2005 was treated as a discount to the $25 million debenture and is being amortized over the four-year life of the note. In addition, there was $1.3 million of prepaid fees related to the issuance of the convertible debt, which are also amortized over the four-year life of the note. The $100,000 of amortization of debt discount and prepaid fees is for the period of December 20, 2005 to December 31, 2005. The full year amortized debt discount and prepaid fees totals $3.6 million for the year ended December 31, 2006.

The fair value calculation at December 31, 2006 and 2005 was impacted by the change in Maxwell’s stock price and a reduction in the time which the holder has to exercise their rights. The fair value of the embedded conversion features and warrants will be recalculated each reporting period and any difference in value from the prior period will be reflected in the Statement of Operations. The future impact of fair value recalculations will be difficult to predict, given the historical volatility of Maxwell’s stock price, however, it is a non-cash item and will not impact cash flow.

Liquidity and Capital Resources

Changes in Cash Flow

For the year ended December 31, 2006, cash used in operating activities was $14.7 million compared with $5.1 million for the year ended December 31, 2005 and $8.8 million for the year ended December 31, 2004. The use of cash for the years ended December 31, 2006, 2005, and 2004 was primarily attributed to operating losses from continuing operations in addition to increase accounts receivable and inventory balances in support of higher revenue.

Capital expenditures for the years ended December 31, 2006, 2005 and 2004 were $6.8 million, $3.8 million and $3.0 million, respectively. Capital spending has been focused on automating production processes for the High Tension and BOOSTCAP product lines. Capital expenditures for 2007 are expected to be approximately $5.4 million, which will be invested primarily in production equipment to increase capacity for the higher customer demand of BOOSTCAP products.

The financing activities for the years ended December 31, 2006, 2005 and 2004 were $6.1 million, $30.6 million and $11.9 million with the majority of these proceeds from the issuance of stock and proceeds form long and short term borrowing.

Liquidity

As of December 31, 2006, we had approximately $16.2 million in cash, cash equivalents and restricted cash and approximately $3.2 million in short-term investments. We have a line of credit for 2 million Swiss Francs (approximately $1.6 million) from a Swiss bank for working capital in Switzerland. The line was fully used as of December 31, 2006. We also have a 1.2 million Swiss Francs (approximately $943,000) term loan from a Swiss bank for capital equipment purchases. Approximately $566,000 of that facility was outstanding as of

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December 31, 2006. We have a 1 million Swiss Francs (approximately $820,000) line of credit with another Swiss bank for working capital, approximately $779,000 of the line was utilized as of December 31, 2006. We entered into a lease agreement in May 2006 for the acquisition of manufacturing equipment up to a maximum of 1.5 million Swiss Francs (approximately $1.2 million). The lease term is 48 months and $593,000 of the credit agreement had been used to purchase equipment under this agreement as of December 31, 2006. In December 2006 we secured a $1.0 million loan from a U.S. bank for capital equipment purchases, subject to a three-year repayment period as of December 31, 2006 the entire line of the credit was drawn. A $3.0 million line of credit from a U.S. bank, which was secured in 2004 and renewed in 2005, was never used and we decided to not to renew it in January, 2006.

We raised approximately $5.4 million, net of issuance expenses, from a private placement of common stock in July 2005. We raised approximately $23.7 million, net of issuance expenses, from the sale of convertible debentures in December 2005. Warrants issued as part of the convertible debt placement would provide an additional $7.5 million of cash if fully exercised. We believe that the liquidity provided by existing cash, cash equivalents, investments in marketable securities, and borrowing available under our lines of credit, will provide sufficient capital to fund our capital equipment and working capital requirements and potential operating losses for more than the next 12 months.

In November 2006 the company filed an S-3 with the Securities and Exchange Commission to from time to time sell up to an aggregate of $125,000,0000 of the company common stock, warrants or debt securities. If additional funds are required we have several options to raise capital that include negotiations to elimination the current restriction on $8 million of cash or other options that include a bridge financing and/or a private placement or public offering of marketable securities to provide additional liquidity.

Debentures, Short Term and Long Term Borrowings

Convertible Debentures

On December 20, 2005, the Company issued $25 million in aggregate principal amount of senior subordinated convertible debentures due and payable in quarterly installments from December 2007 through December 2009 (the “Debentures”) and warrants to purchase 394,737 shares of Maxwell common stock. The net proceeds of the issuance totaled approximately $23.7 million after direct placement costs of approximately $1.3 million. The Debentures are convertible into 1.3 million shares of Maxwell’s common stock at any time at the option of the holder.

Interest is due quarterly with the interest rate fixed to the Federal Funds Rate plus 1.125% per annum. All or a portion of the accrued and unpaid interest may be paid in shares of Maxwell’s common stock at the Company’s option. For fiscal year ended December 31, 2006 we made interest payments of $778,000 with 41,573 shares of Company common stock.

At the issuance date, the Debentures were convertible by the holder at any time into common shares at a price of $19.00 per share subject to adjustment upon certain events such as the sale of equity securities by Maxwell at a price below the conversion price of the Debenture. After eighteen months from the issue date, Maxwell may require that a specified amount of the principal of the Debentures be converted if certain conditions are satisfied for a period of 20 consecutive trading days.

The change in fair value on revaluation of debenture conversion rights and warrant liabilities represents the difference between the fair value of the warrants and debenture conversion between the two measurement dates using a Black-Scholes calculation. The effect of the fair market value adjustment are recorded as “Gain (loss) on embedded derivative liabilities.”

The net fair value of the holder’s and Maxwell’s conversion rights at December 31, 2006 and 2005 were liabilities of $4.6 million, and $5.8 million respectfully, these amounts are included in “Convertible debentures and long-term debt” on the balance sheet.

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The warrants issued in connection with the issuance of the Debentures had an exercise price of $19.00 at the issuance date, subject to adjustment upon certain events such as the sale of equity securities by Maxwell at a price below the then current exercise price. The fair value of the warrants at December 31, 2006 and 2005 was $1.9 million and $2.6 million respectively and is included in “Stock warrants” on the balance sheet. The warrants are exercisable at any time through December 20, 2010. No warrants had been exercised as of December 31, 2006.

As long as Debentures are outstanding, the Company is required to maintain a cash balance of $8.0 million. This amount is classified as restricted cash at December 31, 2006 and 2005.

Short-term borrowings

Maxwell SA, our European subsidiary, has a 2.0 million Swiss Francs (approximately $1.6 million as of December 31, 2006) credit agreement with a Swiss bank. Borrowings under the credit agreement bear interest at 3.95% with repayment terms extending beyond one month from the date of funding. Borrowings under the credit agreement are unsecured and as of December 31, 2006 and 2005, the full amount of the credit line was drawn.

Maxwell SA has a 1.0 million Swiss Francs (approximately $820,000 as of December 31, 2006) overdraft credit agreement with a Swiss bank, which renews annually. Borrowings under the credit agreement bear interest at 3.4%. Borrowings under the credit agreement are unsecured and as of December 31, 2006, $779,000 was drawn on the overdraft credit line. The agreement requires our Swiss subsidiary to maintain a minimum equity amount of 5.0 million Swiss Francs, we were in compliance with this covenant as of December 31, 2006.

In January, 2006, a $3.0 million credit line from a U.S. bank expired. The line had never been drawn and management decided not to renew the line.

Long-term borrowings

Maxwell, SA has a term loan with a maximum draw of 1.2 million Swiss Francs, (approximately $943,000 as of December 31, 2006), for financing specific capital equipment expenditures. Borrowings under the term loan are secured by the equipment being purchased. This credit agreement bears interest at the Swiss inter-bank borrowing rate plus 2.0%. The term loan can be borrowed in quarterly advances up to the maximum limit and repaid over one to five years. As of December 31, 2006, approximately $566,000 was outstanding. The weighted average interest rate on the funds borrowed at December 31, 2006 was 4.1%.

Maxwell, SA has a lease agreement for the acquisition of manufacturing equipment up to an amount of 1.5 million Swiss Francs (approximately $1.2 million as of December 31, 2006). Under this lease agreement borrowings are for a minimum purchase of 250,000 Swiss Francs and the lease is secured by the equipment being purchased. The leasing fee is 2.22% of the acquisition price plus VAT and a residual value of .5% of the acquisition price. Equipment suppliers are paid directly by the bank with interest payable at a rate of 6.75% per annum until the entire amount has been borrowed at which time the lending arrangement converts to a lease. As of December 31, 2006 $593,000 of this credit agreement had been paid to suppliers.

In December 2006, we secured a $1.0 million loan from a U.S. bank for capital equipment purchases, subject to a three-year repayment period. The agreement bears interest at a rate of the US Government Treasury note plus 825 basis points. As of December 31, 2006 the entire line of credit was drawn.

In December 2006 the Company secured a loan from a U.S. bank in the amount of $26,000 for a vehicle. The loan is subject to a five year repayment period. The agreement bears interest at a rate of 4.9% and as December 31, 2006 $26,000 was outstanding.

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Stock Sale

In November 2004 and July 2005, the Company raised approximately $10.3 and $5.5 million, respectively, after deduction of expenses and fees through the sale of approximately 1.7 million shares of common stock to institutional investors. The Company sold the shares directly to the investors in a negotiated transaction in which no underwriters were used for placement. The shares had previously been registered under the Securities Act of 1933, as amended, pursuant to a shelf registration statement filed on Form S-3 with the Securities and Exchange Commission in September 2004.

Discontinued Operations

Cash from discontinued operations has fluctuated from a source of cash in 2004 to a use of cash in 2006 and 2005. The use of cash from discontinued operations has been caused primarily by the PurePulse business and by vacant facilities associated with the Government Systems business. The source of cash in 2004 was a result of the discontinued Winding Equipment business, which generated sales of $1 million in 2004 that more than offset the use of cash from the other discontinued operations.

Government Audits

The Company was the subject of government audits of two businesses sold or discontinued in 2001. A contract, not assumed by the acquirers of the Company’s former defense contract business, entered into in 1990 and completed in the late 1990s was being audited by the Defense Department’s auditing agency. The Defense Department’s audit was completed in 2005 and the Company reimbursed an immaterial amount to finalize the audit.

The Internal Revenue Service (IRS) had assessed the Company with a penalty of approximately $262,000 for failure to file Form W-2s for a business sold in 2001. The acquiring company of our former business did write the IRS stating that they would be responsible for the filing of 2001 Form W-2s. During 2005, the IRS fully released the Company from the $262,000 penalty.

The Defense Department’s auditing agency audited a contract entered into by our Microelectronics group as a subcontractor in 1995 and completed in 1999. The Company is contracted with a subcontractor, who received a letter after December 31, 2006 releasing them of any obligations from the primary contractor. We have received a verbal release from the subcontractor and have requested that they provide a letter releasing Maxwell from any obligations for the audit. Based on the information that we have received, we believe the contingent liability accrual is no longer probable. Therefore, the $464,000 liability was reversed in the fiscal year ending 2006.

Other Events

In 2005, a customer brought to our attention a possible defect in a product that we sourced from another manufacturer and resold to the customer. The matter has not been resolved and we have not yet been able to determine what, if any, warranty exposure Maxwell may have, and therefore, we have not recorded any warranty reserve provision. We carry insurance that we believe would cover all or a portion of any obligation that might ultimately arise from this matter.

Minority Equity Interests in Subsidiaries

PurePulse, which suspended operations in 2002 and is classified as discontinued operations, has minority equity investors. These investors are former employees who were issued shares when PurePulse originally was incorporated and former employees who have exercised stock options in that entity. As of December 31, 2006 and 2005, minority investors owned approximately 11% and 18%, respectively of the outstanding stock of PurePulse.

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Contractual Obligations

Critical Accounting Policies

This discussion and analysis of our financial condition and results of operations is based upon our consolidated financial statements, which are prepared in accordance with accounting principles generally accepted in the United States of America, which we refer to as U.S. GAAP. We have used certain assumptions and judgments in the preparation of these financial statements, which assumptions and estimates may potentially affect the reported amounts of assets and liabilities and the disclosure of contingencies as well as reported amounts of revenues and expenses. The following may involve a high degree of judgment and complexity and, as such, management assumptions and conclusions in these areas may significantly impact the results of operations of the Company.

Revenue Recognition

For the fiscal year ended December 31, 2006, substantially all of our revenue was derived from the sale of manufactured products directly to customers and revenue recognized at the time costs were incurred for certain long-term contracts. Licensing fees received for the right to manufacture products based on our proprietary ultracapacitors design was a revenue category in fiscal years ended December 31, 2006 and 2004. Product revenue is recognized, according to the guidelines of SEC Staff Accounting Bulletin Numbers 101 Revenue Recognition in Financial Statements, and 104 Revenue Recognition, when title passes to the customer at either shipment from our facilities, or receipt at the customer facility, depending on shipping terms, provided collectability is reasonably assured. This method has been consistently applied from period to period and there is no right of return. Revenue on fixed price government contracts is recognized at the time costs are incurred and is calculated on a percentage of completion basis, in accordance with Statement of Position 81-1, Accounting for Performance of Construction-Type and Certain Production-Type Contracts and is limited by the funding of the prime contractor. In prior years, certain continuing and discontinued segments involved revenues from both long-term and short-term fixed price contracts and cost plus contracts with the U.S. Government directly or through a prime contractor. Those revenues, including estimated profits, were recognized at the time the costs were incurred and included provisions for any anticipated losses. These contracts are subject to rate audits and other audits, which could result in the reduction of revenue in excess of estimated provisions. In turn, this could increase losses for the periods in which any such reduction occurs. In the fiscal year ended December 31, 2006 the Company recognized revenue that relates to specific deliverables, in accordance with EITF 00-21, Accounting for Revenue Arrangements with Multiple Deliverables. This revenue involves a contract that grants a license to manufacture and market products in Mainland China, using Maxwell’s proprietary large cell and multi-cell module technology under a separate brand. The contract, obligates the manufacturer to source ultracapacitor electrode material from Maxwell, the agreement has no general right of return and requires no refunds

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Excess and Obsolete Inventory

We value inventories at the lower of cost or market. In assessing the ultimate realization of inventories, we make judgments as to future demand requirements and compare that with current and committed inventory levels. The markets for the Company’s products are extremely competitive and are characterized by rapid technological change, new product development, product obsolescence and evolving industry standards. In addition, price competition is intense and significant price erosion generally occurs over the life of a product. We have recorded significant charges for reserves in recent periods to reflect changes in market conditions. We believe that future events are subject to change and revisions in estimates may have a significant adverse impact on the balance sheet and statement of operations.

Goodwill

We account for goodwill in accordance with SFAS No. 142, “Goodwill and Other Intangible Assets.” This standard requires that goodwill no longer be amortized but is subject to an annual impairment test and when an event occurs or circumstances change such that it is reasonably possible that an impairment may exist. The first step consists of estimating the fair value of each reporting unit and comparing those estimated fair values with the carrying values of the reporting units, which includes the allocated goodwill. If the fair value is less than the carrying value, a second step is performed to compute the amount of the impairment by determining an implied fair value of goodwill. The implied fair value of goodwill is the residual fair value derived by deducting the fair value of a reporting unit’s assets and liabilities from its estimated fair value, which was calculated in step one. The impairment charge represents the excess of the carrying amount of the reporting unit goodwill over the implied fair value of their goodwill. We have determined the fair value of our reporting units based on the market value of the Company’s stock. The market value of the Company’s stock at December 31, 2006 exceeded the carrying value of the reporting unit and, therefore, the second step calculation to determine the implied fair value of goodwill was not necessary.

We cannot say with certainty that we may not incur charges for impairment of goodwill in the future if the fair value of Maxwell Technologies and Maxwell SA decrease due to market conditions, revisions in our assumptions or other unanticipated circumstances. Any additional impairment charges will adversely affect our results of operations.

Convertible Debentures

We account for convertible debentures and warrants in accordance with SFAS No. 133, “Accounting for Derivative Instruments and Hedging Activities.” This standard requires the conversion feature of convertible debt be separated from the host contract and presented as a derivative instrument if certain conditions are met. EITF 00-19, “Accounting for Derivative Financial Instruments Indexed to and Potentially Settled in a Company’s Own Stock” and EITF 05-2, “The Meaning of “Conventional Convertible Debt Instrument” in Issue No. 00-19” were also analyzed to determine whether the debt instrument is to be considered a conventional convertible debt instrument and classified in stockholders’ equity. The convertible debentures issued on December 20, 2005 were evaluated and determined not to be conventional convertible and, therefore, because of certain terms and provisions including liquidating damages under the associated registration rights agreement the embedded conversion option was bifurcated and has been accounted for as a derivative liability instrument. The stock warrants issued in conjunction with the convertible debt on December 20, 2005 were also evaluated and determined to be a derivative instrument and, therefore, classified as a liability on the balance sheet. The accounting guidance also requires that the conversion feature and warrants be recorded at fair value for each reporting period with changes in fair value recorded in our Statement of Operations.

A Black-Scholes valuation calculation was applied to both the conversion features and warrants at December 20, 2005, December 31, 2006 and 2005. The December 20, 2005 valuation was used for the effective debt discount that these instruments represent. The debt discount is amortized over the four-year life of the debentures using the effective interest method. The December 31, 2006 and 2005 valuations were used to record

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the fair value of these instruments at the end of the reporting periods with any difference from prior period calculations reflected in the Statement of Operations. The Company’s stock price is one input used in the Black-Scholes calculation, which has a significant impact on the calculation. The change in the Company’s stock price will have a gain or loss effect on embedded derivative liabilities in the Statement of Operations. The volatility of the Company’s stock price is likely to generate large swings in the valuations of the conversion features and warrants in future periods.

Stock Compensation

Effective January 1, 2006 the Company adopted the fair value recognition provisions of revised Statement of Financial Accounting Standards No. 123 (revised) (SFAS 123R), Share-Based Payment, which establishes accounting for share-based awards exchanged for employee services and requires companies to expense the estimated grant date fair value of these awards over the requisite employee service period. The Company elected the modified prospective method, which provides for certain changes to the method for valuing share-based compensation. Under the modified prospective method, prior periods are not revised for comparative purposes. The expense recognition provisions of SFAS 123R apply to new awards and to unvested awards that are outstanding on the effective date and awards subsequently modified or cancelled. Estimated compensation expense for awards outstanding at the effective date are being recognized over the remaining service period using the compensation cost calculated for pro forma disclosure purposes under SFAS No. 123, Accounting for Stock-Based Compensation.

In the prior period the Company adopted the disclosure only provisions of SFAS No. 123, as amended by SFAS No. 148 Accounting for Stock Based Compensation—Transitions and Disclosure. In accordance with the provisions of SFAS No. 123, the Company applied Accounting Principles Board Opinion No. 25 and related interpretations in accounting for its stock option plans, and accordingly, $361,000 and zero compensation expense was recognized for the years ended December 31, 2005 and 2004.

Impact of Inflation

We believe that inflation has not had a material impact on our results of operations for any of our fiscal years in the three-year period ended December 31, 2006. However, there can be no assurance that future inflation would not have an adverse impact on our operating results and financial condition.

Pending Accounting Pronouncements

In July 2006, the FASB issued Interpretation No. 48, Accounting for Uncertainty in Income Taxes (FIN 48). FIN 48 clarifies the accounting and reporting for income taxes recognized in accordance with SFAS No. 109, “Accounting for Income Taxes.” This Interpretation prescribes a comprehensive model for the financial statement recognition, measurement, presentation and disclosure of uncertain tax positions taken or expected to be taken in income tax returns. Fin 48 is effective for fiscal years beginning after December 15, 2006. The Company does not expect the adoption of FIN 48 to have a material impact on the Company’s financial position or results of operations.

In September 2006, the FASB issued SFAS No. 157 Fair Value Measurement. SFAS 157 provides a new single authoritative definition of fair value and provides enhanced guidance for measuring the fair value of assets and liabilities and requires additional disclosures related to the extent to which companies measure assets and liabilities at fair value, the information used to measure fair value, and the effect of fair value measurements on earnings. SFAS 157 is effective for the Company as of January 1, 2008. The Company is currently assessing the impact, if any, of SFAS 157 on its consolidated financial statements.

In September 2006, the FASB issued SFAS No. 158 Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans—an amendment of FASB Statements No. 87, 88, 106, and 132(R)” (“SFAS

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158”). SFAS 158 requires balance sheet recognition of the over funded or under funded status of pension and postretirement benefit plans. Under SFAS 158, actuarial gains and losses, prior service costs or credits, and any remaining transition assets or obligations that have not been recognized under previous accounting standards must be recognized as a component of accumulated other comprehensive income (loss) within stockholders’ equity, net of tax effects, until they are amortized as a component of net periodic benefit cost. In addition, the measurement date and the date at which plan assets and the benefit obligation are measured, are required to be the Company’s fiscal year end. SFAS 158 is effective for the Company as of December 31, 2007, except for the measurement date provisions, which are effective December 31, 2009. The plan reported on our financial statement is regulated by the Swiss Government and is equally funded by the employees and the Company.

In February 2007, the FASB issued SFAS No. 159, The Fair Value Option for Financial Assets and Financial Liabilities—Including an Amendment of FASB Statement No 115 which permits entities to choose to measure many financial instruments and certain other items at fair value. SFAS No 159 also includes an amendment to SFAS No. 115, “Accounting for Certain Investments in Debt and Equity Securities,” which applies to all entities with available-for-sale and trading securities. This Statement is effective as of the beginning of an entity’s first fiscal year that begins after November 15, 2007. The Company does not anticipate any material impact on its consolidated financial statements upon the adoption of this standard.

Off Balance Sheet Arrangements

None.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

We face exposure to financial market risks, including adverse movements in foreign currency exchange rates and changes in interest rates. These exposures may change over time and could have a material adverse impact on our financial results. We have not entered into or invested in any instruments that are subject to market risk, except as follows:

Foreign Currency Risk

Our primary foreign currency exposure is related to our subsidiary in Switzerland. Maxwell Technologies SA has Euro and local currency (Swiss Franc) revenue and local currency operating expenses and loans. Changes in these currency exchange rates impact the U.S. dollar amount of revenue, expenses and debt. We do not hedge our currency exposures.

Interest Rate Risk

At December 31, 2006, we had approximately $28.2 million in debt, of which $22.5 million is classified as long-term debt. We do not anticipate significant interest rate swings in the near future; however, if it does occur it may affect the consolidated balance sheet or the statement of operations. The impact on earnings or cash flow during the next fiscal year from a change of 1000 basis points in the interest rate would have a $2.8 million effect on our related interest expense.

We invest excess cash in debt instruments of the U.S. Government and its agencies, high-quality corporate issuers and money market accounts. The primary objective of our investment activities is to preserve principal while maximizing yields without significantly increasing risk. Our current policies do not allow the use of interest rate derivative instruments to manage exposure to interest rate changes. As of December 31, 2006, third parties manage approximately $3.2 million of the investment portfolio under guidelines approved by the Company’s Board of Directors. The balance of our cash is invested in money market accounts with banks. A 1000 basis point change in the interest rate on our marketable securities would not have a material effect on our interest income.

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Fair Value Risk

We record an adjustment on our convertible debenture adjusting the fair value of the embedded conversion options and stock warrants. The change in these instruments is primarily impacted by the price of our stock at the end of each reporting period. This adjustment creates non-cash effect on our statement of operations which may have a significant impact.

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Item 8. Financial Statements and Supplementary Data

Our consolidated financial statements and notes thereto appear on pages 43 to 73 of this Annual Report on Form 10-K.

MAXWELL TECHNOLOGIES, INC. AND SUBSIDIARIES

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors

Maxwell Technologies, Inc.

San Diego, California

We have audited the consolidated balance sheets of Maxwell Technologies, Inc. as of December 31, 2006 and 2005, and the related consolidated statements of operations, stockholders’ equity and comprehensive loss and cash flows for each of the three years in the period ended December 31, 2006. Our audits also included the financial statement schedule of Maxwell Technologies, Inc. listed in Item 15(a). These financial statements and financial statement schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Maxwell Technologies, Inc. as of December 31, 2006 and 2005, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2006, in conformity with U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedule, when considered in relation to the basic consolidated financial statements taken as a whole, presents fairly in all material respects the information set forth therein.

As discussed in Note 1 to the consolidated financial statements, the Company changed its method of accounting for stock-based compensation in 2006.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the effectiveness of Maxwell Technologies, Inc.’s internal control over financial reporting as of December 31, 2006, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Our report dated March 15, 2007 expressed an unqualified opinion on management’s assessment of the effectiveness of Maxwell Technologies, Inc.’s internal control over financial reporting and an opinion that Maxwell Technologies, Inc. had not maintained effective internal control over financial reporting as of December 31, 2006, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

/s/    MCGLADREY & PULLEN, LLP

San Diego, California

March 15, 2007

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MAXWELL TECHNOLOGIES, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in thousands, except per share data)

The accompanying notes are an integral part of these consolidated financial statements.

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MAXWELL TECHNOLOGIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share data)

The accompanying notes are an integral part of these consolidated financial statements.

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MAXWELL TECHNOLOGIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY AND COMPREHENSIVE LOSS

(in thousands)