Maxwell Technologies Shipping K2 Series Large Cell BOOSTCAP(R) Ultracapacitors

Enhanced Third-Generation Design Optimized for High-Volume Manufacturing; Designed to Meet Automotive Reliability Standards

SAN DIEGO, Feb. 25 -- Maxwell Technologies, Inc. a leading developer and manufacturer of innovative, cost-effective energy storage and power delivery solutions, today introduced its new K2 Series large cell BOOSTCAP® ultracapacitors.

About the size of a soda can, the K2 series BOOSTCAP cells operate at 2.7 volts and incorporate design and construction enhancements to ensure high performance, durability and long operating lifetime. Primary applications for Maxwell's K2 series products, which range from 650 to 3,000 farads, include automotive subsystems, hybrid and electric vehicle drive trains, renewable energy systems, back-up power, grid stabilization, electric rail system power and many other transportation and industrial applications that require burst power and heavy cycling that cannot be efficiently provided by a battery or power supply alone. The company is currently shipping K2 cells in production volumes and multi-cell modules ranging from 16- to 125-volts.

The K2 cell design features a rugged welded electrical pathway with increased contact and higher surface area. The K2 replaces Maxwell's previous MC series cell, the most widely sold large cell ultracapacitor in the world with more than 1 million cells currently in service.

"Rapidly increasing demand for large cell products provided the impetus for development of an enhanced cell platform that meets the most demanding electrical and environment requirements for a variety of applications and is well-suited for high-volume production," said David Schramm, Maxwell's president and chief executive officer. "The K2 cell offers greatly enhanced mechanical robustness and low resistance for longer cell life and increased electrical performance."

  Features and benefits of the K2 series ultracapacitor cells include:
  --  Ultra-low internal resistance
  --  Highest power performance available
  --  Lowest resistor-capacitor (RC) time constant
  --  2.7 V operating voltage
  --  Over one-million charge/discharge cycle lifetime
  --  Superior performance at extreme temperatures
  --  Proprietary material science and packaging technology

Maxwell manufactures and markets additional BOOSTCAP ultracapacitor products ranging from 10 to 350 farads and multi-cell modules based on those products for wind turbines, smart utility meters and a variety of other industrial, telecommunications, information technology and other applications.

Maxwell is a leading developer and manufacturer of innovative, cost-effective energy storage and power delivery solutions. Our BOOSTCAP® ultracapacitor cells and multi-cell modules provide safe and reliable power solutions for applications in consumer and industrial electronics, transportation and

telecommunications. Our CONDIS® high-voltage grading and coupling capacitors help to ensure the safety and reliability of electric utility infrastructure and other applications involving transport, distribution and measurement of high-voltage electrical energy. Our radiation-mitigated microelectronic products include power modules, memory modules and single board computers that incorporate powerful commercial silicon for superior performance and high reliability in aerospace applications. For more information, please visit www.maxwell.com, follow us on Twitter at @Maxwell_Tech, or join us on Facebook.

Forward-Looking Statements: Statements in this news release that are "forward-looking statements" are based on current expectations and assumptions that are subject to risks and uncertainties. Actual results could differ materially because of factors such as:

  --  development and acceptance of products based on new technologies;
  --  demand for original equipment manufacturers' products reaching
      anticipated levels;
  --  disruption of global financial markets and reduced credit
      availability;
  --  cost-effective manufacturing and successful outsourcing of product
      assembly;
  --  the impact of competitive products and pricing;
  --  risks and uncertainties involved in foreign operations, including the
      impact of currency fluctuations;
  --  product liability or warranty claims in excess of our reserves.

For further information regarding risks and uncertainties associated with Maxwell's business, please refer to the "Management's Discussion and Analysis of Financial Condition and Results of Operations" and "Risk Factors" sections of Maxwell's SEC filings, including, but not limited to, our annual report on Form 10-K and quarterly reports on Form 10-Q, copies of which may be obtained by contacting our investor relations department at (858) 503-3434 or at our investor relations website at http://maxwell.investorroom.com/index.php?s=118.

All information in this release is as of February 25, 2010. The company undertakes no duty to update any forward-looking statement to conform the statement to actual results or changes in the company's expectations.