Maxwell Technologies is an American developer and manufacturer headquartered in San Diego, California. The company focuses on developing and manufacturing energy storage and power delivery solution-related products for automotive, heavy transportation, renewable energy, backup power, wireless communications and industrial and consumer electronics applications.

The company was founded in 1965 as Maxwell Laboratories Inc. by Raymond C. O'Rourke, Alan Kolb, Bruce Hayworth, and Terrence C. Gooding in San Diego, California. Maxwell Laboratories was originally a government contractor, providing advanced physics, pulsed power, space effects analysis and other research and development services to the U.S. military and other government agencies. The company began converting its focus to commercial applications for its technologies and products in the early 1990s, and now generates all of its revenue from commercial sources. In 1996, Maxwell Laboratories, Inc. changed its name to Maxwell Technologies, Inc.

Maxwell Energy Products, a division that included the Maxwell High Voltage Capacitor product line, was acquired in March 2000 by General Atomics, eventually merging into General Atomics Electronic Systems, Inc. in 2003.

In 2007, Maxwell Technologies won $3 million contract from Astrium Satellites to supply computers for European Space Agency’s ‘Gaia’ Astronomy mission. Maxwell supplied seven Maxwell SCS750 SBCs to process images and data gathered by the satellite’s camera.

In November 2013, Maxwell Technologies opens manufacturing facility in Peoria, Arizona.

In December 2013, Maxwell Technologies signed a memorandum of understanding (MOU) with SK Innovation to develop the next generation energy storage solution with Maxwell’s ultracapacitors and SK’s lithium-ion batteries.

In April 2016, Maxwell completed its sale of the Microelectronics product line to Data Device Corporation.

In April 2017, Maxwell Technologies completed the acquisition of the Nesscap Energy Business.

Maxwell Technologies is headquartered in San Diego, California and principal operations are currently located in both San Diego, California and Peoria, Arizona. The company also has European bases of operations in Rossens, Switzerland and München, Germany and Asia base of operation in Shanghai, China and Seoul, Korea. Currently, the company employs approximately 492 people worldwide.