A123 Systems LLC is a developer and manufacturer of advanced lithium-ion batteries and energy storage systems for transportation, electric grid and commercial applications. The company was founded in 2001 and is headquartered in Waltham, Massachusetts. A123 Systems has manufacturing facilities in Asia, Europe and North America. The company's products are used in a variety of applications, including electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles, and grid energy storage systems. A123 Systems has partnerships with several major automakers and has received funding from the U.S. Department of Energy.