A123 Systems, Inc., together with its subsidiaries, designs, develops, manufactures, and sells rechargeable lithium-ion batteries and energy storage systems worldwide. The companys battery products are based on its Nanophosphate technology that delivers energy storage solutions for power generation, transmission, and distribution for application development in the transportation, electric grid services, and commercial markets. Its battery systems comprise energy storage solutions for BAE systems; and grid storage solutions, prismatic battery systems, starter battery systems, and lead acid replacement batteries. In addition, the company provides research and development services to government agencies and commercial customers. A123 Systems, Inc. sells its batteries and battery systems directly to end-user customers, as well as through reseller and distributor channels. The company was founded in 2001 and is headquartered in Waltham, Massachusetts.