Sevcon, Inc., through its subsidiaries, designs and sells motor controllers under the Sevcon name in the United States, the United Kingdom, France, South Korea, Japan, and China. It operates in three segments: Electronic Controls, Capacitors, and Battery Chargers. The Electronic Controls segment produces and sells microprocessor based control systems for use in on and off-road vehicles, including cars, trucks, buses, motorcycles, fork lift trucks, aerial lifts, mining vehicles, airport tractors, sweepers, and other electrically powered vehicles. The Capacitor segment produces and sells special metalized film capacitors to electronic equipment manufacturers for use as components in the power electronics, signaling, and audio equipment markets. The Battery Chargers segment designs, manufactures, and sells battery chargers to electric vehicles, power management, and uninterrupted power source systems for industrial, medical, and telecom applications, as well as electronic instrumentation for battery laboratories. Sevcon, Inc. was founded in 1987 and is based in Southborough, Massachusetts. As of September 27, 2017, Sevcon, Inc. operates as a subsidiary of BorgWarner Inc.