Founded in 1922, Keystone Battery has been in Winchester since 1970 and under the present ownership from 1995. It specializes in replacement batteries in quantities from one to 100 or more.
The most popular batteries sold are for fire, security and emergency lighting systems and UPS units. Replacement batteries for FiOS units are also stocked. Keystone installs replacement car batteries at its facility for no additional charge.
The company supports local community organizations, including the police and fire departments.