Profile: Keystone Battery specializes in offering battery equipment and accessories. We provide alkaline, lead-acid, lithium, nickel cadmium and nickel metal hydride batteries. Our batteries are used in automotive/truck, camera, computers, communication devices, electronics, emergency lighting, fire & security alarm, flashlight, military and medical. Our battery equipment includes bulbs & lamps, chargers, electrolytes, emergency lighting, terminals, power supplies, exit signs and battery boxes.