Panasonic's tough valve regulated lead acid rechargeable batteries are designed to provide outstanding performance in withstanding overcharge, over-discharge, and resisting vibration and shock. Compact, these batteries save installation space, while providing full and reliable power. The use of special sealing epoxies, tongue and groove case and cover construction, and long-sealing paths for posts and connectors, assures that the Valve Regulated Lead Acid battery will offer exceptional leak resistance, and allows them to be used in any position.