Panasonic"s tough-sealed lead acid (SLA) rechargeable batteries are designed to provide outstanding performance in withstanding overcharge, overdischarge 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 construction, long-sealing paths for posts and connectors assures that the battery will offer exceptional leak resistance and allows them to be used in any position.