Panasonic's tough valve-regulated lead acid (VRLA) rechargeable batteries are designed to provide outstanding performance in withstanding overcharge, overdischarge, and resisting vibration and shock. These compact 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.

Panasonic VRLA batteries utilize pasted lead-calcium plates with the electrolyte in the battery held captive in an absorbent glass mat (AGM) separator located between the plates that immobilizes the electrolyte in the cell. AGM separator material is a highly porous, absorbent micro fiberglass mat mixed with polymer fibers that immobilizes the electrolyte and creates a situation where a spill of electrolyte is highly unlikely.