The LP12V/5.4Ah lead battery has a large capacity of up to 5400mAh (at 0.27A). The lead battery is very compact, is largely maintenance-free and delivers very reliable performance. The LP12V/5.4Ah is used on our FirePro V4 DIBt certified fire door controls and therefore complies with the standards and guidelines of VdS Schadenverhütung.