LiFePO4 batteries are highly safe, have no risk of explosion and fire, and are environmentally friendly, non-toxic and non-polluting. No memory effect - the battery can be charged in any state of discharge, giving you peace of mind. Nominal Voltage:3.2V Nominal capacity:50Ah Working voltage:2.0V~3.65V AC impedance resistance(1khz):≤1mΩ Max. pulse charge / discharge current: 1C(30S) Dimension:160.5mm(L)*140.5mm(W)*24.5mm(T) Weight: 1.15kg