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:271Ah Working voltage:2.0V~3.65V AC impedance resistance(1khz):≤0.14±0.05mΩ Max. pulse charge / discharge current: 1C(30S) Dimension: 207.3mm(L)*173.6(W)mm*71.57(T)mm Weight: 5.41kg