SHORAI Lithium-Iron (LiFePO4) Powersports battery, 4.5Ah 13.2V, "L" polarity, Case Type 5, Length 5.28" Width 3.15" Height 6.30". Shorai Batteries require a charging system output of 13.1 Volts or higher at idle, and must not exceed 15.2 volts at maximum output.