The 72V40Ah Tricycle LiFePO4 battery Pack from OptimumNano Energy is a EV Battery with Battery Capacity 40000 mAh, Nominal Voltage 72 V, Charging Voltage 3.65 V, Charging Current 8.0 to 20 A, Discharging Voltage 2.5 V. More details for 72V40Ah Tricycle LiFePO4 battery Pack can be seen below.