Specification of 54.6V 20.4Ah li-ion custom lithium ion battery rechargeable Item Rating Note 3.1 Capacity Typical 20.4Ah Minimum 20Ah 3.2 Nominal Voltage Average 54.6V 3.3 AC Impedance Resistance ≤150mΩ 3.4 Discharge Cut-off Voltage 32.5V 3.5 Charge Current 4A Standard Charge 3.6 Max. Charge Voltage 54.6V 3.7 Charge Time 4h 3.8 Max. Charge Current 6A 3.9 Max. Discharge Current 30A 3.10 Weight Approx 3KG 3.11 Operating Temperature Charge 0~+45℃ Discharge -20~+60℃ 3.12 Storage Temperature less than 1 month -20~+50℃ Recommended storage temperature: 20℃,at the shipment state less than 3 months -20~+40℃ Application Hotel Service Robot Electri Vehicle Electric tool Gas Chromatograph AGV/RGV Golf cart Patrol car Uninterrupted Power Supply