... 39V, Discharge Cut-off Voltage 6. Charging Voltage: 54.6V: 7. Standard charge: 2A CC(constant current)charge to 54.6V ... 6, Capacity, resistance, Voltage, platform time consistency is good 7, With short-circuit production function, safe and reliable 8, Factory ... are available 4, We could design and produce the battery pack with aluminium alloy shell and assembly procession for customized configurations ...