1.Rechargeable battery pack 2.High quality and capacity 3.9~12.6v---5200mAh 4.Un38.3 Test certificate Rechargeable battery pack1,Nominal Voltage 3.7V2, Battery ChargeStandard Charge 0.5CQuick Charge 1C3,CC Charge Cut-off Voltage 4.20±0.05V4,Battery DischargeStandard Discharge 1CMaximum Discharge 3C5,CC Discharge Cut-off Voltage 2.75±0.05V6,Charging Temperature 0°C~45 °C8,Discharging Temperature - ...