Product Details:Material: Li-ion ( NCR )Type: 32650Nominal voltage: 3.7V ( at 0.2C discharge current )Capacity: 6500 mAh( typical)・ 6250mAh ( minimum ) ( from 4.2V to 2.8V at 0.2C discharge current )Charge method: CC / CV ( constant current / constant voltage )Charge voltage: 4.2 + / - 0.049VCharge current: 1000mA x 7hrs ( standard ) 2000mA x 4hrs ( rapid )Discharge current: 3250mA ( normal discharge current) 18000mA ( maximum continuous discharge)Pulse discharge curren: 25ADischarge cut-off voltage: 2.75V