Battery pack with connector & wire | Nominal Volt.: 3.7V | Nominal Capacity: 4000mAh | Discharging: 1C/4A | Cut-off: 2V | Charging: 0.2C/800mA | Cell: 855085, 3.7V 4000mAh | Format: 1S1P | Discharging current: 1C/4000mA | Charging current: 0.2C/800mA