China 7.4V li ion battery 2200mAh 3C 18650 lithium rechargeable battery cell for sale 18650 Battery bulk Li-Ion Battery 2200mah 7.4V Rechargeable Battery For LED Torch Flashlight Specification: Rated Capacity 6000mAh (0.5CA Discharge) Rated Voltage 7.4V Internal Resistance ≤60mΩ (with PTC) Cut-off Discharge Voltage 2.75V Charge Upper Limit Voltage 4.20±0.05V Standard Charging Circuit 0.2C A Charging Circuit 0.5C A Standard Discharging Circuit 0.2C A Fast Discharging Current 0