Type :Rechargeable Li-ion battery Nominal voltage:7.4v Rated capacity:6600mAh Operating voltage:7.4v Nominal charge current:≤1.5A Nominal discharge current:3.5A Discharging protection current:4.5A The battery pack size:112.5*19*66.5 (mm) Inside with protective circuit:over-charge/discharge protection, over-heat protection Standard Charge Time:Depending on the charger parameters Weight : about 276g Charge temperature: -0 °C to 45 °C Storage temperature :-20 °C to 45 °C Operating humidity: 5% to …