Color Black + Silver Brand Lomon Model A-LV5 Quantity 1 Set Material ABS + electronic components Cell Type Lithium Ion Battery Model 18650 Head Type Button Top Mark Capacity 4200 mAh Actual Capacity 1800 mAh Voltage 3.7 V Rechargeable Yes Rechargeable Times Others1000 Built-in Protected Circuit Yes Over Voltage Protection Yes Short-Circuit Protection Yes Over-Charging Protection Yes Over-Discharging Protection Yes Mercury Free Yes Other Features Suitable for the LED flashlight LED outdoor lights electric toys and other products;With short-circuit and over current protection; Environmental friendly. Packing List 2 x Batteries