Color White + Black + Multi-Colored Brand Ultrafire Model 18650 Quantity 2 Piece Material Lithium ion Cell Type Lithium Ion Battery Model 18650 Head Type Button Top Mark Capacity 4200 mAh Actual Capacity 1500 mAh Voltage 3.7 V Rechargeable Yes Rechargeable Times Others1000 Built-in Protected Circuit No Over Voltage Protection No Short-Circuit Protection No Over-Charging Protection Yes Over-Discharging Protection Yes Mercury Free Yes Packing List 2 x Batteries
Brand SingFire Color Green + White Material Lithium Quantity 4 Type Lithium Ion Model 18650 Mark Capacity 2400mAh Actual Capacity 2200mAh Battery Voltage 3.7 V Rechargeable Yes Rechargeable Times 500 Buitl-in Protected Circuit Yes Over Voltage Protection Yes Short-circuit Protection Yes Over-charging Protection Yes Over-discharging Protection Yes Mercury Free Yes Application LED flashlight or other device needing 3.7V power Other Features The SingFire 18650 rechargeable Lithium battery is equipped with a protection circuit board (PCB) on the negative pole. The PCB can protect the battery from overcharge over-discharging overload and short circuit which can make the battery safer and longer lifespan. The battery is environment friendly and perfect for super bright flash and other devices; Size: 69 x 18mm (+/- 1mm); 2 x AA / 26650 / 18650 / 17670 / 14500 / 16340 universal charger with LED charging indicator: Charging-RED Full Charged-GREEN Packing List 4 x SingFire BRC 18650 batteries 1 x1 8650 charger (Input: AC 100~240V 50~60Hz; Output: DC 4.2V 600mAh; 2-flat-pin plug)
Battery should be charged for 4 hours for the first time use; Charge it immediately if the bulb light is dim; With charging indicator: red: charging green: fully charged; Make sure it is installed correctly.