The TrustFire protected 18650 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.
 

- The voltage of full charge and cut-off discharge is 4.2V and 2.75V
- Don't heat, incinerate or reverse polarity
- Environment friendly