UltraFire Protected 18650 3.7V 2400mAh Lithium Batteries (2-Pack Grey)
The UltraFire 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.