Note: We are currently unable to ship to addresses in HongKong、 mainland of China.

The UltraFire protected 18650 rechargeable cell 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.

- Protected against over-charging and over-draining- Operating voltage: 3.70 - 3.80V- Capacity: 2400mAh- Maximum charge/drain rate: 1.5C- Overcharging protection point: 4.2V
- Overdraining protection point: 2.75V

** Actual product bares "Ultrafire/Protector 2400mAh protected" markings. This image is taken from a sample battery. I'll update the picture shortly to the Ultrafire logo'd one.

Note: We are currently unable to ship to addresses in HongKong、 mainland of China.

The UtraFire protected 18650 rechargeable cell 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.

- Protected against over-charging and over-draining- Operating voltage: 3.70 - 3.80V- Capacity: 2400mAh- Maximum charge/drain rate: 1.5C- Overcharging protection point: 4.2V
- Overdraining protection point: 2.75V

** Actual product bares "Ultrafire/Protector 2400mAh protected" markings. This image is taken from a sample battery. I'll update the picture shortly to the Ultrafire logo'd one.
Note: this battery's diameter is slightly larger than that of the unprotected batteries. Also、 the? positive node of the battery is a lilttle recessed into the battery. So make sure your flashlight/application is compatible with this type of batteries..?Dimensions: 18.0mm (0.709") in diameter、 67.0mm (2.638") in heightWeight: 50g (1.76oz)Shell material: SteelBattery format: 18650Designed voltage: 3.7VOperating voltage: 3.7~3.8VDesigned Capacity: 2400mAhInternal resistance: