TrustFire Protected Rechargeable 3.7V "4000mAh" 25500 Li-ion Batteries (Pair)
Brand: TrustFire - Model: 25500 - Voltage: 3.7V - Capacity: 4000mAh (actual 3000mAh) - Rechargeable Li-ion battery - Built-in protection circuit - Great batteries for your flashlight or other devices - Comes as a pair