This is a rechargeable battery for the PETZL SWIFT RL headlamp. It has a capacity of 2350mAh and uses lithium-ion technology. It is a new, unopened item, but please understand that it has been stored at home. [Brand] PETZL [Capacity] 2350mAh [Technology] Lithium-ion [Compatible Models] SWIFT RL headlamp [Condition] New