Lithium-Ion (Li-Ion). 52 Wh. 15.55 V. Brand compatibility: HP. Black. Number of batteries included: 1 pc(s). Features. Brand compatibility. HP. Product colour. Black. Battery voltage. 15.55 V. Number of battery cells. 3. Battery technology. Lithium-Ion (Li-Ion). Packaging data. Quantity per pack. 1 pc(s). Number of batteries included. 1 pc(s)