CoreParts MBXMP-BA431, Lithium-Ion (Li-Ion), 3.8 V, 9.5 Wh, 61.5 mm, 78.9 mm, 3.1 mm CoreParts MBXMP-BA431. Battery technology: Lithium-Ion (Li-Ion), Battery voltage: 3.8 V, Battery capacity: 9.5 Wh. Width: 61.5 mm, Height: 78.9 mm, Depth: 3.1 mm. Quantity per pack: 1 pc(s), Package width: 99 mm, Package depth: 18 mm