Wentronic MP f/ SIE C55/S55 (EBA-510) 800mAh Li-Pol. Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 800 mAh, Battery voltage: 3.7 V. Weight: 16 g. Colour of product: Black. Dimensions (WxDxH): 51 x 37 x 7 mm