Wentronic MP f/ MOT V3688/V50/T250 900mAh Li-Ion. Battery: Lithium-Ion (Li-Ion), 900 mAh, 3.7 V, Motorola L7089, L2000, P7389, T250, V50, V51, V100, V3688, V3690, V8088. Weight & dimensions: 26 g. Other features: 53 x 37 x 7 mm