Capacity: 600mAh, 900mAh, 1000 mAh,1100mAh, 1200 mAh, 1400 mAh, 1500 mAh, 1600 mAh, 1800 mAh, 2000 mAh, 2200 mAh and other capacity and battery packs according to your request. Nominal Voltage:1.2 V Charging time: Nominal charge(14 hours) , Fast charge (1.2 hours). (different capacity use different charge current ) Diameter: 13.9(mm)?0.3mm) Height: 50(mm)?.5(mm) Battery packs can be assembled according to your request.