3.7V 1000mAh Rechargeable Li-ion Power Battery 1.8×1 x 0.4 inch

3.7V 1000mAh Rechargeable Li-ion Power Battery Dimension: 1.8 x 1 x 0.4 inch Capacity: 1000 mAh Output Voltage: 3.7 V Charging Voltage: 4.2 V