201821 3.7V 45mAh Lithium Polymer Battery Rechargeable Grade A Cell Long Cycle Life 201821 3.7V 45mAh Lithium Polymer Battery – a rechargeable lithium-polymer pouch cell engineered by VATS Battery for reliable, long-lasting power in modern electronic devices. Technical Specifications Parameter Specification Model Number 201821 Battery Type Li-polymer Battery Size 1.3×18×21mm (T×W×L) Nominal Voltage 3.7V Nominal Capacity 45mAh Charging Voltage 4.2V Cut-off Voltage 3.0V
