502040 3.7V 400mAh Lithium Polymer Battery Rechargeable Grade A Cell Long Cycle Life 502040 3.7V 400mAh 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 502040 Battery Type Li-polymer Battery Size 5.0×20×40mm (T×W×L) Nominal Voltage 3.7V Nominal Capacity 400mAh Charging Voltage 4.2V Cut-off Voltage 3.0V
