Savior Heat Spare Battery Rechargeable for Heated Products 7.4V 2200MAh/3000MAh

Capacity: 2200MAh / 3000MAh(Spare battery). Not necessary. The current battery technology is mature, and battery life will not be affected. There is indeed only one sock, because this sock is mainly used to wrap the battery, protect the battery, and prevent collisions.

SAVIOR HEAT 7.4V 3000mAh Li-Polymer Rechargeable Batteries for

Spare Batteries Motorcycle Heated Gloves

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SAVIOR HEAT 2200/3000MAH Rechargeable Battery For Heated Gloves

Extra Battery for Heated Jacket Gloves Socks - SAVIOR Heat

SAVIOR HEAT 7.4V 3000mAh Li-Polymer Rechargeable Batteries for