Keep your feet warm longer with extra batteries for ThermaCELL Heated Insoles ProFLEX. With extra batteries charged and ready, you can work or play outdoors all day in comfort.

Includes 2 rechargeable lithium-ion polymer batteries, 1 USB cable, 1 wall charger, and 1 smart charging case

Batteries fit ThermaCELL Heated Insoles ProFLEX

Each charge lasts up to 5 hours

Batteries charge in 4 hours or less

Use wall charger (included with ThermaCELL Heated Insoles ProFLEX) or any USB port to charge

Wall charger wires disconnect so charger can be a carrying case for batteries