Hotronic XLP 1P BT Power Set (battery packs and recharger) for XLP Heat Socks. Powered by high capacity, lithium-ion Battery Packs, Hotronic’s Heat Socks XLP ONE offer three (3) base level settings for comfort and warmth maintenance while Boost Setting 4 offers an extra blast of heat when needed. Bluetooth compatibility allows you to control the battery power level via phone app.

High-performance, low-weight Li-ion batteries in a compact design. Output: 2200 mAh.
For use with Hotronic/Boot Doc Heat socks.
Controllable via Bluetooth and heat app.
Constant heating power.
Battery pack LEDs indicate power on or off status and selected heating level. Lights blink when heating level four is selected to run continuously.