The Hotronic m3 PowerPlus Battery is Hotronic's most compact battery. This unit is fully compatible with all prior Hotronic heating elements so you do not have to reinstall any elements. It requires the new m3/m4 charger.
Features:
- Powered by high capacity, cold temperature operation, NiMH cells.
- Four (4) temperature-duration settings.
- Settings adjusted by easy to use, push-button controls.
- Easy-to-read battery pack LEDs indicate setting selected and power on/off.
- Battery packs easily attach to secure area of footwear.
- Battery packs m4 contain four (4) cells for extended duration.
- NiMH cells do NOT have "memory effect" and do NOT require fully discharging before fully recharging.