The M18™ Power Source, compatible with both M18™ Compact and XC™ Battery Packs, features a powered USB port to charge cell phones, mp3 players, digital cameras, and other portable electronic devices. This adapter is also compatible with M12™ Heated Jackets, providing up to 18 hours of continuous heat on a single charge with an XC™ Battery Pack. MILWAUKEE HEATED GEAR M18 ADAPTOR