Milwaukee 49-24-2371 Power Source, 18 V Battery, 500 mAh

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 hrs of continuous heat on a single charge with an XC battery pack.