The M12 Power Source, compatible with all M12 battery packs, features a 2.1 Amp powered USB (Universal Serial Bus) port that charges tablets, smart phones, MP3 players, and other portable electronic devices. This smart-charge port identifies the electronic device being charged, delivering fast, safe charging. The adapter features an on-board fuel gauge, and is compatible with all M12 battery packs and all M12 heated gear, providing up to 6 hours of continuous heat on a single charge. Bare tool - battery and charger not included. No. 49-24-2310: Voltage: 12V, Type: Lithium-Ion, Outlet: USB, Warranty: 1 Year, Pkg Qty: 1, Package Type: Clamshell