Compact, lightweight 12VDC booster pack built to safely and reliably handle 12 volt automotive crank-assist applications. 1,700 amp peak amp battery power for quick, starting power – works on even deeply discharged batteries. Also suitable for use as a temporary power supply for automobiles and 12V electrical devices. Powered by a sealed, non-spillable, "pure lead" AGM battery rechargeable via 120VAC charger (included), 12VDC adapter (included), or from vehicle alternator. 30" 4 gauge clamp leads are detachable via heavy-duty brass sockets for easy field replacement of cables.