Vector's Jump Starter provides enough power to jump-start almost any vehicle. This portable, cordless, rechargeable unit features fully automatic 3-stage charging. The Rapid Start Charge delivers charging amps to any 12V battery; Absorption Charge maintains maximum charge at a constant, safe, predetermined voltage; and Top-Off Charge maintains voltage/adjusts current. Other helpful features include a reverse polarity alarm, powerful emergency worklight, 12-volt DC charging cord, and 27-inch heavy-duty welder-type cable and nickel coated clamps. It is powered by a high-density 19 Ah, sealed, non-spillable battery, and the recharger runs off a 120 volt outlet.