The Monster 12/24V Wheeled Booster Pack, No. MST8824, offers two 24 amp-hour batteries capable of delivering 5,000 peak amps in 12V mode and 2,500 peak amps in 24V mode. The MST8824 offers a digital display for battery charge state, and it includes a reverse polarity alarm for maximum safety. The MST8824 is equipped with pure brass clamps, an LED worklight and pure copper 1/0AWG cables. This booster pack also comes with a 3.8h smart charger.