Easy-to-use and versatile, the Truck PAC ES1224 switches from 12 to 24 Volts with the turn of knob, all without sacrificing one bit of power. With 3200 Peak 12 Volt Amps and 1600 Peak 24 Volt Amps, the Truck Pac will get the job done. Features ES Series batteries, specifically developed for vehicle starting applications. ES Series batteries deliver high output current, extended cranking power, numerous jumps per charge and a long service life. Also features extra-long cables for ideal positioning during jump starting and industrial grade Hot Jaw clamps for maximum power transfer to the vehicle.