The Schumacher Electric ProSeries 4000 Peak Amps 12V Lithium Portable Jump Starter, No. DSR164, features a heavy-duty design and dual internal lithium batteries that deliver 4,000 peak amps of power, enabling the device to jump start 10-cylinder gas or diesel engines in the shop or on the road. It incorporates both pre-heating technology for jump starting in cold climates and pre-boost technology for deeply discharged batteries. It also offers a front-facing work light with three lighting modes, and is able to charge USB devices. Includes 4-gauge, 30" copper cables, AC wall charger, 12V DC car charger, and a user manual.