With 2500 amps, Schumacher’s SL1596 Rugged Jump Starter and USB Power Source has the power needed to jump start engines large and small. Featuring a robust new design, the SL1596 delivers the ultimate in versatility. Users can jump start a vehicle, charge their devices, and illuminate their work area with this reliable and long lasting lithiumpowered device. PreBoost technology safely adds a precharge to deeply discharged batteries and the PreHeating mode warms batteries in extreme cold for reliable charging in extreme conditions.