This item is REFURBISHEDThe Schumacher’s SL1596 2500A Rugged Jump Starter and USB Power Source features a more powerful 2500 Amp and a robust new design with powerful performance, giving users the ultimate in versatility. With this model, users can jump start a vehicle, charge their devices, and light up their work area. Pre-Boost technology delivers a breakthrough advantage by safely adding a pre-charge to deeply discharged batteries. It also innovates with its Pre-Heating technology that warms batteries in extreme cold, great for ideal starting conditions.