Jump start 12-volt vehicle batteries. Suitable for cars, trucks, motorcycles, ATVs, lawnmowers, and boats. Works with gasoline engines up to 8 liters and diesel engines up to 4 liters. With the digital air compressor there is no need to plug in. The integrated air compressor inflates tires, for cars, bikes, and sporting equipment. Auto stop when the preset pressure is reached. Quick Charge USB Port and DC port allow you to charge tablets, phones and other electronic devices.