The Cornwell All-In-One Jump Pack, No. UPG80439, features an internal air compressor capable of inflating an automobile tire in 10 minutes, heavy duty metal battery clamps rated 400A, and a battery status indicator to signify the charge-state of the internal battery. Other features include a pressure gauge and an on-off switch on the outside. The pack's compressor is thermally protected from overheating, and the clamps are insulation coated for spark resistance, according to the company.