STANLEY PPRH5 Professional Power Station Jump Starter: 1000 Peak/500 Instant Amps, 500W Inverter, 120 PSI Air Compressor, Battery Clamps Delivers serious jump-starting power with 1000 peak amps and 500 instant starting amps Reverse polarity alarm alerts when there is an improper connection; Connect the clamps to the battery, turn on the switch and start your vehicle Features a 120 PSI air compressor to help inflate tires with low pressure; High powered LED light allows you to work in the dark USB port provides portable power for electronic devices; Meets ETL safety standards for performance and safety Charges using a standard household extension cord (sold separately)