STANLEY J509 Power Station Jump Starter: 1000 Peak/500 Instant Amps with Battery Clamps 500 Instant Starting Amps/ 1000 PEAK Battery Amps; Offers both 12-volt and USB outlets to charge personal electronics High-powered LED light that rotates 270 degrees; Reverse polarity alarm to alert when there is an improper connection Power and charge indicator, no Compressor and AC Power; Charges using standard extension cord: Charger/extension cord not included When the unit is not in use, we recommend that the battery is charged at least every 30 days