STANLEY J309 Jump Starter (300 Amps)Desulfation technology12V & USB outlets to charge personal electronicsHigh-powered LED rotates 270deg Reverse-polarity alarm alerts when there is an improper connectionPower & charge indicatorAll-metal powder-coated clampsBuilt-in 120V AC charger recharges unit with standard household extension cordETL listed300A instant-starting power600A peakENERGY STAR(R)Digital technologyInteractive packagingJump Starter (300 Amps)