This convenient and versatile 12 volt air pump comes equipped with a 120 volt ac charger and a 12 volt charger that plugs into cigarette lighters. When charged,there are no cords to deal with. It's equipped with 3 adapters to fit valves on towables,pool toys,airbeds and other inflatables. It will inflate or deflate continuously for 15 minutes on a charge. Peak air pressure is 0.64 psi and draws 11.3 amps. We recommend topping off towables inflated with 12 volt pumps with few strokes of Airhead's Double Action Hand Pump or Foot Bellows Pump.