The PowerMax PM3 Series converters 110Vac power to 12Vdc power to charge a battery and/or power 12V equipment. With our state of the art 3 Stage Smart Charging and adjustable power supply modes, the PowerMax AC to DC power converter/battery charger is engineered with the user and variable environmental conditions in mind. They will fully charge and maintain any battery type while providing very clean DC power. Ideal for use in RV, Automotive, Boat, Car Audio, or any applications where battery charging and/or 12V power is needed.