Capable of running off of a 110V or 220V outlet or 12V car battery. Oil and water free & bulid-in fan cooling. Attach the fill whip to the equipment. Fill the equipment to the recommended pressure. Disconnect the fill whip from the equipment.Less cost than the comparable other Mini Compressor? Oil free / water free? Comes with transformer so it can be plugged in the wall? The item "12V Portable Pcp Air Compressor + Transformer High Pressure Compressor Air Rifle" is in sale since Tuesday, September 3, 2019. This item is in the category "Home & Garden\Tools & Workshop Equipment\Air Tools & Air Compressors\Air Compressors". The seller is "kunding01" and is located in Azusa, California. This item can be shipped to United States.