The problem with any 110 volt compressor you could put on your van that would run a 1/2 impact is this: you would need a 20 amp outlet to run it. You will probably be at a dock door with a 15 amp outlet that is 500 feet from the breaker box. It will never start the compressor once it trys to kick on with 80 PSI in the tank. All of my dealer's van have gas compressors. It is either that, or use the breaker bar and the 18 volt impact.
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