I saw this battery powered inflator at Home Depot today. I wonder if it would be a good alternative to the very expensive ARB or Viair compressors. As long as one has a 110v outlet in the vehicle, only one battery and a charger is needed. The web site says it's rated to deliver over 120 psi, I noticed on the box in the store that it said "Real 120 psi".
Milwaukee Inflator
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Not a bad idea, really, if you already have the charger and at least two batteries for the Milwaukee cordless tool system *and* a 110 outlet. Wonder how efficient it is, duty-cycle wise, or if painfully slow like some are.
Using one of those means, though, having a decent inverter and deep cycle batteries, or you'll kill your starting battery in no time trying to keep that cordless battery charged. If buying the Milwaukee Inflator and a battery and battery charger just to have the Inflator, the cost would be more than twice as much as the capable
ViAir 90P. Add in the inverter so you can run 110 to charge the cordless battery (most compressors for vehicles run directly from 12v or 24v) and the cost would exceed the ARB single.
Also, speaking from experience, anyone thinking it might work to depend on a cordless tool for anything while out adventuring, best to always have at least two larger capacity batteries. When you only have one, it will invariably go dead and stop suddenly in the middle of whatever you're doing. Then you have to wait 'til it charges back up sufficiently to finish your work. I keep a number of cordless tools in my van for various projects when traveling, but personally wouldn't count on a cordless air compressor if I didn't already have other tools and multiple batteries in that brand's system.