So my son and I bought this cool little gadget the other day. Ryobi had just dropped this new little compressor and I wanted to see if it handle the airing up of the Powerwagon tires. We take a few of the Ryobi 18 volt tools when we go camping so I plan to have the batteries and charger with me anyways. It also gave me an excuse to upgrade my batteries to the bigger, 4Ah ones.
It's got a tiny little one gallon tank and takes 30 or so seconds to fill itself up to 120psi. It's fairly quiet. I'd say a little quieter than the portable 12volt Viair or ARB. My test was seeing if it could pump up one of my 35x12.50 r17 's from 30psi(what I usually air down to on the trail) to 60psi(what it takes to get the TPMS to stop yelling at me). From full, it took 1:20 to get to 45psi. Thats about where this thing starts hitting it's wall. Once my tire got to 50psi it just seemed to sit there. I stopped airing the tire and let the tank fill. It took 2 more bursts to get the tire up to 60psi.
I ran the test twice and the battery shows a 3/4 charge so it's possible it'll make it through all four tires. If 30-35psi is your street pressure this thing is perfect. 60psi......ehh it'll work but nothing amazing. I think I'll keep it around the shop and I'm curious if playing with the output regulator can help.