I bought this for a wheeling trip and wanted to make sure I could air back up after. Went from 10 psi to 35 psi in less than 2 minutes. Air gauge not accurate at all, I just had someone in the Jeep checking the dash. It does get super hot, not hot enough for the auto shut off. Aired up two Jeeps at 35 psi and 40 psi with no problem.