I used this on my work car because the tires no longer seal well with the rims and I have to constantly pump air every week or two. This increased tire pressure from 26 to 36 in just over 3 minutes. I was also able to inflate another for tires (one had to go up 9lbs and the others took 4 and 5lbs). He pumped them all up with one load. I didn't even charge it when I got it and it still has enough power to get the job done. It has an automatic stop, so it will stop at any pressure you want. It also has an extension so you can launch it and put it on the ground so you don't have to crouch. It also has a small light that glows. I am happy with this inflator, it does its job!