I normally use a small HF pancake compressor almost exclusively to inflate tires around the farm and house, but it can almost never inflate a tire on one charge and then I have to wait for it to build up to finish, so when my neighbor needed to borrow my compressor, I just told him to keep it, that I was going to get something more feasable. So, I went to HF, since i'd had good service from the compressors I'd got there, I just kept giving them to kids and neighbors, when I spied the Bauer inflator. I'm thinking that the only thing I ever use a compressor for is tires, why not try it. I went online and found an ebay auction for 4 Bauer batteries of different sizes and in good condition, with the charger, so I bought them and went to HF and bought the inflator. It works like a charm. You just set the pressure you want, hook it to a tire and turn it on and in a minute or two, wallah! The good news is, I really didn't care it it was right on with the psi I set, that I could just set it highter and release a pound or two, to get it right, but no need. According to my most used tire gauge, it is dead nuts on, when it stops! It will pump up four low tires, and not even get warm, probably a total of 8 minutes of use or so total. You can feel the hose is warm from compressing the air, but that's it. I was amazed at the quality and how it works, and no need to carry a 20 pound compressor around to each tire, cause this thing weighs like 3 or 4 pounds at most. I looked at similar Dewalt and Ryobi inflators, which the Dewalt was like $200 and the Ryobi was similar in price. If I hadn't found the deal on batteries online, I would have looked to find Ryobi batteries and bought it, but this is how it worked out and I'm more than happy. People can diss HF all they want, but this is not the first thing I've bought there that has been a total satisfaction.