I bought this and another compressor/charger at the same time to see which product is better. The charger aspect is a bit confusing, the picture in the description shows the phone charging through it. Note, however, that there is no USB-A port to which you can connect a regular charging cable. There's only one USB-C slot, so you'll need a USB-C on the other end you want. It was annoying, but not the end of the world. The charge delivered is just a gimmick though - I connected a 25% Galaxy phone to it with a fast charge cable. A message popped up on the phone to check the cable connections, but it was plugged in and charging - it said it would take 4 hours and 58 minutes to fully charge. I tried the same phone with the same percentage and cable, plugged into a different charger/tire pump. He said that a full charge in 1 hour 25 minutes. I even tried 4 other cables to make sure there was no problem with a particular cable and got exactly the same result with all the others. To be honest I haven't tried the air compressor aspect so I can't give an opinion on that, but for the same price I've found that there are other brands that can offer the same air compression ratings but with normal loading capacity levels. so this one doesn't fit as promised.