I bought this pump to replace a cordless pump that got lost in my gear bag during a trip. I really liked it but the build quality is a little disappointing. So I did some googling and settled on this one. I mainly use this for my e-bike. Love the fact that it has a bigger battery and definitely fills my tire faster than the old one. It also doubles as a backup battery for my phone, which is a plus. The main reason I give it 4 stars instead of 5 is that it attaches to the tire to inflate it with air. Instead of the standard quick-release connector you see on almost every other tire pump, it's a screw-on connector. It's a lot harder to attach to the tire, and then you lose more air from the tire when you unscrew it to remove it. I have no idea why they chose this method of attachment to the tire. No other pump I've ever bought connects like this, and with good reason. If they update the product to include the standard quick connector I would give it five stars (assuming they send me one lol). If not, this is a 4 star product in my opinion. Another minor complaint is the length of the included USB cable and the fact that no power adapter was included for the USB cable.