Review on Fumpa Portable Battery Powered Bicycle by John Rivera

this can work to fill up the tire. but if you have a flat tire, it will take time, moreover, this device will burn your hand as it gets very hot when you try to inflate flat tire. As a test, I had to inflate two mountain bike tires from an apartment. I filled out one. In the second, I hit 3/4 before I had to let go of the thing. If you need a portable pump. Just buy one of these CO2 pumps. they are smaller and faster. When you get home, just buy a good floor pump or something like a Ryobi pump for $24. Or just buy a standard double-acting bicycle hand pump. You have never let me down. Oh yes, trying to fill two tires drained the battery to 55% so you won't be sharing that with your friends. you don't need it