Review on Fumpa Portable Battery Powered Bicycle by Yung Kitamura

This pump makes inflating bike tires that much easier. It's fast. There are a few things to consider when purchasing this pump. I wear it when I ride. It's not waterproof, so it needs to be carried in some kind of waterproof bag. It's easy to get inaccurate pressure readings if the jet isn't seated firmly against the valve stem. When inflating a tire, hold the tube firmly by the valve stem. In this case, the connection becomes very hot. When charging this pump, it is not easy to tell when the pump is fully charged. After unplugging the charger, you can turn on the pump and it will display the charge percentage.