The portable stick charger with a built-in Li-ion battery, which can charge mobile devices like a smartphone. As the USB cable is embedded with the unit, it is so easy to carry around. The body has a good enough strength and the recyclable materials are used. This simple and slim design would never be boring for everyone and be easy to be brought in a pocket of the bag. In daily life, this can provide the energy to a smartphone whenever you feel the battery shortage on the go, and also it is very useful in an emergency to support the lifeline.