USB power banks give your phone some extra juice on the go. You can find them in all shapes and sizes from various retailers, but why not build your own? [Kim] has a walkthrough on how to do just that ...

This article will show you a simple and inexpensive way to make your own portable power supply for microcontroller experiments and the like by hacking a mobile phone power bank. The proposed power ...

With increasing functionalities and high processing powers, smartphones battery backup is reduced over time and a need of portable power bank increased with the time. In this project we are going to ...