Emergency Mobile Charger using AA Batteries [ At Home Project

 

Looking for a way to charge your phone when you are completely out of options? Make yourself a portable mini power bank completely from scratch which could come handy especially while traveling or while outdoor camping. This is a hobby project which can be made by anyone following some very simple instructions. The mobile charger works by reducing the voltage of the 4×1.5V AA batteries to 5V using a voltage regulator IC 7805 since the voltage required by a phone is 5V for charging.