Make a Power Bank

First of all start by buying the components :

power bank circuit : https://amzn.to/2QHgxKu

voltmeter : https://amzn.to/2y4rEXs

watch the video and share it with your friends

I made it easy for you guys and I made the design you just have to print it

Get your hands dirty and do the soldering hahaha

here is the diagram as simple as it looks and don't forget to connect the negative of the batteries to the negative of the circuit

and the positive to the positive

whatchout from the reversed polarity !!!

Congratulations !!!

now you just made your own Power Bank