Emergency micro powerbankAug 08th, 2019 | by: Manuel Bonomi
Category: Electronics Basic Circuits
We all know that our smartphone's battery is always out of juice when we really needed it, for example to make an important call or, in the worst case, to call for help or rescue. So, I designed and built a tiny and lightweight powerbank in a mint box that you could attach to your keys or throw in a pocket and it will be always ready to charge a little bit of your phone's battery.
If you are curious and you want to learn more about it please check the project page on my Instructables profile! There I explain step by step how I built it and how it works.