One (or both) of the ingenious Geekuria Youtube Channel editors (Evgeniia and Rénald) is an e-cig user. They needed a charger for an 18650 battery that they could take along on the road and charge with a USB battery. So they decided to build it themselves. This video shows how to make your own 3D printed USB battery charger.
January 9, 2018
September 6, 2016