How to make a Lithium Ion Cell Charger (18650 Cells Charging Grid)

Premium quality PCBs: In this video I am going to show you how to make a 18650 lithium ion cells charging module/grid. This cells charging is custom built to charge the most popular lithium ion cells that are 18650 cells. I have used tp-4056 boost converter units that are specifically made to charge these lithium ion cells. Each unit is made to charge single lithium ion cells so I am going to use eight of them for each module along with two cell holders each of which can hold up to