Make the Simplest 2S Li-ion (18650) 8.4V charger from 2 old chargers

How To Get: Free 18650 Lithium Cells From Dead Laptop Batteries
= https://www.youtube.com/watch?v=uEJWTqv14Cg&t=191s
how to make free 3.7V 2000mah Li-ion Rechargeable Battery from old Phone Batteries = https://www.youtube.com/watch?v=CzL4fd9pN8w&t=386s
Making a 8.4v 4400mah 2S 2P 18650 Battery for my Emergency Light = https://www.youtube.com/watch?v=GCsm_8quLu0&t=114s
Making a Super Powerful Battery 4S 14.8V 3A For my Cordless Drill
= https://www.youtube.com/watch?v=KI4LnEHSils&t=180s

Видео Make the Simplest 2S Li-ion (18650) 8.4V charger from 2 old chargers канала IsDeno24