Universal step-up and step-down converter
Best PCB prototype ($2 for 10 boards): https://jlcpcb.com
Download archive http://www.kit-shop.org/zip/pov.zip
Buy DC-DC step-up inverter http://got.by/2jhb9r
DC-DC step-down inverter http://got.by/2jhbd9
IRFZ44 http://got.by/2jhbpi
UC3843 http://got.by/2jhbrn
600pcs resistors http://got.by/2jhbvc
7812 http://got.by/2juj3c
Capicators http://got.by/2juj4w
The video Li-ion battery • How to assemble lithium-ion battery
Facebook / kasyan-tv-139150916827430
Russian version • Повышающий/понижающий преобразователь...