1 Don't do this! (There's a much safer way)
Big Clive looks at cheap single-cell lithium charging and protection modules, often linked as a caution against bad wiring and to explain which terminals go where.
Topic
bms
5 videos. Ranked by independent recommendations, not by views.
2 BMS (Battery Management System) || DIY or Buy || Properly protecting Li-Ion/Li-Po Battery Packs
GreatScott's video is a frequent starting point for learning what a lithium battery management system does, how cells get balanced, and how a homemade one compares with a bought board.
3 Build your own portable POWER STATION (1200w, USB-C and MORE!)
A build walkthrough for a large 18650 power bank with a BMS, often cited as a clear example of how such a pack goes together.
4 EBike Battery Pack || DIY or Buy || Electric Bike Conversion (Part 2)
Suggested for anyone weighing up a home-built lithium ebike pack, as part two of GreatScott's conversion series covering cell arrangement, balancing and cost against buying.
5 Make your own Li-Ion Battery Pack
Suggested as a practical GreatScott guide to building a lithium-ion pack, including how a three-cell setup wires its protection board and balance leads.
