Building a 24V Li-ion battery from 16 × 32140 cells

0.2 copper straight onto a Jiashikai negative — I’m telling you, don’t try it! It just won’t hold…

This lesson is all detail for beginners — the chapter of the hand-built Li-ion course that keeps you from getting blown up, bro! Old hands, now it’s your turn to roast me

A follower asked whether the AWithZ UF20B can weld copper stacked directly; I said probably not, he said support says it can with flux. Fine — if you don’t believe me, don’t ask me again, the video is right here, see for yourself. The welder is the AWithZ UF20B from my showcase, upgraded No. 6 welding pen: copper straight on vs copper on a nickel base. Also found some followers haven’t even figured out nickel base layers… mainly I turned the power bank into a 30000mAh one, and it’s a joy

AWithZ spot welder gears 1–5, weld quality test