Building a car jump-starter power bank from 8 tabless Ampace JP40 cells

Built a 48V LiFePO4 battery for the family e-bike myself — the whole process on record, in a mere 30 minutes of video

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

Hand-building FPV drone packs, part 1! Not easy to make

AWithZ P30C spot welder — now I can build my own 21700 power packs

Cells dead after two years without charging — repairing a Xiluopu scooter Li-ion battery

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

Never serve low-end customers — deep down they don’t recognise your value

AWithZ spot welder gears 1–5, weld quality test

Episode 183 | When you want nothing and nothing matters, what do you do? Keep sinking, or look for something that makes you happy and try to cheer up! Life is just an experience — make sure you enjoy it