I used to be in Jiangsu, and what I replaced most was carbon brushes on grinders — 100, 125, 150, three sizes of grinder, sitting on a stool made from an electrode reel swapping brushes from morning till night. Thanks for reminding me of the lean years

A brand-new Dayi angle grinder is only ¥80-odd

What a niche line, 'original battery, or one I make' 24k

Watched your videos for a few days and now my Bosch impact drill broke

Hardware Conan

Hanlin Huafu? Is the creator from Zhangwu?

No offence, I'm a girl, don't roast me, I genuinely don't know — once the pack is assembled and runs flat, can it be recharged?

Original battery or hand-built? As long as it works. Hand-built one (what does that tell you, that the original isn't as good as hand-built)

Honest price, I'm tinkering with my own right now

From work experience and my own battery DIY: better not to stick paper on the sides of the cells, it fails easily once wet, and this paper absorbs water — it gets soggy even in humid weather. If you must, use PET; honestly not sticking anything is fine, the housing's protection and insulation is more than enough, and it's ventilated so it dries easily. @BiyanXiuGongju

I have an immature idea, not sure if I should say it! I'll open a repair shop too! And take whatever comes in to him to fix!