‹ AWithZ Academy
Lithium DIY safety
Before welding / while welding / after
Lessons6 lessons
1
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Avoid the pitfalls in 1 minute! Beginners buildiDouyin · H2
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00:323[DIY] AWithZ U3 Pro spot welder — hand-building Douyin · U3 Pro
02:174⚠️Soldering cells with an iron can damage them? Douyin
00:575Battery pack assembly made easy — safer and moreDouyin · U3 Pro
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00:22
Safety checklistMust read
Before welding
- Use matched, healthy cells; never mix old and new.
- Insulate the positive terminal with barley paper and fix the holder before welding.
- Press the pins firmly, keep surfaces clean, and test on scrap first.
While welding
- Two spots per strip, even welds without sparking; lower the level if they darken.
- Keep the nickel strip off the neighbouring cell's negative terminal to avoid shorts.
After
- Always fit a BMS and wire the balance leads in series order.
- Watch the first charge; measure every series voltage before heat-shrinking.
Full guide: lithium DIY safety ›
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