Class is in session, everyone — the ‘Whampoa Academy’ of the tool world

Can't fix it, but I'll build it — POV hand-made pack

A big power bank this easy? ~¥20 at home

DIY flashlight — 3×18650 + e-bike LED, under ¥20

Unboxing and testing a small handheld spot welder — very practical and handy

Universal magnetic base — step-by-step

The ¥9.9 mini fan I bought last year stopped charging — repaired with one bigger cell, no more runtime anxiety! The same home battery welder as in the video is in my shop window

Lithium batteries, spot welder — I recommend this one, compact and powerful

A ¥25 ‘brushless’ handheld car vacuum bought online — opened up, it really is a brushless motor

AWithZ U3 welder — build your own 18650 pack, tutorial

Sharing a handy DIY tool today: the AWithZ handheld spot welder

Appliance repair ep. 260: vacuum cleaner battery replacement

Spot-welding power-bank cells with the AWithZ portable welder. Spot-welding power-bank cells with the AWithZ portable welder. After long use a power bank's capacity drops. A shame to throw it away; swap in a few high-capacity cells and it works again

A neat trick for welding Li-ion cells

AWithZ portable Li-ion spot welder — building a power-tool battery pack with the AWithZ portable welder

Ep. 127 | Skip one meal and you can own a handheld spot welder — build your own packs at home

Re-celling a 48V Li-ion battery

Appliance repair ep. 258: Xiaomi car washer battery replacement

Once you’ve mastered hand-building Li-ion packs you’ll never buy a power bank again — all the old power banks at home can be re-celled! Haha

Trying the AWithZ small handheld spot welder — if you don’t weld much and want to do some DIY, worth considering

No flashlight repair today — replacing the 18650s inside a Milwaukee 12V battery

[Full reveal] Hand-building a ‘TNT’ C4-style power bank! Do not take it outside

Building a 12V off-grid pack from 18650

Anyone else burned by a power bank? I went for a battery spot welder — power-bank freedom! Totally hooked

Swapping a flashlight battery with a handheld mini Li-ion spot welder. The handheld mini welder is easy to carry and works for re-celling power banks, players and other small gadgets. Solder a Li-ion cell with an iron and the heat raises the pressure inside and can ruin the cell — only a spot welder will do

Handheld portable spot welder, adjustable heat, swappable tips

Compact smart spot welder with a colour screen for adjusting weld mode and strength — makes repairing and DIY-building battery packs really easy