Fixing a fan’s laptop battery that died in storage

Fixing a dead laptop battery for a follower

Repairing a Philips shaver with a new battery so it lasts another 10 years. After years of use it died a few minutes after charging; now with a higher-capacity cell it runs twice as long as new

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

Flyco clipper battery died, replaced with a portable spot welder. Dug an old-stock Flyco clipper out of the warehouse, battery gone, needed new cells; none of the flat-top cells I bought reached 400 capacity, so I had to buy button-top, which have plenty — fitted them, and it now runs twice as long as new. The portable spot welder works great too, welds very solid

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

Repairing a Boda cordless drill: new Li-ion cells, spot-welded pack assembly. A friend was about to throw out a dead drill — both batteries dead, the drill dead too, only the charger worked. I fixed it, so I’m not giving it back, I’ll use it myself

Flyco shaver battery swap — a brand-new shaver gets a bigger battery first, so one charge lasts more than twice as long

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