LV3
Blind Tool Repair ep. 37, ‘batteries — can’t repair them but can build them’: a hot-glue gun that won’t heat is a loose wire; a customer asks original or home-made battery — a 15-cell tool pack built on the spot, 3.95V per cell, ¥130; then a stripped screw, worn carbon brushes, a tripped breaker, 607/608 bearings, ¥40 housing; 320k likes
A customer’s hot-glue gun lights up but won’t heat; open it, a wire has come off, stick it back, nothing wrong. Another wants a battery ‘delivered to Hanlin Huafu’ and asks whether to use an original or have me build one — ‘whichever works’; take 15 cells, open the cover, beautiful; measure a single cell at 395 (3.95V); pack assembled, done, ¥130. Then: a stripped screw inside a drill, apply some tricks (scorching hot; I have a way to fix it, done in the open, no secrets); an angle grinder won’t turn, the carbon brushes are worn, and the breaker tripped again (protecting the motor); another one also brushes and a broken wire, brushes are aftermarket not original; bearings are all gone, housing ¥40, bearings ¥10, swap in 607 and 608 bearings; ¥10 each. 9339 comments: top comment ‘original battery or one I make’ at 240k; ‘original isn’t as good as hand-built’; experienced viewers advise not to stick paper on the cell sides (absorbs water), use PET; someone asks whether the assembled pack can be recharged.
Ep. 37 | Batteries? I can’t repair them, but I can build themProjectsBlindFix