alt Hacker NewsDid you look inside the old battery? It may well be just a bunch of 18650 cells with some electronics in a plastic case. Just desolder the old cells and solder on new ones.
I did the same for my wife's cordless vacuum, and it works better than new, because the new cells are about 2x the capacity of the originals.
Replies
miniwark • last Monday at 11:39 AM
Lets go with the usual reminder: de-soldering / soldering Li-ion cells can be super dangerous. With a bit too much of heat it can fire or even explode...
➕ show 2 replies
This is only good advice if you're good at soldering and know details about cells like which ones have in-built protection.
Otherwise you're just creating a fire hazard.