Totally dead lithium batteries
Added 2024-06-05 16:37:57 +0000 UTCMy fault entirely, for getting these with a tool and then losing them for a few years.
When cells are self-discharging it indicates that there has been an issue with the electrical separator inside them.
The charge circuitry is a bit weird. They've used a control chip designed for a negative charge input, but added circuitry to adapt it to positive charging.
Comments
Just replace the bad cell.
Jonathan Hughes
2024-06-06 10:00:01 +0000 UTCWhen I first picked up one of the $30 alibaba specials, I couldn't find replacement batteries... because apparently most of the cheap knockoffs just steal the Makita battery design and everyone already seems to know that :-) (ran for casual yardwork use for another couple of years with a knockoff-makita battery, though as of a month ago it no longer starts up.) Kind of funny that we got a little bit of standardization in the battery space, by simple theft :-)
Mark Eichin
2024-06-06 07:38:53 +0000 UTC
