CONDITION: Used for 8 months with koowheel during summer and winter.
Stayed in the garage for ~1.5 years from -15 to +30.
I found it at 25volts. Was charged to 46v.
Cells are 4.6-4-3.
PROBLEMS: It doesn’t seem to stop charging at the right voltage.
(Is it because of unbalanced cells?)
If I do motor detection, the motor just stutters, Vesc shows a pink light and shuts off.
After that the battery is at 25v.
(Goes right back up if I plug the charger, so some sort of bms safety feature?)
The bms is unknown for me, I seted a 30bat draw, it should be capable of that?
All in all I would use it in a quick and dirty second build, so I don’t expect much, but also not sure if I should use this battery at all. What do you think guys?
well I would use the carcass, since it makes very easy to work with, on the other hand, If I would be buying new cells, going 10s3p would make a lot more sence, for not a whole much more buck, on a third hand, the build would not be quick and dirty. Well eventualy I think I would build it up to be a decent ride.
either disassemble all cells and check them all individually (charging, IR, high/low discharge check + checking temps while doing that and at the end a capacity check) than you could use the left cells for various non critical applications but I wouldn’t recommend esk8 with them.
Lights, DIY power banks, electronic projects may applications for probably damaged but still OK leftover cells.