Hi all,
I'm kinda new to the whole cell harvesting but have quite a lot of knowledge of electronics and past experience with lithium batteries.
I got a e-bike batterypack (Bosch Powerpack 400 rear mount) which didn't work anymore and got the cells out and cleaned them all. There are 40 LG LGDBMG11865 cells in the pack but 90% of them supposedly have a CID trip. Four cells show a good voltage close to 3V but the other 36 all show 0V. I randomly took about four cells from the 36 and pushed the cover under the positive terminal back in a bit. All four now show the same voltage of about 3.12V and accept charge (tried it for a short time with a low current, no heating and they keep their charge). This makes me think they all tripped at the same time.
1. What could be the cause of this many cells tripping? Could it be possible that the e-bike was under direct sunlight for too long which caused the pack to heat up and trip?
2. What to do with these cells? Are they still somewhat safe to use (with proper precautions)?
Thanks!
I'm kinda new to the whole cell harvesting but have quite a lot of knowledge of electronics and past experience with lithium batteries.
I got a e-bike batterypack (Bosch Powerpack 400 rear mount) which didn't work anymore and got the cells out and cleaned them all. There are 40 LG LGDBMG11865 cells in the pack but 90% of them supposedly have a CID trip. Four cells show a good voltage close to 3V but the other 36 all show 0V. I randomly took about four cells from the 36 and pushed the cover under the positive terminal back in a bit. All four now show the same voltage of about 3.12V and accept charge (tried it for a short time with a low current, no heating and they keep their charge). This makes me think they all tripped at the same time.
1. What could be the cause of this many cells tripping? Could it be possible that the e-bike was under direct sunlight for too long which caused the pack to heat up and trip?
2. What to do with these cells? Are they still somewhat safe to use (with proper precautions)?
Thanks!