Barbuda Cottages
New Member
- Joined
- Mar 24, 2020
- Messages
- 21
Amy had sent a few videos before shipping showing voltage and internal resistance of all the cells , I don't remember seeing one that was that much different , I'm going to take another look at the videos to see if I spot anything .+100
Suspect that one didn't get processed like all the others OR it has very high IR. If they discharge them to a target voltage, and that is high IR, I wouldn't be surprised by a voltage bounce. Cell could be fine, but if the terminal wasn't properly fastened, it hit target voltage sooner than it should and bounced.
So tempted to test that one cell....
That one cell is likely at dramatically higher state of charge than the others meaning the usable capacity of that 16S battery is dramatically lower than the other due to absurd inter-cell imbalance.
I would take that one and the 15 other highest cells and set them aside. Leave those 16 wired in parallel together for an entire week. That would get them within 5-10% of each other. Build the battery and add it in parallel to the other 9 when they are at similar voltages.
Going to take your suggestion and set up the 9 banks of 16S and set aside the highest 16 and set them up in parallel for a while to see if they balance out .