RegGuheert said:
I do believe cell-pair #37 is a bit weaker than the rest, but that didn't stop me from driving over 69 miles last Friday and arriving home with 34% charge remaining. So while the car's instrumentation is reporting a loss of 16% of the original capacity and a "Health" of only 70%, I'm achieving best-ever (by quite a bit) trip performance out of the vehicle. (And, yes, I understand there are many other factors involved!)
Coincidence or not?
I saw a weak cell flagged by LEAFSpyPro and it was cell pair #37.
Here's the screen shot
https://photos.app.goo.gl/LG8qisJ2DtimBDvY6
Lots of cell pairs shunting. Lit up like an xmas tree
The day this occurred I drove from a fully charged battery (topped off at work using a L1 EVSE) down to 1 mile past LBW, 68 miles in total. I lost about 15 GID's in the time I'd normally use 7 or 8 GIDs on the final approach home (it takes 8 GID's from McDonalds to my house, that day it was double). I have only driven the new Lizard pack down to LBW maybe twice since getting it 18 months and 22,000 miles ago. I rarely go below 40% SOC. Charge to 80% overnight and add 10% directly prior to leaving the house.
Is it known if a 2011 LEAF with Lizard pack re-balances with a single charge like the 2013 packs or is the BMS the same as in the original?
I'm going to assume this was just pack imbalance and not a faulty cell. But if the same cell pair comes up repeatedly I will ask the dealer to test the pack for faults. I have 34,000 miles warranty left on the new pack.