Looks like your battery capacity needs updating, what is its current value (in Ah)? There are ways to calibrate the battery in one go if you don’t want to do this gradually.
I'm usually using CanIon when i'm connected to the obd2 device, so I don't have a solid timeline of the Ah reading while I've owned this car, but just a few minutes ago I got 28.8 on OBDZero.
I've been hesitant to speculate as to whether there was going to be anything else worth getting back into place with the battery, since I've seen well beyond my expectation occur in terms of the one suspect cell measurably returning to equivalent margin of error that the rest of the cells have been hovering at between when I bought the car and today. I fully expected I'd have to crack open the module and manually swap out (if I found a worthwhile replacement) cell 7, or at least manually charge it to a desired voltage before linking it back into the series, which would have been a substantial auto repair oriented moment in my life.
Less than that, but another speculation that had been proposed here, which I think you participated in the thread of, was the task of setting up a can bridge (if the case was that the cell reading was simply a sensor error) which would be a little more up my alley, since I only bought this car after a long history of electronics tinkering and repair, which segued into buying and restoring a fully electric moped, which was a crash course of its own in battery maintenance anywhere near the caliber of even a small EV.
If, right now, my cheap-as-all-get-out purchase of a MiEV that was charging to 11 ish miles of estimated range was still charging up to that abysmal state but otherwise showing no signs of serious degradation, I'd be putting some consideration into manually calibrating the battery as a semifinal resort, or would maybe otherwise put an arduino into a hardy, life-in-a-car-proof-ish shell with a little code that makes it spoof what would hopefully have otherwise been an accurate measurement if not for a presumed sensor malfunction. That said, for some reason, as circumstance in that "mean time" period I was calling it before inevitably doing one of those things or more would have it, treating the car like I have has both covered every base I have needed in the driving portion of my life, while consistently showing me unexpectedly good results.
Between my last comment and tonight alone I've been using the car to drive to work and back consistently, and get an estimated range between 45 and 55 miles, with a top SoC of like 98%. I'm feeling a bit confident (but hopefully not to a fault) that the voltage range which started between .28V and .35V and is now hovering around .04V will eventually reach the lowest it can possibly hit within a month of properly driving and charging.
Next spring I'll get the moped's battery series in after manually parallel balancing them all, and will be so happy to be dealing with just 72V this time.
Attached are screenshots of tonights Ah page on OBDZero, tonight's Battery State page on CanIon, and an older screenshot of the same page (early October of this year) to highlight the difference in Voltage range between then and now.
