I drove the car down to one bar today (displayed 8 miles of range) and then L2 charged without a timer until it completed a full charge. The SOC on Leaf Spy still only shows 92.4%. When I was at 15 miles of range and 3 bars Leaf Spy showed the SOC at 30% and ended at 22.4%.nlspace wrote: ↑Thu Feb 27, 2020 5:40 pmShe has at least 2 cells that are lagging all the rest by ~17mV, cells #17 and 80, plus there may be others, but those stick out as easiest to see.
The cells may be defective, or maybe they will balance back up to the rest, but as long as they lag then the average voltage will be pulled down and the range will be affected (as observed).
i would recommend to drive the car down to a really low level, such as 1 bar on the "fuel" gauge, then take another screenshot of the cell voltages. This should show a bigger voltage difference if there is a defective cell. Then charge on L1 or L2 and let it go until it stops on it's own--no timer. This will allow the balancers to do their job for as long as possible. But a defective cell(s) can't be brought back into balance. Good Luck hope you get a new pack if the cells are bad.
Any thoughts on why a full charge is still only showing as 92% SOC?
Cell #17 is still lagging by 14mV and has not been brought up by balancing. It is causing the overall and average voltage to be held down, and this is why it indicates only 92% SOC instead of something closer to 100%.
I agree. The 90% "rule" (more like a guesstimate) applies mainly to EV newbies. When you've lost 1/20th of your range, it will become apparent in at least some situations.I am curious to see if the 90% SOH rule holds on our second Leaf, as we are already experienced drivers. My guess is that I will start to feel it below 95% this time.