Kieran973 wrote:1 QC, 37 L1/L2 (this QC must have been done by the dealership because I've never done one. And I've also only L2 charged it 16 times, and L1 charged 0 times, so the dealership must have L1 or L2 charged it the other 21 times. Kind of a lot of charging events for a car that only had 7 miles on it when I bought it).

Do you have a timer set? If so, then every plug in followed by a charge later generates 2 L1/l2 charge events.

1. That SOC reading - is that of the usable or the nominal capacity? 15.2 kWh remaining/.388% SOC = 39.175 kWh of actual capacity. So is that what I have? If SOH is actual capacity/40, then my SOH should really be 97.9%. If SOH is actual capacity/38.5 (the alleged true usable capacity of the 40 kWH Leaf), then my SOH would really be 101.75%. On the other hand, if my car currently has 39.175 kWh of capacity, and it has an SOH of 99.35%, then it should have started with 39.43 kWh. So I'm obviously missing something about the math here...

SOC in LeafSpy is nominal. The dash is usable capacity (with an extra buffer at the bottom for some model years).

kWh in LeafSpy is an undocumented internal value in the BMS multiplied by a fudge factor that seems about correct. Don't get your hopes too high. It does seem to be mostly correct, but getting math to work out to better than +/- 3% isn't realistic.

2. The discrepancy between that SOC reading and the Leaf's dash SOC is 8.8%. This must be the roughly 10% that the Leaf BMS software hides from you. But that 8.8% hidden amount is of what original number? 40 kWh? 38.5 kWh? This is another way of asking: how many kWh does Leaf Spy say I have, and how many kWh does Nissan say I have?

The difference between the BMS SOC and the dash SOC will vary with charge level. There is a top and a bottom buffer. At a full charge, the BMS will say something like 93% and the dash will say 100%. The dash percentage will go down faster, at 10% dash SOC the BMS SOC will be around 20%.