SageBrush said:
A charge to full from VLB will give you a kWh result from the meter. Some home EVSE products have metering built in, or you can use a commercial charger, e.g. ChargePoint.
At 6 miles per kWh or better, it only takes about 16 kWh to travel 100 miles so that is no proof that LeafSpy is reporting correctly. Of course you may not want to know, which is fine too. Just beware that you may be in for a surprise come winter if you live in a 4 season climate.
Just got an opportunity to get some stats on my battery today:
Assumptions:
100% = 21.6 KWH Assuming 10% safety buffer (5% off top and bottom of 24 KWH total advertised capacity)
1% = 0.216 KWH
Conditions:
VLB warning < 8m (1.9 KWH), remaining ~2m downhill with coasting regen ~ estimating ~1.5 KWH left before charging started. I let it sit for 3 hours for outside temp to come down (got car covered by the shade) and use it as an opportunity to rebalance cells at low voltage.
Result:
JuiceBox-garage | 8/5/2018 4:45:09 PM | 8/5/2018 8:34:42 PM | 03:49:33 | 20.005
My charger is 93% efficient and reports the amount of energy received by the car, not including its own inefficiencies into reports.
Total charged: 20.005 KWH
Total capacity: 20.005 + 1.5 = 21.505 KWH
Capacity loss after 30K: 21.505 - 21.6 = -0.095 KWH (-0.43%)
LeaSpy reports 287 GIDs that is 102.1% rated capacity; SOC: 96.9%
Nissan estimates 2% capacity drop for every 10,000m. AFAIK, it looks like the battery is holding up exceptionally well so far.