Honva said:
I saw on youtube lately that one guy was test driving the 2018 Leaf from 100% to 0% on a road test. He got the Leaf Spy connected as well. What he found was interesting. At 100% full charge, Leaf Spy showing 38KWh, there is a 2 KWh reserved room for regen. Nissan apparently never charge the battery to full capacity. May be that is why they said 80% option is not needed.
Also interesting is that at 0% dash indication, Leaf Spy still read about 9% power left. Looks like Nissan already designed the charging unit to prolong the battery life under normal use.
Link:
https://www.youtube.com/watch?v=u5DxpaQo7gI
OR... the fudge factor was created because the BMS was simply not consistent enough.
My 2018 LEAF has had a relatively large range of "full" in the near 6 weeks I have had it including one time it charged to 506 GIDs, 39.3 kwh available and 99.51% SOC (this is real SOC...)
The real kicker is at 99.1 % SOC, I was able to regen 9 KW in E Pedal and that was low speed, no real slope regen...
date miles miles/kw SOH ahr Hx GIDs kwh avail SOC notes
2/17/2018 42.5 4.3 99.66 115.05 99.86 491 38.1 96.52
2/19/2018 81.4 4.4 99.65 115.04 99.87 506 39.3 99.51
2/20/2018 128.7 4.1 99.63 115.01 101.98 486 37.7 95.69
2/22/2018 183.9 3.9 99.60 114.98 104.24 497 38.5 97.79 2 QC
2/23/2018 78.4 3.6 99.60 114.98 104.95 497 38.5 97.81 no drive 2/24
2/26/2018 61.7 4.3 99.57 114.94 105.32 493 38.2 97.08
2/28/2018 24.6 4.5 99.54 114.91 106.95 493 38.2 97.05
3/1/2018 99.9 4.4 99.53 114.90 107.91 494 38.3 97.27
3/6/2018 46.4 4 99.47 114.83 110.47 488 37.8 96.07
3/16/2018 127.2 4.5 97.02 114.69 113.59 498 38.6 98.13
3/19/2018 50.7 4.3 96.99 114.65 114.18 487 37.7 96.05
3/23/2018 118.4 4.3 99.25 114.57 115.34 494 38.3 97.51 160 miles driven day before
3/29/2018 127.6 4 99.21 114.53 115.56 493 38.2 97.42