Rxleaf wrote:I bought a used 2014 leaf with approximately 9500 miles back in March for my kid. It had 11 bars.
As we drove the car, it seems the battery improved slowly over time.
xxxxxxxxx ARr SOH Hx
3/20/17 55.956 85% 83.22
5/2/17 56.885 86% 85.39
11/16/17 58.343 89% 88.4
From December 9th till now the numbers have dipped down to what they are now. That's also when we hit the lower 30's.
12/12/17 57.820 88% 87.27 It has been below 20 most of the last 3 days (not sure that makes a difference).
Has any other used owner seen their battery stats improve over time?
I'm sure the health of the battery has probably topped out, but that's ok. I think the climate in northern Ohio may actually be better for battery degradation. Also when she goes to college, it will become my work car. I'll keep it until I can't make the 28 commute to and from work and only drive my ICE when my wife and I go on road trips.
It has only been quick charged 2 times by us and 4 times total. Otherwise, we just use trickle charger that came with the car.
Just thought I would post this because I thought this was interesting.
(edited 3 times because I had a bad cold/fever lol)
You are probably seeing two things in play.
Changing temps will change battery capacity. Warmer means more capacity but also the greater risk of degradation at an unacceptable level.
the other is probably a calibration reset of BMS. LEAFs seem to struggle with reporting the true state of the battery so deeper discharges increases numbers but I think its more the BMS reporting a truer picture of the battery state.
I did a lot of experimenting with my pack and quickly found that temperature changes which should bounce the numbers up as the mercury rises didn't seem to change numbers as significantly as I thought they would. In fact, it would seem the pack has to be rather cold to make a difference. I suspect I simply live in an area that rarely sees the temperatures needed.
Now that we are getting into colder weather including a 4 day stretch into the 20's, I would think that capacities would be reduced but that did not happen. Battery temps only dipped into the low to mid 40's so maybe I needed to park outside or something to see something but as mentioned above, I just ain't seeing it and with the large number of people here reporting numbers rising in Winter, its all very much a head scratcher.
**I notice posting your location is still not a required part of this site. Just another reason this place has diminished in value...
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased
. 29,413 miles. 2018 S40; 15,000 miles, 478 GIDs, 37.0 kwh 109.81 Ahr , SOH 94.61, Hx 120.15
My Blog; http://daveinolywa.blogspot.com
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