DaveinOlyWA
Posts: 15633
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: The 40KWH Battery Topic

Tue Apr 20, 2021 6:06 am

LeftieBiker wrote:
Mon Apr 19, 2021 10:16 pm
I did what may be the last LeafSpy reading on my 2018 yesterday evening.

SOH: 90.36

AHr: 104.31

Hx: 105.80%

Odo: 4420

SOC: 76.6%

Cell variance: 18mv

That's an average degradation rate of 3.12% per year. Mine has followed the typical 40kwh pattern of a single rapid loss the first year, followed by much lower drops afterwards.
Based on your expectation; how many more years to lose a bar if it drops exactly at 85%? You are 2-4% higher than most I know with similar age car but they have much more miles than you. You might make a good case for a time only based degradation chart?
2011 SL; 44,598 mi, 87% SOH. 2013 S; 44,840 mi, 91% SOH. 2016 S30; 29,413 mi, 99% SOH. 2018 S; 25,185 mi, SOH 92.23%. 2019 S Plus; 19,653 mi, 93.47% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

LeftieBiker
Moderator
Posts: 16914
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Tue Apr 20, 2021 6:27 am

I'm figuring two more years at least until the first bar loss. Maybe the correct predictive factors are time plus mileage, with heat also a factor. We are considering buying the car off lease, now that we have an SV Plus for longer trips. My housemate prefers driving the SL, as do I. Since it's guaranteed to have at least 90 miles or so of range for 8 years from new, it's unlikely that we'd find it lacking in range in that period. I'd also be using a Gold Preferred Plus warranty to extend the Bumper to Bumper warranty to six years from new. That's pricey ($2200) if bought locally, but it's a reasonable $829 from one of the dealers who sell it nationally.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

DaveinOlyWA
Posts: 15633
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: The 40KWH Battery Topic

Tue Apr 20, 2021 6:57 am

LeftieBiker wrote:
Tue Apr 20, 2021 6:27 am
I'm figuring two more years at least until the first bar loss. Maybe the correct predictive factors are time plus mileage, with heat also a factor. We are considering buying the car off lease, now that we have an SV Plus for longer trips. My housemate prefers driving the SL, as do I. Since it's guaranteed to have at least 90 miles or so of range for 8 years from new, it's unlikely that we'd find it lacking in range in that period. I'd also be using a Gold Preferred Plus warranty to extend the Bumper to Bumper warranty to six years from new. That's pricey ($2200) if bought locally, but it's a reasonable $829 from one of the dealers who sell it nationally.
Assuming no chemical changes from 40 to 62 kwh pack, I would have a hard time considering heat as a factor. Too many people in very warm areas are in lockstep with northern tier LEAFers. In collecting ongoing LEAF Spy data, its seems the pattern is 6-8% loss year one, 1-3% loss year two then under 1% after that. This covers a pretty wide range of miles driven from very few like you to over 100,000 miles.

It seems that ones who lost the bigger chunks early slowed down sooner so despite the rather wide range of values, they all seemed to have merged into a group that is within 2% of each other. Very...interesting.
2011 SL; 44,598 mi, 87% SOH. 2013 S; 44,840 mi, 91% SOH. 2016 S30; 29,413 mi, 99% SOH. 2018 S; 25,185 mi, SOH 92.23%. 2019 S Plus; 19,653 mi, 93.47% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

danrjones
Posts: 1041
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

Tue Apr 20, 2021 7:46 am

Numbers for my 2018 as of this am:

SOH: 87.37%
AHr: 100.86
Hx: 102.07
QCs: 17
L1/L2: 448
ODO: 9587 mi
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

HerdingElectrons
Posts: 216
Joined: Sat Sep 08, 2018 3:20 pm
Delivery Date: 17 Sep 2018
Location: Central Coast, Ca

Re: The 40KWH Battery Topic

Tue Apr 20, 2021 9:28 am

I finally had a "big" adjustment downward which is a bummer but to be expected. After owning this car for about 30 months I'm personally convinced that SOH degradation is more a factor of time than mileage.

Data logged on 04/11/21:

SOH: 90.37%
AHr: 100.86
Hx: 104.72
QCs: 27 (typically 20-30min & max 36kW due to a 100A charger limitation)
L2's: 1279 (typically 90-120 min session between 1am-7am depending on the season)
ODO: 35,414 mi
2018 SL Pearl White 4.5/3.9; 5.0/4.6 with 205/65/16 tires)

09/18-01K Mi: 114.52AHr / SOH= 99.20%
04/19-10K Mi: 111.45AHr / SOH= 96.54%
11/19-20K Mi: 107.44AHr / SOH= 93.07%
12/20-33K Mi: 105.39Ahr / SOH= 91.29%
04/21-35K Mi: 104.32Ahr / SOH= 90.37%

danrjones
Posts: 1041
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

Tue Apr 20, 2021 9:39 am

HerdingElectrons wrote:
Tue Apr 20, 2021 9:28 am
I finally had a "big" adjustment downward which is a bummer but to be expected. After owning this car for about 30 months I'm personally convinced that SOH degradation is more a factor of time than mileage.

Data logged on 04/11/21:

SOH: 90.37%
AHr: 100.86
Hx: 104.72
QCs: 27 (typically 20-30min & max 36kW due to a 100A charger limitation)
L2's: 1279 (typically 90-120 min session between 1am-7am depending on the season)
ODO: 35,414 mi
How is our AHr the same but different SOH?
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

SageBrush
Forum Supporter
Posts: 6243
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: The 40KWH Battery Topic

Tue Apr 20, 2021 11:17 am

danrjones wrote:
Tue Apr 20, 2021 9:39 am
HerdingElectrons wrote:
Tue Apr 20, 2021 9:28 am
I finally had a "big" adjustment downward which is a bummer but to be expected. After owning this car for about 30 months I'm personally convinced that SOH degradation is more a factor of time than mileage.

Data logged on 04/11/21:

SOH: 90.37%
AHr: 100.86
Hx: 104.72
QCs: 27 (typically 20-30min & max 36kW due to a 100A charger limitation)
L2's: 1279 (typically 90-120 min session between 1am-7am depending on the season)
ODO: 35,414 mi
How is our AHr the same but different SOH?
I treat them as the same too but different scales, although I presume there are more subtle differences that show up from time to time to have made it worth Nissan's trouble to make both.
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

LeftieBiker
Moderator
Posts: 16914
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Tue Apr 20, 2021 12:39 pm

Assuming no chemical changes from 40 to 62 kwh pack, I would have a hard time considering heat as a factor. Too many people in very warm areas are in lockstep with northern tier LEAFers.
I'm talking about the 40kwh pack only. The bigger battery seems to have enough thermal mass - and more available power output - to moderate its temperature.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

danrjones
Posts: 1041
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

Wed Apr 21, 2021 8:28 am

LOL

I am not sure that answered my question. Maybe we just don't know. Weird though to have same AHr and 3% different SOH

I am winning though for the lowest HX! :D
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

DougWantsALeaf
Posts: 2685
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: The 40KWH Battery Topic

Wed Apr 21, 2021 9:01 am

I am starting to think that the reported SoH is a bit of a fiction with the 2018+ Leaf.
2019 S Plus (93.86% SOH) & 2019 SV Plus (93.35% SOH) Both Silver
2013 Leaf SV sold 2019 with 11 bars
100 Mile Club Member (Number 87)
Max Miles on 13 Leaf: 120 miles
Max Miles on 19 SV+: 242 Highway miles @ 4.5 miles/kWh

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