DaveinOlyWA
Posts: 14231
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Wed Nov 20, 2019 9:10 pm

Final 40 kwh stats. Some good, some not so good but one thing was very clear; it was cheap to operate!

https://daveinolywa.blogspot.com/2019/1 ... other.html
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; 412 mi, 99.72% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

Kieran973
Posts: 103
Joined: Tue Jun 19, 2018 6:51 pm
Delivery Date: 30 Apr 2019
Location: near NY, NY

Re: The 40KWH Battery Topic

Sat Nov 23, 2019 10:04 pm

I just did a Leaf Spy reading after (roughly) 6 months of ownership on my 2019 SV. The results are not encouraging. It would seem I've already lost 5% capacity.

Purchase date: 4/30/19. Build date: 02/2019.

Leaf Spy Reading: 11/23/19
Odometer: 10,448

AHr: 109.77
SOH: 95.09%
Hx: 112.95%
GIDS: 387
SOC: 79.7% (dash says 81%)
Remain: 30.0 kWh


My daily charge is to 60%. My wife and I do use the Leaf as much as possible - we use it for about 85% of our driving (17,000 miles a year projected) and only use our Honda CRV for about 15% of our driving (3,000 miles a year projected). And I did take the Leaf on several medium range road trips this summer and fall - NYC to Boston and back 4 times, NYC to D.C. and back once - during which I obviously QC'd, but I never drove more than 200 miles in one day and never QC'd more than twice in one day. So I'm hoping that this apparent 5% capacity loss in 6-7 months time can be explained by Leaf Spy's supposed 3% margin of error. Otherwise, unless there's a serious drop off in the degradation rate, I'm on track for 10% capacity loss in the first year.

I do, however, still love this car.
2019 Leaf SV (silver) with All-Weather Package

LeftieBiker
Moderator
Posts: 13472
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Sat Nov 23, 2019 10:27 pm

I was at about 4% loss after 6 months, but the BMS stopped updating for the Winter, and when it did resume in the Spring the total loss was only a bit under 5% - for the year.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

DaveinOlyWA
Posts: 14231
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

Mon Nov 25, 2019 7:29 am

Looks like 5-7% loss in first 12-15 months is quite the norm. The real question is what happens after that. I lost LESS than one percent from month 15 to month 21. This covered all Summer and several stints of battery baking. The car has moved on (probably didn't like me abusing her 8-) ) and I have a new pack to tortue. I am expecting the same; higher degradation rates initially, settling down in a year or so.

Being a larger pack with the associated easier cycling should make a difference but I am expecting the difference to be small so I will predict 5% after a year. We have 50 weeks and 5 days to wait to find out ;)
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; 412 mi, 99.72% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

Kieran973
Posts: 103
Joined: Tue Jun 19, 2018 6:51 pm
Delivery Date: 30 Apr 2019
Location: near NY, NY

Re: The 40KWH Battery Topic

Mon Nov 25, 2019 9:21 pm

LeftieBiker wrote:
Sat Nov 23, 2019 10:27 pm
I was at about 4% loss after 6 months, but the BMS stopped updating for the Winter, and when it did resume in the Spring the total loss was only a bit under 5% - for the year.
DaveinOlyWA wrote: Looks like 5-7% loss in first 12-15 months is quite the norm. The real question is what happens after that. I lost LESS than one percent from month 15 to month 21. This covered all Summer and several stints of battery baking. The car has moved on (probably didn't like me abusing her 8-) ) and I have a new pack to tortue. I am expecting the same; higher degradation rates initially, settling down in a year or so.

Being a larger pack with the associated easier cycling should make a difference but I am expecting the difference to be small so I will predict 5% after a year. We have 50 weeks and 5 days to wait to find out ;)
All good points. If after 2 years, I could stay above 90% SOH, then settle down into a sub 4% average annual capacity loss rate, that wouldn't be too bad....
2019 Leaf SV (silver) with All-Weather Package

danrjones
Posts: 396
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

Thu Dec 05, 2019 8:18 am

I should be coming up any day now on my next "big" update; however, if as others suggest BMS stops in the winter, maybe not. My SOH has been stuck for awhile now - although the HX is climbing rapidly. I find that odd. My HX had started downward this fall/winter until I did a single fast charge a few weeks back, then it has climbed steadily. I have filtered out any data where I had more than two readings - ie, got rid of any in between data, that were triplets or more.



Date SOH AMPHr Hx
05/03/2019 97.63 112.70 97.50
05/06/2019 97.62 112.69 97.94
05/07/2019 97.61 112.68 98.03
05/10/2019 97.60 112.67 98.39
05/13/2019 97.59 112.66 98.55
05/15/2019 97.58 112.65 98.73
05/19/2019 97.57 112.63 98.84
05/27/2019 97.55 112.61 99.27
06/01/2019 97.53 112.59 99.61
06/04/2019 97.50 112.55 100.12
06/11/2019 97.44 112.48 101.03
06/12/2019 97.43 112.47 101.25
06/13/2019 97.42 112.46 101.25
06/14/2019 96.49 111.39 101.58
06/15/2019 96.28 111.15 101.58
06/16/2019 95.64 110.41 101.67
06/17/2019 95.42 110.15 101.82
06/19/2019 95.40 110.13 102.15
06/20/2019 95.38 110.11 102.25
07/15/2019 95.19 109.89 103.22
07/24/2019 95.10 109.78 104.04
08/11/2019 94.90 109.55 104.95
08/30/2019 94.73 109.36 106.05
09/05/2019 94.68 109.30 106.27
09/10/2019 94.65 109.26 106.45
09/11/2019 94.64 109.25 106.48
09/12/2019 94.50 109.09 106.47
09/13/2019 93.73 108.20 106.48
09/14/2019 93.30 107.71 106.45
09/15/2019 93.29 107.69 106.45
09/17/2019 93.28 107.68 106.42
09/19/2019 93.27 107.67 106.41
09/23/2019 93.25 107.65 106.25
09/29/2019 93.23 107.62 106.50
10/16/2019 93.19 107.58 105.56
10/21/2019 93.19 107.58 105.34
10/23/2019 93.18 107.57 105.20
10/27/2019 93.16 107.54 105.15
11/05/2019 93.16 107.54 105.08
11/11/2019 93.15 107.53 104.88
11/14/2019 93.14 107.52 104.83
11/15/2019 93.14 107.52 105.07
11/18/2019 93.13 107.51 105.37
11/20/2019 93.12 107.50 105.52
12/05/2019 93.12 107.50 106.04
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

jdcbomb
Posts: 213
Joined: Tue May 19, 2015 12:17 pm
Delivery Date: 18 May 2015

Re: The 40KWH Battery Topic

Thu Dec 05, 2019 8:47 am

Interesting to see many 40 kWh batteries are hovering around 92 - 93 SOH. Mine is sitting at 93.3 SOH after 11,800 miles and just under 12 months service life.
2018 SL - In Service 2019 JUN - 2019 OCT 96.7 SOH
2018 SV - In Service 2019 JAN - Location: Raleigh, NC - 2019 OCT 93.7 SOH
2013 SL - In Service 2013 FEB, Sold 2018 JUN (50,050 mi) - 4 Bars Lost (44,255 mi)

danrjones
Posts: 396
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: The 40KWH Battery Topic

Thu Dec 05, 2019 10:31 am

jdcbomb wrote:
Thu Dec 05, 2019 8:47 am
Interesting to see many 40 kWh batteries are hovering around 92 - 93 SOH. Mine is sitting at 93.3 SOH after 11,800 miles and just under 12 months service life.
Yes, and it seems to be almost irregardless of mileage. Granted we have a small sample size here.
I need to check but I think my Odometer is around 3300 miles. I'll check at lunch.
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

Lw4nier
Posts: 6
Joined: Sun Mar 03, 2019 7:20 pm
Delivery Date: 06 Mar 2019
Leaf Number: 307104
Location: Des Moines, IA

Re: The 40KWH Battery Topic

Thu Dec 05, 2019 8:01 pm

I’m going through my 3mo update now. Currently at 91.62 soh.
2018 with 4,170 miles. And try keeping it in the 30-75 soc range. Doesn’t matter what I do, still drops. :oops: :oops:

DaveinOlyWA
Posts: 14231
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

Thu Dec 05, 2019 8:09 pm

My degradation basically slowed to a crawl and the seasons had nothing to do with it since it started in April. I traded it in at 25,000 miles and so will be starting the monitoring all over. FYI; on my E Plus, yesterday, I hit 99.66% SOH which is where my 40 kwh started. This should be 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; 412 mi, 99.72% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

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