DougWantsALeaf
Posts: 1051
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

Mon Jul 08, 2019 6:16 am

So the 40 KW battery is degrading at the same rate as earlier batteries?
2019 SV Plus Silver
2013 Leaf SV
100 Mile Club Member (Number 87)
Max distance on 13 Leaf: 120 miles
Max distance on 19 Leaf: 242 Highway 4.5 miles/kWh (4.9 KWh remaining)

lorenfb
Posts: 2272
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: The 40KWH Battery Topic

Mon Jul 08, 2019 7:06 am

DougWantsALeaf wrote:So the 40 KW battery is degrading at the same rate as earlier batteries?
Really? And where're the data?
#1 Leaf SL MY 9/13: 74K miles, 48 Ahrs, 5.2 miles/kWh (average), Hx=70, SOH=78, L2 - 100% > 1000, temp < 95F, (DOD) > 20 Ahrs
#2 Leaf SL MY 12/18: 4.5K miles, 115 Ahrs, 5.5 miles/kWh (average), Hx=98, SOH=99, DOD > 20%, temp < 105F

DougWantsALeaf
Posts: 1051
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

Mon Jul 08, 2019 8:22 am

LorenB, it was a question.

Wanted to understand the rate of decline better.
2019 SV Plus Silver
2013 Leaf SV
100 Mile Club Member (Number 87)
Max distance on 13 Leaf: 120 miles
Max distance on 19 Leaf: 242 Highway 4.5 miles/kWh (4.9 KWh remaining)

LeftieBiker
Moderator
Posts: 13419
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Mon Jul 08, 2019 12:39 pm

DougWantsALeaf wrote:So the 40 KW battery is degrading at the same rate as earlier batteries?
My conclusion, subject to change with more data, is that the 40kwh pack degrades much like the Wolf Pack (4/'13 - 2014): it doesn't degrade fast if kept cool but does if kept hot. It may be more sensitive to moderately high temps than the Wolf pack, which if true means that multiple QC sessions should be avoided in warm weather...
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.

jmurtagh13
Posts: 7
Joined: Sun Nov 01, 2015 4:54 am
Delivery Date: 10 Mar 2018
Leaf Number: 300844
Location: Atlanta GA

Re: The 40KWH Battery Topic

Fri Jul 12, 2019 9:01 am

I was expecting a larger than normal reduction in SOH about now, but instead I got a .34% increase over the last 2 days.

No 100% charges in the last 6 months. Been charging to 65% once reaching about 20%. It has been hot here in Atlanta for the last few months.

I'll give the specifics if I can't get the images to show.


Image
Image



https://drive.google.com/file/d/18ZTVyH ... sp=sharing
https://drive.google.com/file/d/1kY6FMZ ... sp=sharing
2018 Leaf March 10, 2018
15,000 miles
SOH 91.90

DaveinOlyWA
Posts: 14204
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

Fri Jul 12, 2019 10:20 am

I will add my car to the list of 2018's that have had battery stats go up (for the first time). I am now at a level that matches my stats from April 8th (a period when ahr went from 107.24 to 106.18 in 5 days) I am now at 107.01

So guessing BMS "overestimated my driving for April to July (which did happen slightly especially in June from 3 short vacations of 2-3 days and one medium one 7 days)
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;

jmurtagh13
Posts: 7
Joined: Sun Nov 01, 2015 4:54 am
Delivery Date: 10 Mar 2018
Leaf Number: 300844
Location: Atlanta GA

Re: The 40KWH Battery Topic

Fri Jul 12, 2019 1:02 pm

It will be interesting to see if this reversal continues to happen. Mine was pushed back to April 23rd.

My 3 month rolling loss not counting this last upward correction since Feb has dropped to .8% last year it was almost 2.5%
2018 Leaf March 10, 2018
15,000 miles
SOH 91.90

SageBrush
Posts: 4907
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: The 40KWH Battery Topic

Fri Jul 12, 2019 2:09 pm

LeftieBiker wrote:
DougWantsALeaf wrote:So the 40 KW battery is degrading at the same rate as earlier batteries?
My conclusion, subject to change with more data, is that the 40kwh pack degrades much like the Wolf Pack (4/'13 - 2014): it doesn't degrade fast if kept cool but does if kept hot. It may be more sensitive to moderately high temps than the Wolf pack, which if true means that multiple QC sessions should be avoided in warm weather...
My conclusion about the 'Wolf' pack is that the range of experiences is wide. It would not surprise me if the 40 kWh pack fairs similarly ... which would actually be good news since it is a bigger pack and carries a longer warranty than the 24 kWh LEAFs. I would not care to play the LEAF lottery with a new car purchase but it does suggest that informed purchase of a well behaving 40 kWh LEAF coming off lease would be reasonable for gentle use in non-hot climates.

This is my pampered 'Wolf' pack over the past 27 months, which I think fits in the well behaved group -- for LEAF, anyway.
The initial loss seen in the graph is actually the tail of a 10% loss in capacity after I bought the car, I presume part of a reset calibration.

Image
Last edited by SageBrush on Fri Jul 12, 2019 4:51 pm, edited 3 times in total.
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Two years in Colorado, now in NM
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

DaveinOlyWA
Posts: 14204
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

Fri Jul 12, 2019 3:05 pm

SageBrush wrote:
This is my pampered 'Wolf' pack over the past 27 months...
Your last year is very nice!
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;

SageBrush
Posts: 4907
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: The 40KWH Battery Topic

Fri Jul 12, 2019 3:21 pm

DaveinOlyWA wrote:
SageBrush wrote:
This is my pampered 'Wolf' pack over the past 27 months...
Your last year is very nice!
I mostly think so too, although I lost my 12th capacity bar last month. I'm inclined to think that is just a reflection of my 81% Hx falling faster than the 85% SOH. I'll know for sure in a year, and if I ever get my act together I'll validate LeafSpy with a charge test.
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Two years in Colorado, now in NM
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

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