Astros
Posts: 55
Joined: Wed Oct 11, 2017 11:21 am
Delivery Date: 28 Apr 2018
Leaf Number: 310136
Location: Seattle, WA

Re: The 40KWH Battery Topic

Wed Mar 13, 2019 11:49 am

DaveinOlyWA wrote:Ok, guessing I know of you in another life but have you seen my blog? I did a rather extensive one year review and the last part on degradation you might find interesting. Pay close attention to the last chart when I charted my stats every 1000 miles. The first drop was only 58 days after delivery but only tells me when I car was built and first tested. It had 4 QCs on it when I picked it up.


Yep, I follow your blog, and the drops you've seen are very similar to mine. Excluding those drops the degradation according to LeafSpy is modeled almost perfectly by a double linear fit, with nearly no scatter. That fit is a degradation rate of 3.1 aHr/10,000 miles for the first 7,000 miles, slowing to a rate of 0.9 aHr/10,000 miles after that. The drops were 0.8 aHr at 1,499 miles (~1 month), 0.4 aHr at 5,700 miles (~4 months), and 1.0 aHr at 10,000 miles (~7 months).

I realize now that I misstated my drops earlier, because what I wrote in my earlier post was the cumulative drop. So, unfortunately the drops are not actually getting smaller.
2019 Deep Blue SL Plus

DaveinOlyWA
Posts: 13714
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Feb 2018
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: The 40KWH Battery Topic

Thu Mar 14, 2019 7:56 am

Astros wrote:
DaveinOlyWA wrote:Ok, guessing I know of you in another life but have you seen my blog? I did a rather extensive one year review and the last part on degradation you might find interesting. Pay close attention to the last chart when I charted my stats every 1000 miles. The first drop was only 58 days after delivery but only tells me when I car was built and first tested. It had 4 QCs on it when I picked it up.


Yep, I follow your blog, and the drops you've seen are very similar to mine. Excluding those drops the degradation according to LeafSpy is modeled almost perfectly by a double linear fit, with nearly no scatter. That fit is a degradation rate of 3.1 aHr/10,000 miles for the first 7,000 miles, slowing to a rate of 0.9 aHr/10,000 miles after that. The drops were 0.8 aHr at 1,499 miles (~1 month), 0.4 aHr at 5,700 miles (~4 months), and 1.0 aHr at 10,000 miles (~7 months).

I realize now that I misstated my drops earlier, because what I wrote in my earlier post was the cumulative drop. So, unfortunately the drops are not actually getting smaller.


My last drop was the largest and also took the longest taking a week. Larger drops do make sense as the pack capacity shrinks, what remains must work harder. But as mentioned above, I am not fully invested in my trust of the BMS...
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" onclick="window.open(this.href);return false;

golfcart
Posts: 361
Joined: Mon Jan 04, 2016 6:08 am
Delivery Date: 21 Nov 2015
Location: Virginia Beach, VA

Re: The 40KWH Battery Topic

Thu Mar 14, 2019 4:13 pm

Just leased a 2018 SV today. I'll try to keep track of the degradation over time. It has a build date of 2/18 so it's probably been sitting on the lot about a year.

Here are the initial stats, about what I'd expect after a year on the lot.

odo = 104mi
SOH = 97.47%
AHr = 112.52
Hx = 99.35%
QC =7
L1/L2 = 7
2015 S with Charge Package

jdcbomb
Posts: 164
Joined: Tue May 19, 2015 12:17 pm
Delivery Date: 18 May 2015

Re: The 40KWH Battery Topic

Tue Mar 19, 2019 9:24 am

My sig below reports when I purchased the 18 MY.
As it was driven for the last few months in cool conditions, I'm interested to see what it will look like after the summer:

SOH: 96.7 pct
Ahr: 111.94
Odo: 3,900 miles
Hx: 115.78 pct
QC: 30
L2: 100

Random question: why does the leafspy app show my odo at 2,400 miles when clearly I've driven 3,900???
2018 Leaf SV - In Service 2018 December - Location: Raleigh, NC.
2013 Leaf SL - Original In Service 2013 February - Bar Losses: 2016.10.17 - 25,843 Miles -- 2017.06.23 - 32,080 Miles -- 2018.04.10 - 37,000 Miles -- 4th: 2018.09.23 - 44,255 Miles

goldbrick
Posts: 375
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: The 40KWH Battery Topic

Tue Mar 19, 2019 9:44 am

jdcbomb wrote:Random question: why does the leafspy app show my odo at 2,400 miles when clearly I've driven 3,900???


Just a guess but 3900/2400 is about equal to 1 mile/1 km. I don't know if there is a mile/km setting somewhere that is off but that is where I'd look first.

jdcbomb
Posts: 164
Joined: Tue May 19, 2015 12:17 pm
Delivery Date: 18 May 2015

Re: The 40KWH Battery Topic

Tue Mar 19, 2019 10:14 am

goldbrick wrote:
jdcbomb wrote:Random question: why does the leafspy app show my odo at 2,400 miles when clearly I've driven 3,900???


Just a guess but 3900/2400 is about equal to 1 mile/1 km. I don't know if there is a mile/km setting somewhere that is off but that is where I'd look first.


Yea I thought so at first, but looked in settings, and it clearly has "miles" selected. Therefore, I can only guess I should toggle it to KM and back MI and see what happens. Otherwise, maybe the lite version of this helpful app has a bad km/mi setting.
2018 Leaf SV - In Service 2018 December - Location: Raleigh, NC.
2013 Leaf SL - Original In Service 2013 February - Bar Losses: 2016.10.17 - 25,843 Miles -- 2017.06.23 - 32,080 Miles -- 2018.04.10 - 37,000 Miles -- 4th: 2018.09.23 - 44,255 Miles

LeftieBiker
Moderator
Posts: 11371
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Tue Mar 19, 2019 11:49 am

The early build of the latest version of LeafSpy does that.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

jdcbomb
Posts: 164
Joined: Tue May 19, 2015 12:17 pm
Delivery Date: 18 May 2015

Re: The 40KWH Battery Topic

Tue Mar 19, 2019 2:20 pm

LeftieBiker wrote:The early build of the latest version of LeafSpy does that.


Thanks...so which version should I download from the PlayStore?
2018 Leaf SV - In Service 2018 December - Location: Raleigh, NC.
2013 Leaf SL - Original In Service 2013 February - Bar Losses: 2016.10.17 - 25,843 Miles -- 2017.06.23 - 32,080 Miles -- 2018.04.10 - 37,000 Miles -- 4th: 2018.09.23 - 44,255 Miles

sptleaf
Posts: 18
Joined: Sun Feb 17, 2019 10:57 pm
Delivery Date: 18 Feb 2019
Location: San Diego

Re: The 40KWH Battery Topic

Tue Mar 19, 2019 2:41 pm

In settings you need to click CAN Odometer in Miles and it will show correct mileage on LeafSpy Pro v1.

LeftieBiker
Moderator
Posts: 11371
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Tue Mar 19, 2019 3:04 pm

I just updated to the latest version. This was last year.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

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