golfcart
Posts: 446
Joined: Mon Jan 04, 2016 6:08 am
Delivery Date: 21 Nov 2015
Location: Virginia Beach, VA

Re: The 40KWH Battery Topic

Mon Jul 15, 2019 5:51 am

Similar to what others with 40kWh packs have reported, I saw a sharp drop in my AHr readings after remaining relatively flat for months.

I leased a 2018SV in March 2019, according to the dealer it had sat on the lot for about 14 months. When I first brought it home it showed 97.5% SOH and 112.5Ahr. It stayed essentially the same April and May but my June measurement showed a decline to 95.4% SOH and 110.1AHr. The June reading was taken when the car had 2150 miles, 13 QCs, and 91 L1/L2 charges reported on it by Leafspy Pro.

I will take my July measurement next week.
2018 SV

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

Tue Jul 16, 2019 5:24 am

golfcart wrote:Similar to what others with 40kWh packs have reported, I saw a sharp drop in my AHr readings after remaining relatively flat for months.

I leased a 2018SV in March 2019, according to the dealer it had sat on the lot for about 14 months. When I first brought it home it showed 97.5% SOH and 112.5Ahr. It stayed essentially the same April and May but my June measurement showed a decline to 95.4% SOH and 110.1AHr. The June reading was taken when the car had 2150 miles, 13 QCs, and 91 L1/L2 charges reported on it by Leafspy Pro.

I will take my July measurement next week.
No rush. Adjustments come every 90 days. You can simply wait till Sept. I will say a .15-.25% loss in July with same for August...
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;

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

Re: The 40KWH Battery Topic

Tue Jul 16, 2019 8:11 am

Here is a table of my data so far. Didn't get a lot of measurements the last month but since it had already taken its big drop I don't think it mattered.

Date SOH AMPHr Hx
5/3/2019 97.63 112.7 97.5
5/6/2019 97.62 112.69 97.94
5/7/2019 97.61 112.68 98.03
5/10/2019 97.6 112.67 98.39
5/13/2019 97.59 112.66 98.55
5/15/2019 97.58 112.65 98.73
5/19/2019 97.57 112.63 98.84
5/27/2019 97.55 112.61 99.27
6/1/2019 97.53 112.59 99.61
6/4/2019 97.5 112.55 100.12
6/11/2019 97.44 112.48 101.03
6/12/2019 97.43 112.47 101.25
6/13/2019 97.42 112.46 101.25
6/14/2019 96.49 111.39 101.58
6/15/2019 96.28 111.15 101.58
6/16/2019 95.64 110.41 101.67
6/17/2019 95.42 110.15 101.82
6/19/2019 95.4 110.13 102.15
6/20/2019 95.38 110.11 102.25 (Insert Earthquake somewhere in here)
7/15/2019 95.19 109.89 103.22
Last edited by danrjones on Tue Jul 16, 2019 12:50 pm, edited 1 time in total.
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

golfcart
Posts: 446
Joined: Mon Jan 04, 2016 6:08 am
Delivery Date: 21 Nov 2015
Location: Virginia Beach, VA

Re: The 40KWH Battery Topic

Tue Jul 16, 2019 10:22 am

DaveinOlyWA wrote:
No rush. Adjustments come every 90 days. You can simply wait till Sept. I will say a .15-.25% loss in July with same for August...
I thought I had done it on the 20th of each month previously but I looked back and it was the 15th so I went ahead and took the measurement.

You are close, it dropped about 0.4% for July to 109.64AHr. We have had a brutally hot July so far in the mid-Atlantic so I'm sure that's not helping.

Date AHr TemperatureF
3/15/19 112.52 69.1
4/15/19 112.45 75.2
5/15/19 112.37 82.2
6/15/19 110.11 90.8
7/15/19 109.64 97.0
2018 SV

HerdingElectrons
Posts: 139
Joined: Sat Sep 08, 2018 3:20 pm
Delivery Date: 17 Sep 2018
Location: Central Coast, Ca

Re: The 40KWH Battery Topic

Wed Jul 17, 2019 8:42 am

So in 10 months & 14K miles I have lost 3.45% capacity. I'm expecting around 5% total loss once summer is over & hoping for a tapering loss afterwards.

Car is garaged on the eastern side of the home, only L2 charging typically to 75-90% on any given day & try to keep the SOC under 75% if using the car less but it is driven almost daily hence the mileage.

Battery stats in my signature.

'18 SL centered around the 93422 zip code for weather analysis.

https://www.bestplaces.net/climate/zip- ... dero/93422
2018 SL Pearl White 4.2/3.7 Warm/Cold weather

09/18, 01K mi: AHr= 114.52 / SOH= 99.20 / HX= 099.70%
04/19, 10K mi: Ahr= 111.45 / SOH= 96.54 / HX= 113.82%
11/19, 20K mi: Ahr= 107.44 / SOH= 93.07 / HX= 109.96%

mpena43
Posts: 1
Joined: Sat Jul 20, 2019 2:57 pm
Delivery Date: 15 Jul 2019
Leaf Number: 301999

Re: The 40KWH Battery Topic

Fri Jul 26, 2019 8:10 pm

I recently purchased a used 2018 Nissan Leaf SV here in central Florida from a Toyota dealership with 29,549 miles. (Traded in Honda Civic Si) I negotiated the price down from $20.9K to $18.5K. I'm somewhat new to electric cars, so I didn't have Leaf Spy until after the purchase. The previous owner used QCs a lot. I now have 31,359 miles on the vehicle. I routinely drive about 800 miles a week, 60% city/40% highway. I average 12 level 2 charges a week. Since I've had the vehicle I've performed 2 QCs. I like the car but I'm slowly realizing it doesn't quite fit my needs. Highway driving efficiency is horrible above 65 mph. I usually have 4.2 miles/kWh. I'm not an aggressive driver. Long term I don't think it can keep up with the demand I put on it along with the Florida high temperatures. At the end of a lot of my drives I have 15-20 miles left according to the GOM. I lose about 0.01 worth of SOH every day according to Leaf Spy. I charge to 100% due to the needed range. I'm thinking about trading it in for a Tesla Model 3 before the end of the year before the car gets any worse. Here are my Leaf Spy stats today:

ODO: 31,359
GIDs: 445
kWh remaining: 34.5
AHr: 103.90
SOH: 90.00
SOC: 96.8
Voltage: 403.01
Hx: 98.33
QC: 459
L1/L2: 417

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

Sat Jul 27, 2019 11:04 am

I’m experiencing very similar degrading.
Purchased a new ‘18 SV two months ago at 95.95 SOH.
Car was sitting in the lot for about a year in Des Moines, IA. Where we had that polar vortex in the winter and car was outside.
As of now my SOH is 95.69. So dropping about .01 every other day. :cry:

I bought the car 11,500 off plus whatever I get for the fed tax credit. So was very happy at the time.

I hate to see this gradual degradation. I’m hoping battery technology will advance and replacement will be lower than $9500 when the time comes. I sure wish there was a way to install thermal cooling system.

Also stay within 35-75 SOC. No rapid charging. Mostly public charging.

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

Re: The 40KWH Battery Topic

Sat Jul 27, 2019 12:30 pm

Lw4nier wrote:
Sat Jul 27, 2019 11:04 am
As of now my SOH is 95.69. So dropping about .01 every other day. :cry:
I hate to see this gradual degradation.
-
Heh. That rate is *outstanding* for a LEAF
Most owners see 3x - 5x that rate
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

DougWantsALeaf
Posts: 1066
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

Sat Jul 27, 2019 12:51 pm

In the British EV site I am on, they said Tesla posts guidelines of 10% degradation in the first 2 years and 5% additional in year 3.

Are the guidelines the same here?
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: 13473
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Sat Jul 27, 2019 1:28 pm

Lw4nier wrote:
Sat Jul 27, 2019 11:04 am
I’m experiencing very similar degrading.
Purchased a new ‘18 SV two months ago at 95.95 SOH.
Car was sitting in the lot for about a year in Des Moines, IA. Where we had that polar vortex in the winter and car was outside.
As of now my SOH is 95.69. So dropping about .01 every other day. :cry:

I bought the car 11,500 off plus whatever I get for the fed tax credit. So was very happy at the time.

I hate to see this gradual degradation. I’m hoping battery technology will advance and replacement will be lower than $9500 when the time comes. I sure wish there was a way to install thermal cooling system.

Also stay within 35-75 SOC. No rapid charging. Mostly public charging.


You will likely not see as much degradation over the Winters. My 2018 was on track for about 8-10% a year last Fall, but there was virtually no drop recorded for the Winter, even after it warmed up this Spring. I ended up with less than 5%, IIRC. It's recorded in this topic.
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.

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