DougWantsALeaf
Posts: 2374
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 Mar 09, 2019 5:46 pm

Texas leaf

One year in, what is your usable range?
2019 S Plus (98.06% SOH) & 2019 SV Plus (94.77% 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

TexasLeaf
Posts: 115
Joined: Wed Mar 21, 2018 5:37 am
Delivery Date: 17 Mar 2018
Leaf Number: 303111
Location: Texas

Re: The 40KWH Battery Topic

Sun Mar 10, 2019 5:35 am

DougWantsALeaf wrote:Texas leaf

One year in, what is your usable range?
It depends on a lot of variable; wind, change in elevation, temperature, speed, etc. I use LeafSpy to to tell miles/kWh to reach LBW at my destination then I adjust my speed to get the required miles/kWh. I usually don’t go more than 110 miles if I’m driving at 60 mph or 80 miles if I’m driving at 75 mph although I could drive much further based on conditions and speed.

The range differences from when the car was new are not really noticeable to me yet. I drive pretty much the same way I have always drove the car.
2018 Leaf SL
2015 Ford Fusion Energi Titanium
2007 GMC Envoy XL SLT 4X4

EnigmaEV
Posts: 22
Joined: Mon May 07, 2018 9:52 am
Delivery Date: 31 Mar 2018
Leaf Number: 301349
Location: Saskatchewan, Canada

Re: The 40KWH Battery Topic

Sun Mar 10, 2019 1:26 pm

TexasLeaf wrote:2018 SL
Purchase date 17-MAR-18

SOH 93.93%
AHr 108.43
Hx 107.67%

Odo 14,550 miles
L2 charges 176
DC fast charges 164
Here are my current 2018 SL stats - purchased March 31, 2018

SOH 94.30%
AHr 108.86
Hx 121.46

Odo 13,601 miles
L2 charges 616 (by LeafSpy - likely closer to 200 in reality)
DC fast charges 1

We are finally starting to see some temperatures above freezing in our forecast after more than a month of -20 to -40C. I would have expected to see more of spread in SOH numbers from a frozen Canadian Leaf to a hot Texas Leaf. Based on this comparison it would seem ambient temperature may not be as big a factor in the 40 kWh battery.
2018 Leaf SL, 43,577 km, SOH - 92.16%, Hx - 119.23, AHr - 106.39
2020 Model 3 Performance, 9,581 km

sptleaf
Posts: 20
Joined: Sun Feb 17, 2019 10:57 pm
Delivery Date: 18 Feb 2019
Location: San Diego

Re: The 40KWH Battery Topic

Sun Mar 10, 2019 5:17 pm

Interesting how they are both about 6% SOH loss per year. If it's a linear degradation of 6% SOH loss per year, would that mean a 4 bar drop in 6 years? In the past, has it been the 4th bar lost around 64% SOH? Who knows how they calculate the 4 bars now though?

LeftieBiker
Moderator
Posts: 16171
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Sun Mar 10, 2019 7:23 pm

It is likely that the first year isn't an indicator of subsequent annual drops. I hope not anyway: I'm on track for an 11% drop the first 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: 15336
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 Mar 11, 2019 6:28 am

Interesting is not a word I would use. I think the wide geographical differences and climates each is seeing and we all still have nearly the same degradation based loosely on time/mileage tells me that the BMS SW is not right.
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; 16,686 mi, 92.44% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

SageBrush
Posts: 5628
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: The 40KWH Battery Topic

Mon Mar 11, 2019 7:04 am

DaveinOlyWA wrote:Interesting is not a word I would use. I think the wide geographical differences and climates each is seeing and we all still have nearly the same degradation based loosely on time/mileage tells me that the BMS SW is not right.
I would wonder the same if a large data set develops. We will be back to measuring kWh put into the pack from VLB to be sure.
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

Astros
Posts: 170
Joined: Wed Oct 11, 2017 11:21 am
Delivery Date: 28 Apr 2018
Leaf Number: 310136
Location: Seattle, WA

Re: The 40KWH Battery Topic

Mon Mar 11, 2019 10:44 am

My stats, on a 2018 SV bought last April:

~13000 miles
43 L3
252 L2
AHr 109.92
SOH 95.22%
Hx 114.63%
Driven mostly in Western Washington.

I track the stats roughly once a week, and have seen almost all of the degradation happen over three sudden drops, spaced every ~90 days. One of those drops happened during a long trip in the summer, but another one happened over the course of a few hours on a cool evening with only a few miles driven around town.
2019 Deep Blue SL Plus

LeftieBiker
Moderator
Posts: 16171
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Mon Mar 11, 2019 12:13 pm

Astros wrote:My stats, on a 2018 SV bought last April:

~13000 miles
43 L3
252 L2
AHr 109.92
SOH 95.22%
Hx 114.63%
Driven mostly in Western Washington.

I track the stats roughly once a week, and have seen almost all of the degradation happen over three sudden drops, spaced every ~90 days. One of those drops happened during a long trip in the summer, but another one happened over the course of a few hours on a cool evening with only a few miles driven around town.
You may have the lowest degradation we've seen, by a small margin. 5% a year would be tolerable for me.
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.

Astros
Posts: 170
Joined: Wed Oct 11, 2017 11:21 am
Delivery Date: 28 Apr 2018
Leaf Number: 310136
Location: Seattle, WA

Re: The 40KWH Battery Topic

Mon Mar 11, 2019 2:40 pm

LeftieBiker wrote: You may have the lowest degradation we've seen, by a small margin. 5% a year would be tolerable for me.
It's the sudden drops every three months that worry me. Without them my degradation has been fit perfectly by a double-linear trend, losing 3aHr/10,000 miles for the first 6,000 miles, and less than 1aHr/10,000 miles after that. If that was all there was to it, I would have only 13% degradation after 8 years and 120,000 miles. If I include those drops, then it looks like I would have 30% degradation over those 8 years. However, I notice that the amplitude of the drops is decreasing each time: the first one was 2.25 aHr, the second 1.4 aHr, and the last one was 1.0 aHr. If they keep to the past pattern, I expect to see another drop this week or next, so we'll see if the amplitude really does keep decreasing.

One thing I should note is that we don't baby the battery. My wife primarily drives the car during the week, and she likes to have a full battery every morning, so we almost always charge to 100% in the evening. We also take our Leaf on long trips in the summer, and when we do we have to "quick" charge multiple times in a day. It is pretty frustrating to get only ~22kW from the second charge and ~18kW from the third or fourth! Given the substantial degradation just with time, and no apparent correlation between those fast charges and measurable degradation, I would really like to get the software fix for #rapidgate over here.
2019 Deep Blue SL Plus

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