DaveinOlyWA
Posts: 14893
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Requesting Hx values for all 40/62 kwh LEAFers

Wed Jun 10, 2020 7:24 pm

There is probably no real consensus of what Hx is but after reviewing several LS shots of 40 kwh LEAFs, a pattern is emerging.

When Hx is low (around 100%), degradation rates are low.

When Hx is high (around 118-120%) degradation rates are high.

So I am looking for LEAFs that counter this observation.
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; 11,333.1 mi, 93.73% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

DougWantsALeaf
Posts: 1815
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Requesting Hx values for all 40/62 kwh LEAFers

Wed Jun 10, 2020 7:57 pm

Leaf Plus SV
Built 5/19
Purchase 6/19

5/29/2020
166.91 ahr
SOH = 94.62%
Hx 110.45

8,200 miles
2019 S Plus (98.6% SOH) & 2019 SV Plus (94.6% SOH) Both Silver
2013 Leaf SV sold 2019
100 Mile Club Member (Number 87)
Max Miles on 13 Leaf: 120 miles
Max Miles on 19 SV Leaf: 242 Highway 4.5 miles/kWh

Learjet
Posts: 80
Joined: Tue Mar 24, 2020 8:04 pm
Delivery Date: 11 Mar 2020
Leaf Number: 309454
Location: Louisiana, USA

Re: Requesting Hx values for all 40/62 kwh LEAFers

Wed Jun 10, 2020 8:23 pm

Leaf Plus SL
Built 2/19
Purchase 3/20

6/4/2020
2,200 miles
AHr =169.29
SOH = 95.97%
Hx = 95.01%
2019 Nissan Leaf SL Plus

danrjones
Posts: 696
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: Requesting Hx values for all 40/62 kwh LEAFers

Wed Jun 10, 2020 8:46 pm

2018 Leaf SV
Purchased May 2019

5915 miles
AHr 103.76
SOH 89.88%
HX 108.83
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

LeftieBiker
Moderator
Posts: 15050
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Requesting Hx values for all 40/62 kwh LEAFers

Wed Jun 10, 2020 9:10 pm

If this pans out, it may provide a way to detect better packs on a dealership lot.

Last SOH (end of April): 91.69%

Last SOH: 106.56% (I think they threw the % sign in just to mess with us.)
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.

GerryAZ
Gold Member
Posts: 2534
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Requesting Hx values for all 40/62 kwh LEAFers

Wed Jun 10, 2020 11:11 pm

2019 SL Plus
Manufactured 07/2019
Purchased 08/10/2019
175.15 AHr
99.29% SOH
98.19% Hx
QC=1; L1/L2=6
64 miles at initial Leaf Spy reading on 8/11/2019

173.22 AHr (172.27)
98.20% SOH (97.66%)
112.45% Hx (112.00%)
QC=2; L1/L2=43
4,383 miles after first 90-day adjustment on 10/25/2019

173.19 AHr (172.70)
98.18% SOH (97.90%)
114.02% Hx (113.99%)
QC=2; L1/L2= 80
10,160 miles after second 90-day adjustment on 1/22/2020

171.78 AHr (172.66)
97.38% SOH (97.88%)
113.11% Hx (113.19%)
QC=4; L1/L2=108
15,073 miles after third 90-day adjustment on 4/23/2020

170.90 AHr
96.88% SOH
109.93% Hx
QC=4; L1/L2=122
17,200 miles tonight
I have been teleworking since March 6th so less highway driving, less miles per day, more days between charges, and SOC is high when car is parked the first day after charging. Numbers in parentheses are values before adjustment so you can see the first two adjustments were upward while last was downward. It will be interesting to see how the numbers change if I ever get back to my "old normal" use pattern.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL Plus purchased 8/10/2019

LeftieBiker
Moderator
Posts: 15050
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Requesting Hx values for all 40/62 kwh LEAFers

Wed Jun 10, 2020 11:34 pm

Gerry is an exception, it seems.
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: 14893
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: Requesting Hx values for all 40/62 kwh LEAFers

Thu Jun 11, 2020 6:28 am

LeftieBiker wrote:
Wed Jun 10, 2020 11:34 pm
Gerry is an exception, it seems.
Maybe... One thing I notice is it takes several months just to get to your "equilibrium Hx. We all start in the mid to upper 90's then rise. I peaked at 117.15 and now at 113.44 as of this morning.

I also charted my rise and noticed early the rises averaged between .20 -.30 normally driving 15-30 miles a day but then I saw bigger jumps;

99.53-100.38 driving 56 miles
100.28-101.56 driving 97 miles
107.65-109.11 driving 377 miles

So I get to around 112 and I am static for a few weeks then my first adjustment happened and its a big one (over 2.5% loss) lasting 9 days and Hx goes from 112.79 to 113.95 during that period with all days between 11.3 to 26.7 miles with 7 of the 9 days between 20.3 and 26.7 miles

Early on, a DC session also happened on the big jump days (more than .5%)
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; 11,333.1 mi, 93.73% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

DaveinOlyWA
Posts: 14893
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: Requesting Hx values for all 40/62 kwh LEAFers

Thu Jun 11, 2020 6:45 am

GerryAZ wrote:
Wed Jun 10, 2020 11:11 pm
2019 SL Plus
Manufactured 07/2019
Purchased 08/10/2019
175.15 AHr
99.29% SOH
98.19% Hx
QC=1; L1/L2=6
64 miles at initial Leaf Spy reading on 8/11/2019

173.22 AHr (172.27)
98.20% SOH (97.66%)
112.45% Hx (112.00%)
QC=2; L1/L2=43
4,383 miles after first 90-day adjustment on 10/25/2019

173.19 AHr (172.70)
98.18% SOH (97.90%)
114.02% Hx (113.99%)
QC=2; L1/L2= 80
10,160 miles after second 90-day adjustment on 1/22/2020

171.78 AHr (172.66)
97.38% SOH (97.88%)
113.11% Hx (113.19%)
QC=4; L1/L2=108
15,073 miles after third 90-day adjustment on 4/23/2020

170.90 AHr
96.88% SOH
109.93% Hx
QC=4; L1/L2=122
17,200 miles tonight
I have been teleworking since March 6th so less highway driving, less miles per day, more days between charges, and SOC is high when car is parked the first day after charging. Numbers in parentheses are values before adjustment so you can see the first two adjustments were upward while last was downward. It will be interesting to see how the numbers change if I ever get back to my "old normal" use pattern.
Yours is interesting on a few different observations. You did have upward adjusting numbers but your daily drops on first adjustment were higher. Your dailies dropped 1.39% on first adj. .30 on 2nd, .30 on the 3rd, but already .5 on the 4th barely halfway to #4.


So, buy in August, big daily drops but upwards bump in Oct (starting to get cooler?? I don't remember it being very cool in October when I lived there 4 decades ago. Was the weather cooler than normal?)

Go thru 2 adjustments in Winter. small ones. Now as Summer swings in, one way to "larger" adjustment.

So seems like your car might be affected by heat but it simply has to be the extreme kind since others in "warm" areas don't seem to be...at least not to the degree of Gen 1 LEAFs.

Also wondering how your charging habits are playing a part. It "shouldn't" be good but hard to argue that point at this time.
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; 11,333.1 mi, 93.73% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

lorenfb
Posts: 2441
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: Requesting Hx values for all 40/62 kwh LEAFers

Thu Jun 11, 2020 8:28 am

DaveinOlyWA wrote:
Wed Jun 10, 2020 7:24 pm
There is probably no real consensus of what Hx is
Correct, for Leaf2. Although it's highly correlated with the degradation of the conductance (reciprocal of battery resistance) for Leaf1 over time.
It tracks SOH for Leaf1 vehicles.
DaveinOlyWA wrote:
Wed Jun 10, 2020 7:24 pm
but after reviewing several LS shots of 40 kwh LEAFs, a pattern is emerging.
A total waste of time. Like trying to find correlation from a random number generator. Have fun, though!
#1 Leaf SL MY 9/13: 76K miles, 47 Ahrs, 5.0 miles/kWh (average), Hx=70, SOH=73, L2 - 100% > 1000, temp < 95F, (DOD) > 20 Ahrs
#2 Leaf SL MY 12/18: 10.3K miles, SOH 109Ahrs/115Ahrs, 5.2 miles/kWh (average), DOD > 20%, temp < 105F

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