DaveinOlyWA
Posts: 14830
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: 2019 "60 kWh" Leaf e-Plus

Mon May 04, 2020 10:30 am

DougWantsALeaf wrote:
Mon May 04, 2020 9:42 am
Ok,

Here is my latest thought on the quarterly adjustments. Safe Harbor warning, no science or methodology sits behinds this hypothesis.

My guess is that Nissan is quarterly tuning the amount of buffer, and with it bringing down the SoH reported to reduce the speed of degradation of the battery. In doing so, the battery post tuning is under reporting true remaining SoH. Then as the battery ages, if the battery underneath stays flatter, it can give back a little of the capacity in line with their internal model. In this way, it can help de-risk its potential battery replacements (under the 8 year / 70% warranty...same as Tesla) as well as help consumers maintain the best battery possible given their usage habits. Almost like how Tesla will throttle back supercharing on cars if its done too much to protect the brand, this is Nissan's way of doing it.

All anecdotal. We are coming up on the 1 year anniversary of our car, and it is doing well. Battery is at 95.67% and I should know in a few days if that is pre or post the last adjustment.
I am thinking the same but the real question becomes what actions cause the adjustment to be more favorable?

I just had my 2nd adjustment on the Plus but had several on the 40 kwh pack and no real conclusions presented here, only observations.

My biggest adjustments came with lighter driving needs including 4 times when charging was more than ¾ DC but only charging 2-3 times a week. This was same for both packs.

Smaller adjustments happens when I drove more.

Increases happened when I drove the most and DC'd a lot frequently 2-3 times in a day. BUT this was a mix as I had one go up, one was a medium down and two adjustments simply didn't happen.

So on my Plus;

First 90 days, relatively light driving (got car mid Nov) nearly all DC charging (did plug into Volta a few hours every time I went to see a movie so maybe 8-10 of those sessions) but the rest was DC (still had NCTC) and those sessions only happened 2-3 times a week. Pack temps spent most of their time in 40's and 50's. A 30-40 minute charge session at 120-124 amps (no knee) would yield temps that sometimes hit the mid 70's.

But that gentleness yielded my largest ever adjustment; 4.15 ahr drop, 2.45% SOH.

2nd 90 days; Pretty much same as above with less movies (obviously) and a lot more driving in last 30 days with DC events bumping to 4 or 5 times per week (one a day for 4 day workweek and occasionally once during 3 day weekend)

Adjustment was "high normal" losing 2.38 ahr, 1.29% SOH.

In the current quarter; I will be doing mostly AC charging at home with target SOC of 75% (I actually hit 76% 3 days in a row...)

I am hoping the pattern holds up after my current work project ends (which is accounting for all the extra driving) the assignments are offered weekly so no real idea how long they will continue but based on our Governor's latest announcements of a tiered "back to the new normal" life, I am guessing at least another 2-4 weeks?

So we shall see.
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; 10,081 mi, 95.03% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

umdkevin
Posts: 63
Joined: Fri Apr 19, 2019 6:47 am
Delivery Date: 15 Apr 2019

Re: 2019 "60 kWh" Leaf e-Plus

Mon May 04, 2020 1:30 pm

Just got my quarterly adjustment as well, SoH and AHr increases :o 92.23% --> 93.13%, 162.694 --> 164.281 respectfully.

I continue to predominantly used DC charging.

Image
LEAF 2018 SV Gun Metallic (traded at odo 7350)
LEAF 2019 SL Plus Gun Metallic
5/4/19 - odo 570, SOH 99.22, AHr 175.02, Hx 103.17
5/4/20 - odo 11,242, SOH 93.13, AHr 164.281, Hx 115.21

DaveinOlyWA
Posts: 14830
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: 2019 "60 kWh" Leaf e-Plus

Mon May 04, 2020 1:46 pm

umdkevin wrote:
Mon May 04, 2020 1:30 pm
Just got my quarterly adjustment as well, SoH and AHr increases :o 92.23% --> 93.13%, 162.694 --> 164.281 respectfully.

I continue to predominantly used DC charging.

Image
Where are you located?
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; 10,081 mi, 95.03% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

umdkevin
Posts: 63
Joined: Fri Apr 19, 2019 6:47 am
Delivery Date: 15 Apr 2019

Re: 2019 "60 kWh" Leaf e-Plus

Mon May 04, 2020 3:31 pm

DaveinOlyWA wrote:
Mon May 04, 2020 1:46 pm
Where are you located?
Maryland
LEAF 2018 SV Gun Metallic (traded at odo 7350)
LEAF 2019 SL Plus Gun Metallic
5/4/19 - odo 570, SOH 99.22, AHr 175.02, Hx 103.17
5/4/20 - odo 11,242, SOH 93.13, AHr 164.281, Hx 115.21

DougWantsALeaf
Posts: 1704
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: 2019 "60 kWh" Leaf e-Plus

Thu May 14, 2020 6:40 pm

Ok, I just went through my last 90 day adjustment.

The step down was from 95.63% to 95.37%.

While not happy to lose the quarter percent, it’s better than the last two where I lost more than a full % each time. My car was manufactured in May 2019, so it makes sense that this is the 4th 90 day adjustment.

Now the question is, will 95% be the settling down zone for the likely slow decline? This quarter, I haven’t done as many miles (lockdown) as prior quarters, so not sure if that figures into the Nissan algorithm.
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

DaveinOlyWA
Posts: 14830
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: 2019 "60 kWh" Leaf e-Plus

Fri May 15, 2020 5:31 am

DougWantsALeaf wrote:
Thu May 14, 2020 6:40 pm
Ok, I just went through my last 90 day adjustment.

The step down was from 95.63% to 95.37%.

While not happy to lose the quarter percent, it’s better than the last two where I lost more than a full % each time. My car was manufactured in May 2019, so it makes sense that this is the 4th 90 day adjustment.

Now the question is, will 95% be the settling down zone for the likely slow decline? This quarter, I haven’t done as many miles (lockdown) as prior quarters, so not sure if that figures into the Nissan algorithm.
Are you checking daily? Cause your adjustment could simply be the normal drop between adjustments if you aren't. As far as how many adjustments? I don't think there is much of a consensus on that. Some only 3, I had 5 (bad ones) a lot had 4 but all these were 40 kwh packs. I don't see any reason to think the 62 kwh packs will act differently so I have to say... I'll get back you in about 91 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; 10,081 mi, 95.03% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

DougWantsALeaf
Posts: 1704
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: 2019 "60 kWh" Leaf e-Plus

Fri May 15, 2020 5:35 am

Yes, I have been checking daily for the last 30+ days as I knew within a couple weeks when my last adjustment (of 1.3%) happened. In the week seen 2 days where I lost .01 which was a bit higher then the few weeks prior when I was losing .01 ever 10 days or so.
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

DaveinOlyWA
Posts: 14830
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: 2019 "60 kWh" Leaf e-Plus

Fri May 15, 2020 6:09 am

DougWantsALeaf wrote:
Fri May 15, 2020 5:35 am
Yes, I have been checking daily for the last 30+ days as I knew within a couple weeks when my last adjustment (of 1.3%) happened. In the week seen 2 days where I lost .01 which was a bit higher then the few weeks prior when I was losing .01 ever 10 days or so.
Well, that is very encouraging. My first adjustment was over 3½% but the 2nd one was only a smidge above 1¼%. If the next adjustment follows the trend and is similar to yours, that would be "acceptable"
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; 10,081 mi, 95.03% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

DougWantsALeaf
Posts: 1704
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: 2019 "60 kWh" Leaf e-Plus

Fri May 15, 2020 6:33 am

About 3 weeks ago, I saw a .07 loss over the course of a week, and was hopeful that was the adjustment. The good news is that I now have the exact day to track for watching for the step changes.

The .26% was an overnight change....but I checked today, and it dropped another .14%, so total adjustment is now .4% Still not horrible, but "less good".I will give it another couple days to see if the adjustment is complete.
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

Astros
Posts: 166
Joined: Wed Oct 11, 2017 11:21 am
Delivery Date: 28 Apr 2018
Leaf Number: 310136
Location: Seattle, WA

Re: 2019 "60 kWh" Leaf e-Plus

Fri May 15, 2020 12:39 pm

My fifth adjustment finished recently, and was by far the smallest yet. I've had my Leaf+ for a little over a year now and have just under 15K miles on the odometer, and am at 95.5% SOH according to LeafSpy.

Adjustments and weeks from ownership:
8 week 1 aHr
20 week 1.3 aHr
33 week 1.37 aHr (I probably just didn't catch this one exactly when it happened)
44 week 0.25 aHr
56 week 0.05 aHr
2019 Deep Blue SL Plus

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