LeftieBiker
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Location: Upstate New York, US

Re: The 40KWH Battery Topic

Sun Jun 03, 2018 12:39 pm

Nissan got burned by the EPA in 2013 with a lower average range, so they dropped it, forever apparently, in 2014.
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.

GRA
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Joined: Mon Sep 19, 2011 1:49 pm
Location: East side of San Francisco Bay

Re: The 40KWH Battery Topic

Sun Jun 03, 2018 3:52 pm

LeftieBiker wrote:Nissan got burned by the EPA in 2013 with a lower average range, so they dropped it, forever apparently, in 2014.

I wouldn't say burned, but as they recommended 80% as the "Long-Life Option", the EPA chose to rate the range as the average of the range at 80% and 100% (or 73, later 75 miles vs. the 84 @100%). Tesla offered you the choice of any 10% you wanted, but didn't say less than 100% was a long-life option. IIRR, the only other car to get caught by this was the RAV4 BEV. So, in order to get the higher EPA range, Nissan dropped the 80% option in either the 2013 or 2014 MY, forget which, and people who want it have been complaining about it ever since. ;)
Guy [I have lots of experience designing/selling off-grid AE systems, some using EVs but don't own one. Local trips are by foot, bike and/or rapid transit].

The 'best' is the enemy of 'good enough'. Copper shot, not Silver bullets.

LeftieBiker
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Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Sun Jun 03, 2018 6:38 pm

A fine case of splitting hairs if ever I saw one, except I don't see a split hair. The 80% option was dropped in 2014, and not because Nissan had any other reason than getting the overall range estimate back up. They have since passed on the opportunity to offer it again under the guise of a regeneration retainer, a la GM.

I did my second LeafSpy reading today. I'll post the screen snap later, but here are the basic stats:


SOH = 99.25

Hx = 100.77

AH = 114.57

SOC = 75.6% (higher than the dash reading of 73%, IIRC.

The car only lost 0.34% capacity since April 30, which if extrapolated would be ~4% loss per year. I'm not counting on 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.

EnigmaEV
Posts: 10
Joined: Mon May 07, 2018 9:52 am
Delivery Date: 31 Mar 2018
Leaf Number: 301349
Location: Saskatchewan, Canada

Re: The 40KWH Battery Topic

Mon Jun 04, 2018 9:40 am

Here are the numbers for my 2018 Leaf so far:

Leaf Spy readings April 9, 2018 at 819 km (512 mi)
AHr - 114.944, SOH - 99.57, Hx - 99.37

Leaf Spy readings June 3, 2018 at 3,831 km (2,394 mi)
AHr - 114.505, SOH - 99.19, Hx - 111.58

Assuming linear degradation over time (not likely), I could expect to lose about 2.4% SOH annually. Based on driving 20,000 km (12,500 mi)/year, the degradation over distance works out to about the same number.

For reference, I live in a relatively cool Canadian climate. The car is almost always parked in a garage with an ambient temperature range of 0-24 C (32-75 F). There are no rapid chargers within hundreds of miles so all charging is L2, usually between 20 and 80%, with a couple charges a week to 100% then driving immediately after.
2018 Leaf SL, 6,206 km, 96.91% SOH, 114.52 Hx, 112.692 AHr

LeftieBiker
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Re: The 40KWH Battery Topic

Mon Jun 04, 2018 1:27 pm

Mine is being babied as well. I have a cool garage that I use when it gets really hot, only QC with a cool pack, and don't charge to 100%, although I will when I need the range. I don't drive much, either.
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.

DaveinOlyWA
Posts: 12989
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Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: The 40KWH Battery Topic

Tue Jun 05, 2018 6:25 am

Well its clear that Hx is not measuring the same parameter as earlier LEAFs....
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 5775 miles, 488 GIDs, 38 kwh 113.37 Ahr available, SOH 98.21, Hx 115.75
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LeftieBiker
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Location: Upstate New York, US

Re: The 40KWH Battery Topic

Tue Jun 05, 2018 1:47 pm

DaveinOlyWA wrote:Well its clear that Hx is not measuring the same parameter as earlier LEAFs....


More like it's clear that SOH and Hx are not showing the same thing. One may have changed, or both.
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.

EnigmaEV
Posts: 10
Joined: Mon May 07, 2018 9:52 am
Delivery Date: 31 Mar 2018
Leaf Number: 301349
Location: Saskatchewan, Canada

Re: The 40KWH Battery Topic

Wed Jul 11, 2018 9:13 pm

So my battery health stats have taken an interesting turn. Since new, the SOH has been decreasing at a regular and expected pace of about 0.01% per day. Over the last 2 days (84 km driven) the SOH dropped 1.15% from 98.84% to 97.69%. I understand from reading other posts that it's quite normal for SOH to bounce around on older models but that hasn't been my experience with the 2018. I also understand stressing over a percentage point or two is overkill but I am curious about the sudden change. There hasn't been any significant change in driving style or charging habits and the ambient temperature has been a typical 20-30C. The only difference on the day the drop started is I returned home with 19% on the GOM - the lowest SOC the battery has been since the first drive home. I guess we'll see what the next few days brings.
2018 Leaf SL, 6,206 km, 96.91% SOH, 114.52 Hx, 112.692 AHr

LeftieBiker
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Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Wed Jul 11, 2018 10:20 pm

I haven't done my July measurement yet. I've succeeded quite well in keeping the pack cool with my cooled garage and doing QCs only with the pack cool or lukewarm (never over 55% as I read the temp gauge) so it will be interesting to see if my SOH is dropping less, or about the same as others'.
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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