Durandal
Posts: 310
Joined: Wed Sep 21, 2016 8:55 am
Delivery Date: 22 Sep 2016
Leaf Number: 025018
Location: Central Arkansas

Re: How long 'til 4th bar drops?

Thu Aug 17, 2017 10:29 am

swooshrc wrote:Mine dropped on May 31st. I wanted to wait until the end of the summer before getting replacement so drove it for over two months with 8 bars. I dropped it off at the Dealership last week. Approved. (Multiple Nissan owner, purchased Leaf 2 years ago with 36K miles)

No other data available. I joined forum due to 4th bar loss.

If you don't mind, can you get Leaf Spy and pull your Ah, SOH, and Hx values off of it so we can have it for statistical information? (Along with year model if you don't mind.)
Pulled the trigger on going EV on 10/2016 with a 2012 Leaf, and a Tesla Model 3 reservation expected to receive in June 2018.

mehagel65
Posts: 12
Joined: Tue Mar 21, 2017 9:55 am
Delivery Date: 21 Mar 2013
Leaf Number: 408268

Re: How long 'til 4th bar drops?

Thu Aug 17, 2017 1:20 pm

https://photos.google.com/photo/AF1QipM5B3xCLE0Ek8tKb92h-F8fe5s6ObUDI8X99upD

I'm assuming, based on what I have read, that I'm just weeks from dropping the 4th bar?

AHr 41.90 SOH 64% ODO 36391 HX 57.40
2013 SL

sandeen
Posts: 116
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: How long 'til 4th bar drops?

Thu Aug 17, 2017 2:53 pm

mehagel65 wrote:I'm assuming, based on what I have read, that I'm just weeks from dropping the 4th bar?

AHr 41.90 SOH 64% ODO 36391 HX 57.40
2013 SL


There's a lot less data so far on 2013s, and at least the Hx numbers differ substantially from 2011/2012. But from the 8 reports I've been able to find, the average Ahr at drop for 2013s was about 41.5, and average Hx was 56.4. The highest Ahr at drop was 43.3, and the lowest was 40.05
(The average Ahr at drop for 2011/2012 is about 42.5)
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

mehagel65
Posts: 12
Joined: Tue Mar 21, 2017 9:55 am
Delivery Date: 21 Mar 2013
Leaf Number: 408268

Re: How long 'til 4th bar drops?

Mon Sep 11, 2017 8:02 am

sandeen wrote:
mehagel65 wrote:I'm assuming, based on what I have read, that I'm just weeks from dropping the 4th bar?

AHr 41.90 SOH 64% ODO 36391 HX 57.40
2013 SL


There's a lot less data so far on 2013s, and at least the Hx numbers differ substantially from 2011/2012. But from the 8 reports I've been able to find, the average Ahr at drop for 2013s was about 41.5, and average Hx was 56.4. The highest Ahr at drop was 43.3, and the lowest was 40.05
(The average Ahr at drop for 2011/2012 is about 42.5)



Just dropped my 4th bar. Could not be happier about it. Here are my Leaf Pro Readings.
AHr=41.25, SOH=63, Hx=56.34
2013 SL with 36,680 miles

https://photos.app.goo.gl/nTkLYPxG6tWmKA3u1
https://photos.app.goo.gl/4ZrOIwQz2E6E8uGy2

sandeen
Posts: 116
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: How long 'til 4th bar drops?

Tue Sep 12, 2017 7:37 am

drees wrote:Everything that I can see shows that SOH is current AHr / 66.25 and calculated in LeafSpy. 66.25 AHr is the assumed capacity of a new battery.


FWIW, Turbo3 said that SOH is read directly from the car.
(The car may be calculating it based on the number reported in Ahr, but LeafSpy reads SOH directly.)

I looked into my Ahr & Hx vs. SOH numbers a bit, and there's some hysteresis. There is no clear cut-point at a specific Ahr for, say, 66 SOH. I've had ranges of Ahr readings during which the car reported either 66 SOH or 67 SOH, for example. Tried to play spot-the-trend but didn't see anything obvious. You're right, though, that it seems well correlated to Ahr / 66.25.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

cyberyeh
Posts: 13
Joined: Sat Jun 10, 2017 12:12 am
Delivery Date: 10 Oct 2012
Leaf Number: 020324
Location: San Diego

Re: How long 'til 4th bar drops?

Tue Sep 12, 2017 9:11 am

I bought a 2012 with 37000 miles and 9 bars back in June. Took it to dealer and found out warranty will expire on October 10. LeafSpy shows SOH T 67% and 44.45 AHr. Been quick charging once a day for the past few weeks but not much change. Really hope I'll get to 8 bars before warranty expires.

sandeen
Posts: 116
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: How long 'til 4th bar drops?

Tue Sep 12, 2017 9:27 am

cyberyeh wrote:I bought a 2012 with 37000 miles and 9 bars back in June. Took it to dealer and found out warranty will expire on October 10. LeafSpy shows SOH T 67% and 44.45 AHr. Been quick charging once a day for the past few weeks but not much change. Really hope I'll get to 8 bars before warranty expires.

I don't think there's any way you'll make it, I'm afraid. The highest reported Ahr at 9-bar drop for 2011/2012 is 43.56 Ahr; dropping nearly 1 Ahr in under 30 days seems pretty unlikely.
(I'd be curious to know how your LeafSpy readings changed with quick charging; my own experience with moderate quick charging is that it temporarily raises the Ahr values, and though they eventually drop again, I didn't return to my previous decline trajectory; IOWs the net effect for my car seems to be a delay in reaching lower Ahr values. But, others disagree on this effect.) FWIW, I'm at 43.65Ahr on my 2012, and I have doubts about failure before my February expiration.
OTOH if you got a car which was "reset," there have been reports of very quick and dramatic drops as the BMS recalibrates itself fairly quickly.
My best suggestion would be to look at your readings since June, and extrapolate from there, to see where you're likely to be at in October. if it's in the 44's, no way.
On the upside, there have been several reports of Nissan doing out of warranty replacements with some degree of cost sharing.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

cyberyeh
Posts: 13
Joined: Sat Jun 10, 2017 12:12 am
Delivery Date: 10 Oct 2012
Leaf Number: 020324
Location: San Diego

Re: How long 'til 4th bar drops?

Wed Sep 13, 2017 1:50 pm

You are right, my AHr actually rises after quick charging, and hasn't really changed much since June. I was very careful when I first got the car, always in the garage away from heat and only charge at home at night. Just started quick charging last month. Will call Nissan to find out if they will do any cost sharing if warranty expires. I sure hope they will because 40 miles per charge it's hard to work with.

sandeen
Posts: 116
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: How long 'til 4th bar drops?

Mon Sep 18, 2017 1:30 pm

My 2012 LEAF is killing me. Warranty is up Feb 1. I had been on a fairly steady downhill path, which extrapolated to a new battery, all things being equal. Then a quick charge session bumped me way up, followed by a fairly nice precipitous decline, then a rise, another decline which edged into 4-bar-loss territory, and now on to another rise - back to pretty much where I was 30 days ago. :/
Image
I don't understand what's suddenly causing my numbers to, in the immortal words of The Smiths, oscillate wildly. :)
Hoping for another one of those steep drops after the inexplicable increase. This is one complicated black box they've built!
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

Reddy
Posts: 1437
Joined: Fri Feb 11, 2011 3:09 pm
Delivery Date: 18 Aug 2011
Leaf Number: 006828
Location: Pasco, WA

Re: How long 'til 4th bar drops?

Mon Sep 18, 2017 3:43 pm

sandeen wrote:My 2012 LEAF is killing me. Warranty is up Feb 1. ....
My suggestion is to ship it (or drive it if you've got enough miles) to AZ or FL for the winter. ;) Otherwise, you've pretty much got no chance in MN. Maybe if you kept it in a heated garage and drove the 'ell out of it, but even then you're battling against ambient cold inertia.
Reddy
2011 SL; 9 bar, 46.44 AHr; 40,067 mi; rcv'd Aug 18, 2011
Long: http://www.mynissanleaf.com/viewtopic.p ... al#p226115"
Cold: http://www.mynissanleaf.com/viewtopic.p ... 60#p243033"

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