JonO
Posts: 16
Joined: Sat Dec 07, 2013 1:39 pm
Delivery Date: 25 Jan 2014
Leaf Number: 003530
Location: Manitoba, Canada

Re: Bad Cell in Leaf Spy: What to do about it?

Wed Feb 17, 2016 6:28 pm

Okay, hope I'm not out of line here. My 2011, with about 20K kms, SOH 90% has been showing a few weak cells. Always #s 1 and 48, and a few others. Delta as high as 200. I always check when parked, and it invariably shows up when 20% SOC or lower. Is this a warranty issue?
2011 Leaf SL
Silver Gray
12,000 kms, minty!
Using LeafSpy Pro since the launch of the iPhone version (Mar 2015)

ElectricEddy
Posts: 374
Joined: Tue Feb 25, 2014 1:42 pm
Delivery Date: 31 Oct 2016
Leaf Number: 313506
Location: Nanaimo, B.C.

Re: Bad Cell in Leaf Spy: What to do about it?

Thu Feb 18, 2016 6:17 pm

JonO wrote:Okay, hope I'm not out of line here. My 2011, with about 20K kms, SOH 90% has been showing a few weak cells. Always #s 1 and 48, and a few others. Delta as high as 200. I always check when parked, and it invariably shows up when 20% SOC or lower. Is this a warranty issue?

What is the lowest cell voltage? ( must be 3.712V or lower AND any cell which is below the average cell voltage by more than 150% of the difference between the maximum cell voltage and the average cell voltage is considered "bad". Good write up here: viewtopic.php?f=9&t=17676&start=10
Pearl White Sl
mfd date 09/16

JonO
Posts: 16
Joined: Sat Dec 07, 2013 1:39 pm
Delivery Date: 25 Jan 2014
Leaf Number: 003530
Location: Manitoba, Canada

Re: Bad Cell in Leaf Spy: What to do about it?

Thu Feb 18, 2016 7:16 pm

Definitely meets that criteria!
2011 Leaf SL
Silver Gray
12,000 kms, minty!
Using LeafSpy Pro since the launch of the iPhone version (Mar 2015)

QueenBee
Posts: 1564
Joined: Sun Aug 08, 2010 5:14 pm
Delivery Date: 20 Jun 2011
Leaf Number: 2062
Location: Bellevue (Seattle), WA

Re: Bad Cell in Leaf Spy: What to do about it?

Thu Feb 18, 2016 11:17 pm

JonO wrote:Definitely meets that criteria!

The criteria for warranty replacement? Cite your source. In my experience they say if you aren't throwing codes or you have lost 4 bars in 5 years/60k Nissan isn't going to do anything.

Valdemar
Posts: 2412
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Bad Cell in Leaf Spy: What to do about it?

Fri Feb 19, 2016 12:07 am

QueenBee wrote:
JonO wrote:Definitely meets that criteria!

The criteria for warranty replacement? Cite your source. In my experience they say if you aren't throwing codes or you have lost 4 bars in 5 years/60k Nissan isn't going to do anything.


+1.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB)
59.7AHr, SOH 93%, 118k miles
9kW Solar

JonO
Posts: 16
Joined: Sat Dec 07, 2013 1:39 pm
Delivery Date: 25 Jan 2014
Leaf Number: 003530
Location: Manitoba, Canada

Re: Bad Cell in Leaf Spy: What to do about it?

Fri Feb 19, 2016 11:57 am

I was going on the post that gave the calculation of a bad cell based on it being 1.5 X greater than the dif between the highest cell and the average value. I will check at 3.7 avg volts now to see where my highest and lowest cells fall out. A note, cells 1 and 48 are always the first ones to show up weak. They happen to be at either end of the battery stack under the back seat, also 96 shows weak often. Must be connections or a design flaw is my best guess.
2011 Leaf SL
Silver Gray
12,000 kms, minty!
Using LeafSpy Pro since the launch of the iPhone version (Mar 2015)

QueenBee
Posts: 1564
Joined: Sun Aug 08, 2010 5:14 pm
Delivery Date: 20 Jun 2011
Leaf Number: 2062
Location: Bellevue (Seattle), WA

Re: Bad Cell in Leaf Spy: What to do about it?

Fri Feb 19, 2016 9:53 pm

JonO wrote:I was going on the post that gave the calculation of a bad cell based on it being 1.5 X greater than the dif between the highest cell and the average value. I will check at 3.7 avg volts now to see where my highest and lowest cells fall out. A note, cells 1 and 48 are always the first ones to show up weak. They happen to be at either end of the battery stack under the back seat, also 96 shows weak often. Must be connections or a design flaw is my best guess.


Sure there is a calculation that can determine the bad/weak cells, the CVLI test but that doesn't mean Nissan is going to replace anything based on it...

JonO
Posts: 16
Joined: Sat Dec 07, 2013 1:39 pm
Delivery Date: 25 Jan 2014
Leaf Number: 003530
Location: Manitoba, Canada

Re: Bad Cell in Leaf Spy: What to do about it?

Sat Feb 20, 2016 7:07 am

I guess I'm grasping at straws then. I don't believe the class action law suit on the first batteries extends into Canada. But if cells fail completely the warranty should kick in, I would hope.
2011 Leaf SL
Silver Gray
12,000 kms, minty!
Using LeafSpy Pro since the launch of the iPhone version (Mar 2015)

Turbo3
Gold Member
Posts: 1835
Joined: Mon Jul 19, 2010 8:34 pm
Delivery Date: 12 May 2011
Leaf Number: 002191
Location: San Jose, CA

Re: Bad Cell in Leaf Spy: What to do about it?

Sat Feb 20, 2016 8:59 am

A weak cell and a failed cell are two totally different things. A failed cell would cause a DTC which if under warranty would need to be fixed for free. A weak cell that does not cause you to loose the fourth capacity bar will not be fixed.

LeafSpy just tells you the condition of the battery. You can't use its findings to get a battery replaced. But if you are looking at buying a used Leaf and LeafSpy is telling you it has weak cells you might keep looking.

TimLee
Posts: 2810
Joined: Thu Jan 20, 2011 9:40 am
Delivery Date: 17 May 2011
Leaf Number: 2026
Location: Chattanooga, TN

Re: Bad Cell in Leaf Spy: What to do about it?

Sat Feb 20, 2016 6:35 pm

QueenBee wrote:... Sure there is a calculation that can determine the bad/weak cells, the CVLI test but that doesn't mean Nissan is going to replace anything based on it...

The 2011 service manual CVLI procedure was a test for review of battery condition when fault codes are not present. The procedure did say to replace modules containing cells that don't pass the criteria. But the manual says "performed to identify cells that the cell voltage is on the decrease (although not judged as malfunction in DTC) and this may lead to a malfunction, if left stand."

But I agree that Nissan decided the criteria was too stringent, and took it out of future manuals.

Very unlikely Nissan has done many module replacements based on CVLI.

Tim Lee
Chattanooga, TN

Man. Date: 03/10/11, VIN # 2026
Delivered 05-17-2011
Blue Ocean, 2011 SL-eTec

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