LeftieBiker
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Re: 2012 Leaf not charging; Lithium cell bad; 12 volt ok

Fri Sep 11, 2020 6:58 pm

That 21mv difference is nothing - there is no evidence so far of a bad cell. See Cwerdna's post for another possibility.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
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cwerdna
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Re: 2012 Leaf not charging; Lithium cell bad; 12 volt ok

Fri Sep 11, 2020 7:21 pm

lavaleaf wrote:
Fri Sep 11, 2020 6:46 pm
Min/avg/max = 3.961 / 3.969 / 3.982 (21mV)
21 mV is TOTALLY within the norm. That wouldn't trigger a turtle nor warning light.

'19 Bolt Premier
'13 Leaf SV w/premium (owned)
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lavaleaf
Posts: 8
Joined: Fri Sep 11, 2020 1:07 pm
Delivery Date: 11 Sep 2020
Leaf Number: 018409

Re: 2012 Leaf not charging; Lithium cell bad; 12 volt ok

Sat Sep 12, 2020 12:35 pm

Interesting that you don't feel that's enough to trigger a turtle or warning light. Good to know, thank you. Maybe the issue really is something else. Sounds like I need to get a copy of the codes the Nissan dealer generated. I don't have confidence in the service person I spoke with. When I asked about the possibility of fixing just the damaged cell, he started talking about how "they don't do that because of the radiation and the special training and suits they have to wear." Huh??

LeftieBiker
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Re: 2012 Leaf not charging; Lithium cell bad; 12 volt ok

Sat Sep 12, 2020 2:41 pm

They are lying to you. Get to another dealer ASAP. I doubt they would have replaced a cell - just charged you thousands for a job not needed and not done.
Interesting that you don't feel that's enough to trigger a turtle or warning light.
You don't understand. It isn't a question of "enough" - you apparently, according to the info provided, have a good normal pack with NO BAD CELLS.
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.

SageBrush
Posts: 5189
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Location: NM

Re: 2012 Leaf not charging; Lithium cell bad; 12 volt ok

Sat Sep 12, 2020 2:52 pm

lavaleaf wrote:
Sat Sep 12, 2020 12:35 pm
Interesting that you don't feel that's enough to trigger a turtle or warning light.
Not a feeling, it is a certainty.

Look at this graph

Image

You can flip the numbers on the X axis to imagine the discharge from full to empty. If you add a zero to the voltage on the Y axis, that is pretty close to cell voltage in milliVolts (mV). **

Good luck identifying the difference in discharge between 3700 and 3680. You can also note that a normal cell voltage does not drop below 3400 mV until it is ~ 93% discharged.


As an aside, it is quite difficult to convince Nissan that a weak cell requires repair. IIRC, people have showed up at dealerships with 500 mV deltas between the weak and average cell and been told all is A OK :lol:

By the way, you should review your warranty booklet. Don't some parts of the car have an 8 yr/100k warranty ?

** the actual cell voltages are ~ 4% *higher*
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

lavaleaf
Posts: 8
Joined: Fri Sep 11, 2020 1:07 pm
Delivery Date: 11 Sep 2020
Leaf Number: 018409

Re: 2012 Leaf not charging; Lithium cell bad; 12 volt ok

Sat Sep 12, 2020 3:45 pm

LeftieBiker and SageBrush, I appreciate this extra information, it has been very helpful. I will review the warranties, as you recommended.

I will leave an update once I know more.

GerryAZ
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Re: 2012 Leaf not charging; Lithium cell bad; 12 volt ok

Sat Sep 12, 2020 4:12 pm

The battery pack has an 8-year, 100,000-mile warranty against defects and a 5-year, 60,000-mile capacity warranty. My interpretation of Nissan's battery warranty is anything inside the case should be covered for 8 years or 100,000 miles unless it is general capacity loss (which is only 5 years or 60,000 miles). The rest of the EV system is covered for 5 years or 60,000 miles so that has expired. The differences between cell voltages are minimal and not causing the "no start" condition.

Gerry
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
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