jimmol
Posts: 7
Joined: Wed Aug 16, 2017 9:40 am
Delivery Date: 16 Aug 2017
Leaf Number: 318723

12 volt Battery dying while charging leaf

Wed Aug 15, 2018 11:39 am

Anyone ever had their 12 volt die while their leaf was charging overnight? Is it time for a new battery or is something else wrong?

2015 Leaf, Clipper Creek 30 amp L2 charger
Summary:
Yellow car appears after first start, then not again until the next day. Drive car for a week, charging at night. Then
12 volt battery drain while car is charging overnight, charging stops at 22.1kW instead of 22.6kW
Filled battery with distilled water, charged, drove for several days, 12 volt battery showed 12.6 volts or more before start and charge of 2 to 8 amps the first mile.
12 volt battery drains AGAIN while car is charging, charging stops at 22.1kW instead of 22.6kW, 6 volts remaining. Hook up portable jump box, plugged it back in and it started charging, showing 78 amps behind the 14.4 on LeafSpy. Drove the ICE to work.

After 2 hours it was driven and returned home. Sat for 3 hours and 12 volt bat is 12.16 volts.

Narrative:
The Yellow car with the ! had started showing up first trip of the day, then would be off after that. The codes the would show on spy leaf would be the P3131, U1232, the U1A00. Tried a google search on the p3131, then finally here. OK, could be TCU problem, but it was only in the morning. Drove for a week with the same thing first trip of the day - I first noticed it after charging - and would not appear till the next.

Last Friday, after charging the car all night, I unplugged the car and went to start it and nothing. Door nail mode. I suspected the battery so I grabbed the portable jump box and hooked it up. Opened the door, pressed the start and the instrument panel list up but there was no tune and it would not go into drive (just testing - I did have the hood up and the jumper box connected). I pulled out LeafSpy and read the DTCs. I noticed it was charged to 22.1 instead of the usual 22.6 kW, hmm. Hooked it back up to the level 2 charger and nothing. Unplugged the L2. Unplugged the jump box. Forgot to look at the battery charge on LeafSpy. I would share with you a picture of the codes showing but there is no way to add a picture that I can tell.

I decided to check the fluid level and found the first cell to be showing, cells 2 - 5 were just above the cell. I added distilled water and hooked up my regular charger. (Yes I now realized I should have charged and then added water (as it says on the internet) but nothing leaked out). The next morning the battery was charged and ready to go.

The car ran fine. SpyLeaf was showing a charge to my 12 volt from 8 to 4 amps for the first mile and then nothing. Every time I started it the next couple of day it did the same thing, charged and leveled off. Lowest battery ever got was 12.56 while off was.

I charged it last night and as I left for work in the ICE auto, I pulled out my LeafSpy as I passed it and it was showing 6 volts. Got out the portable jump box and hooked it up. LeafSpy also show 22.1kW. This time I was able to plug it in and the dash charging lights came on and started charging the drive battery. I unplugged the jump box and it kept on charging. The battery showed 14.47 v and 78 amps charge - which I assume in the amps to the drive battery getting it up to 22.6kW. After 2 hour my wife unplugged it and everything was fine.

Noticed it was down to 12.16 volts after sitting for 3 hours. I read from one site that if a cell of a 12 volts gets exposed to air, it can become damaged and not hold the charge as well, or something to that effect. My first cell had the top of it exposed, no liquid over it.

After 6 hours it is down to 11.76 volts.

DTCs showing are probably expected for this condition:
U1000 008 BCM CAN Comm Circuit,
B2562 - BCM Low Voltage BCS-69,
U100A 8708 CHARGER,
VE/HEV codes P3100, 3131, 3178, 3180, 317B, 317E,
P0A8D 008 Motor Control 14v Power Supply EVC-123/TMS63,
P3247 Motor Control Drive Motor Inverter TMS-91,
U1000 0008 TCU CAN COMM CIRCUIT AND ACC No Con Av-194
Last edited by jimmol on Wed Aug 15, 2018 6:36 pm, edited 2 times in total.

LeftieBiker
Posts: 9587
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 12 volt Battery dying while charging leaf

Wed Aug 15, 2018 1:07 pm

How long is the car plugged in but not charging? Leaving it that way for many hours can kill the 12 volt battery (the car keeps testing the connection while plugged in, using accessory power), but I'm not sure that this is the issue here.
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.

jimmol
Posts: 7
Joined: Wed Aug 16, 2017 9:40 am
Delivery Date: 16 Aug 2017
Leaf Number: 318723

Re: 12 volt Battery dying while charging leaf

Wed Aug 15, 2018 1:34 pm

It is plugged in when we get home in the evening and the first time it was noon before we unplugged it. The second time the same so about 16 hours.

LeftieBiker
Posts: 9587
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 12 volt Battery dying while charging leaf

Wed Aug 15, 2018 7:03 pm

Leaving it plugged in but not charging for 16 hours a day could easily kill the battery. Not the first time, maybe, but regularly.
Last edited by LeftieBiker on Wed Aug 15, 2018 10:27 pm, edited 1 time in total.
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.

thimel
Posts: 132
Joined: Fri Apr 23, 2010 6:10 pm
Delivery Date: 11 Jun 2011
Location: SF bay area

Re: 12 volt Battery dying while charging leaf

Wed Aug 15, 2018 8:23 pm

It is almost undoubtedly a bad 12 V battery. The LEAF never charges it fully so it dies young. I charge mine with a trickle charger once a week to extend its life. When the 12 V battery is bad, all sorts of weird trouble codes show up. There are many posts on this forum about theses problems.

cwerdna
Posts: 8282
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: 12 volt Battery dying while charging leaf

Wed Aug 15, 2018 11:09 pm

jimmol wrote:charging stops at 22.1kW instead of 22.6kW
...
,charging stops at 22.1kW instead of 22.6kW, 6 volts remaining.

Your post is confusing. What are you talking about when you keep talking about "22.6 kW" and "22.1 kW"?

Are you talking about kWh? Where are you getting these numbers from? kW is a unit of power. kWh is a unit of energy. Leaf has a 24 kWh battery when new with about 21 to 22 kWh user accessible when new. Maybe refer to viewtopic.php?p=520169#p520169?

Leaf doesn't have higher than a 6.6 kW on-board charger.

Also, the Clipper Creek unit you refer to isn't a "charger". It's an EVSE. Please see viewtopic.php?f=6&t=14728&p=332668#p332668 and diagram by planet4ever at https://web.archive.org/web/20180807195 ... p?p=262630. The L1 and L2 AC charging over J1772, the charger is on-board the car.

I agree that it sounds like the 12 volt is toast. My 5/2013 built '13 Leaf which I bought used in July 2015 had its 12 volt bite the dust in Oct 2015 (viewtopic.php?p=440419#p440419).

'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

baustin
Posts: 672
Joined: Tue Feb 24, 2015 1:23 pm
Delivery Date: 09 Mar 2015
Leaf Number: 402162
Location: North Las Vegas, NV

Re: 12 volt Battery dying while charging leaf

Thu Aug 16, 2018 3:07 am

Where are you located? Hot climates kill batteries faster. Your description indicates you have a failing 12v battery. Replace it with an AGM style battery, and your problems should go away.
2013 Leaf SV - Cayenne Red - QC Port - LED Headlights

jimmol
Posts: 7
Joined: Wed Aug 16, 2017 9:40 am
Delivery Date: 16 Aug 2017
Leaf Number: 318723

Re: 12 volt Battery dying while charging leaf

Thu Aug 16, 2018 7:39 am

cwerdna wrote:
jimmol wrote:charging stops at 22.1kW instead of 22.6kW
...
,charging stops at 22.1kW instead of 22.6kW, 6 volts remaining.

Your post is confusing. What are you talking about when you keep talking about "22.6 kW" and "22.1 kW"?

Are you talking about kWh? Where are you getting these numbers from? kW is a unit of power. kWh is a unit of energy. Leaf has a 24 kWh battery when new with about 21 to 22 kWh user accessible when new. Maybe refer to http://www.mynissanleaf.com/viewtopic.p ... 69#p520169?

Leaf doesn't have higher than a 6.6 kW on-board charger.

Also, the Clipper Creek unit you refer to isn't a "charger". It's an EVSE. Please see http://www.mynissanleaf.com/viewtopic.p ... 68#p332668 and diagram by planet4ever at https://web.archive.org/web/20180807195 ... p?p=262630. The L1 and L2 AC charging over J1772, the charger is on-board the car.

I agree that it sounds like the 12 volt is toast. My 5/2013 built '13 Leaf which I bought used in July 2015 had its 12 volt bite the dust in Oct 2015 (http://www.mynissanleaf.com/viewtopic.p ... 19#p440419).


I guess I was trying to be thorough. LeafSpy shows that my car has 22.6 kW available at the end of a full charging session. The kW info was added in case someone reading the post had an Aha! moment, realizing that ___________ was the reason the leaf would stop charging, or receiving electricity to covert to charge, before it usually does. Obviously that did not happen.

Thanks for the point back to the correct terminology, though sometimes is has been easier to call it a charger when talking to someone who knows nothing about electric cars, but now I could call it the conduit for electricity to go into the car charger. Truthfully, I forget what EVSE stands for...Electrical Vehicle S______ E_____. Getting older and more forgetful.

From what you and other are saying, I bought a new battery and will see what happens.

Thanks for your input.

jimmol
Posts: 7
Joined: Wed Aug 16, 2017 9:40 am
Delivery Date: 16 Aug 2017
Leaf Number: 318723

Re: 12 volt Battery dying while charging leaf

Thu Aug 16, 2018 7:41 am

baustin wrote:Where are you located? Hot climates kill batteries faster. Your description indicates you have a failing 12v battery. Replace it with an AGM style battery, and your problems should go away.


I am trying to find the location I can put in under profile, but I cannot.

I live in Michigan.

I did buy the Optima yellow top and it is in the car.

Now to charge the main battery.

jimmol
Posts: 7
Joined: Wed Aug 16, 2017 9:40 am
Delivery Date: 16 Aug 2017
Leaf Number: 318723

Re: 12 volt Battery dying while charging leaf

Thu Aug 16, 2018 7:42 am

Thanks to all who have advised me.

New battery in place and we will see what happened.

Jim

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