npav
Posts: 4
Joined: Wed Oct 21, 2015 10:19 am
Delivery Date: 21 Oct 2015

12v battery dies overnight 2013 S

Thu Apr 20, 2017 7:00 am

Hey guys,

I've run into a problem with my 2013 LEAF S. The 12v battery dies overnight, back in November I bought a new 12v battery from AutoZone because the original died and there had been no problems since.

Now a few days ago I go to drive the LEAF and it doesn't start, no lights, no door unlock, nothing, just like when the original battery died. So I figured the 12v was low on charge, so I jump started it and drove around for a while to charge it up.

Next morning it's dead again. So this time I jump it and take it to AutoZone to test the battery, they say it's healthy, just needs a charge, so I plug in the portable Stanley battery charge kit and leave it there for about 3 hours or so. Give it a shot and it starts right up, checked the battery voltage and it shows at just over 13v. Figure that's that and call it a night. Next morning the car won't start again and it registers at just 4v.

So I figure something must be draining the battery and I've dropped it off at the dealership for them to have a look, sadly the 36 month warranty is expired (naturally) and I don't know yet if it will be covered by the 6 year EV systems warranty... Nissan said it will be $80 to find out what is wrong and there are 2 unrelated re-calls on the car, which they will fix while it's in. Interesting side note, while I could have sworn I saw in the warranty booklet in my car that Nissan would provide a loaner car, the dealership repeatedly denied it and I can't find it in the online version of the booklet.

Seems like a major ripoff that they will charge me $35/day when the car is in for re-calls that is Nissan's fault, so now I'm left without a car until they figure out what's going on.

Then again this whole thing could just be a bad battery from AutoZone and they don't want to admit it...

BrockWI
Posts: 574
Joined: Fri Mar 28, 2014 6:28 am
Delivery Date: 28 Mar 2014
Leaf Number: 423875
Location: Green Bay, WI.
Contact: Website

Re: 12v battery dies overnight 2013 S

Thu Apr 20, 2017 7:52 am

There are a couple of threads on this. I also have a 13 S and have the same problem. It is just so random, my guess is something is sticking or staying on for some random reason and runs the 12v dead. The funny thing is the Nissan tech said that can't happen becasue if the car sees the 12v gets low it will automatically start itself and charge the 12v battery from the HV pack. Well.... that doesn't happen. I would believe that the car may sense a low 12v battery condition and then "try" to close the HV contactor to start charging the 12v, but that is also run from the 12v battery and guess what, it's to late and it's already almost dead and trying to close that big contactor just runs it totally flat :)

I so wish I knew what it was, I weekly charge ours now no matter what, but just last Sunday it was dead again, and took 35 amps to get the 12v back to "full".

And before any asks, no I don't leave my leafspy plugged in, I only plug it in when I am actively using it and unplug it afterwards.

This is my biggest pet peeve with this car, and it has happened to my wife out shopping and once at her parents. I keep a 12v 9Ah lead acid in the car all the time now to "jump" it. She had to call me and I had to walk her through how to jump it. She is not happy about that.
3 kw solar pv - XW6048 - 8 L16's
4 ton GSHP
2003 VW TDI 170k miles - 52 mpg lifetime
evse level 2 - Clipper Creek HSC-40
2013 S model with QC package Mar of 2013

User avatar
RegGuheert
Posts: 5617
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: 12v battery dies overnight 2013 S

Thu Apr 20, 2017 11:30 am

npav wrote:Now a few days ago I go to drive the LEAF and it doesn't start, no lights, no door unlock, nothing, just like when the original battery died. So I figured the 12v was low on charge, so I jump started it and drove around for a while to charge it up.

Next morning it's dead again.
A couple of things here: 1) It takes many hours to fully charge a 12V lead-acid battery at 14.4V and 2) The LEAF generally does a very poor job of fully-charging the 12V battery since it drops back to a float voltage of 13.1V prematurely. (There is an indication that this issue may be greatly improved starting with MY2015.)

It's too bad Nissan has left these 12V problems in place for so many years. I know that they are aware of them since I have personally told their management about them.

I now regularly charge the 12V battery in our LEAF using a high-quality desulfating trickle charger. It is almost six years old and it is in like-new condition.
RegGuheert
2011 Leaf SL Demo vehicle
10K miles: Apr 14, 2013, 20K miles (55.7Ah): Aug 7, 2014, 30K miles (52.0Ah): Dec 30, 2015, 40K miles (49.8Ah): Feb 8, 2017, 50K miles (47.2Ah): Dec 7, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

LeftieBiker
Posts: 7373
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 12v battery dies overnight 2013 S

Thu Apr 20, 2017 12:17 pm

Sometimes an issue that seems random has an easily-determined cause. Are you leaving the car plugged in for hours after charging ends? That is not a good idea, with the 2013 especially. It will gradually drain the accessory battery, and the car won't quite keep up with recharging it.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

BenTheRighteous
Posts: 62
Joined: Tue Feb 14, 2017 5:36 am
Delivery Date: 14 Feb 2017
Location: Raleigh, NC

Re: 12v battery dies overnight 2013 S

Thu Apr 20, 2017 1:33 pm

Ok so BrockWI isn't leaving an OBD dongle plugged in overnight but what about OP?
2017 Leaf S
OpenEVSE P50-D WiFi Kit
Raleigh, NC
USA

BrockWI
Posts: 574
Joined: Fri Mar 28, 2014 6:28 am
Delivery Date: 28 Mar 2014
Leaf Number: 423875
Location: Green Bay, WI.
Contact: Website

Re: 12v battery dies overnight 2013 S

Thu Apr 20, 2017 1:49 pm

I don't leave the J1772 plugged in, unless it is going to charge in the am before we leave.

I used to think it was when the windows were down, something with the "alarm" system, but I have ruled that out. Key not in or near the car. I am open to trying anything to figure it out.

It was an odd coincidence but youtube blogger suddenly now has their leaf doing the same thing, also a 2013, but they have the telematics and ours (the S) doesn't or does it ;)

https://www.youtube.com/watch?v=k_EHoLTIIAE

A while ago I started clamp on ampmetering the 12v battery and I believe only once did I see a load stay on. I power cycled the car and it was gone. I didn't hear any pumps running or any fan, I should have really dug in to it when I saw that load. It has run dead in summer and in winter, in rain and dry, garaged and outside, alarmed and shut or just "off" and not alarmed. I agree it is something. I did swap to a larger battery and it is less frequent, but I believe that is becasue it can sit powering that stuck on load longer.
3 kw solar pv - XW6048 - 8 L16's
4 ton GSHP
2003 VW TDI 170k miles - 52 mpg lifetime
evse level 2 - Clipper Creek HSC-40
2013 S model with QC package Mar of 2013

VitaminJ
Posts: 384
Joined: Tue Jan 03, 2017 11:46 am
Delivery Date: 07 Jan 2017
Leaf Number: 415775
Location: Morrison, CO
Contact: YouTube

Re: 12v battery dies overnight 2013 S

Thu Apr 20, 2017 1:52 pm

LeftieBiker wrote:Sometimes an issue that seems random has an easily-determined cause. Are you leaving the car plugged in for hours after charging ends? That is not a good idea, with the 2013 especially. It will gradually drain the accessory battery, and the car won't quite keep up with recharging it.

Yes it has an easily-determined cause: the car was manufactured with a design flaw. Hmmm an electric car shouldn't be left plugged in for hours, yeah that makes sense. I know I wake up in the middle of the night and unplug my cell phone when it's 100% too... And the other design flaw that the onboard DC converter waits until the 12v is too weak to close the relay and contactors before it decides to start charging it. Let's not make excuses for lazy engineering.
2013 Ocean Blue SV w/ QC and LED
- +0.2 mi/kwh Aeromods
- 2lb 5Ah LiFe 12v battery

LeftieBiker
Posts: 7373
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 12v battery dies overnight 2013 S

Thu Apr 20, 2017 3:08 pm

Let's not make excuses for lazy engineering.


I agree that it's a design flaw. Now, how helpful would it have been to just write "The car was poorly designed. Don't buy another Leaf."? Instead I tried to find a way to diagnose and solve the issue, or at least apply a bandaid. If you think I'm a cheerleader or apologist for Nissan, then you haven't been comprehending much of what I write.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

cliff
Posts: 105
Joined: Mon May 13, 2013 10:36 am
Delivery Date: 15 Sep 2012
Leaf Number: 022673
Location: Federal Way, WA

Re: 12v battery dies overnight 2013 S

Fri Apr 21, 2017 2:14 am

There was a post quite a while back about a bad power window switch causing a random
load. I don't remember much about it though.

LeftieBiker
Posts: 7373
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 12v battery dies overnight 2013 S

Fri Apr 21, 2017 3:32 am

The power windows only remain active for 30 seconds after power off, though.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

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