Computerizer
Posts: 189
Joined: Fri Dec 21, 2012 2:13 pm
Delivery Date: 19 Dec 2012
Location: Bellingham, WA, US

Dead 12V Battery Overnight??

Sat Sep 14, 2013 12:26 pm

Yesterday morning my wife took her 2013 to town and back, and plugged it in when she got home. Several hours later, we unplugged it and plugged in the 2012 instead as we'd taken it to town in the afternoon.

This morning I went out to get something from the 2013 and found that the 12V battery was completely dead. Nothing in the car was alive at all -- no lights, couldn't turn it on, etc.

I jumped it with the 2012 and it's now sitting in the garage in "READY to drive" for at least 20 minutes, as the manual states in the jumping instructions, to charge the 12V battery back up.

Any idea what could have caused the 12V battery to die in less than 24 hours? There were no lights on in the car or anything, it was just sitting there.
Tyrel Haveman
Founder of North Sound Electric Vehicle Association
2013 LEAF SL (Brilliant Silver); Prev: 2016 Kia Soul EV+ (Titanium Grey); 2013 LEAF SV (Blue Ocean), 2012 LEAF SL (Glacier Pearl)
100% Solar PV (12.125 kW ground-mount)
Bellingham, WA

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RegGuheert
Posts: 6294
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: Dead 12V Battery Overnight??

Sat Sep 14, 2013 1:09 pm

Computerizer wrote:I jumped it with the 2012 and it's now sitting in the garage in "READY to drive" for at least 20 minutes, as the manual states in the jumping instructions, to charge the 12V battery back up.
It is not possible to fully recharge a 12V lead-acid battery in 20 minutes. (At least not the kind in the LEAF using the charging system in the LEAF.). Unfortunately, the way the LEAF charging system works, it may NEVER get fully recharged, no matter how long you leave it in READY mode.
Computerizer wrote:Any idea what could have caused the 12V battery to die in less than 24 hours? There were no lights on in the car or anything, it was just sitting there.
It could just be a bad battery. I would definitely try to get Nissan to replace it. I would not drive the LEAF with a bad 12V battery given some of the reports of strange things that can happen in that case.

But it could also be an issue with the car itself. The most obvious issue is that the charging system in the LEAF is not good at fully recharging the 12V battery. But there are other possibilities. One 2013 came from the dealership with a loose battery terminal. I recommend you check that. Finally, there could be a problem with the DC-DC converter that charges the 12V battery. That is highly unlikely, given that we have no reports of a failure of that part of the LEAF.

If you have a battery maintainer, I recommend using that to fully charge the LEAF battery, as several of us have decided to do given the poor charging characteristics of the LEAF. If you don't have one, you may be able to borrow it from a neighbor.

Good luck!
RegGuheert
2011 Leaf SL Demo vehicle
10K mi. on 041413; 20K mi. (55.7Ah) on 080714; 30K mi. (52.0Ah) on 123015; 40K mi. (49.8Ah) on 020817; 50K mi. (47.2Ah) on 120717; 60K mi. (43.66Ah) on 091918.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

voganni
Posts: 59
Joined: Sat Jul 20, 2013 9:43 pm
Delivery Date: 19 Jul 2013
Leaf Number: 412015

Re: Dead 12V Battery Overnight??

Sun Sep 15, 2013 8:57 pm

Welcome to the club! My 2013 has now drained it's battery 3 times in less than 2 months. If the battery wasn't bad when new, it appears to be now. The Leaf's DC-DC appears to have plenty of power, but they don't let it stay up in the 14.4 volt range long enough to get the battery charged and keep it that way. I have installed a battery tender plug in the charge port so I can keep the battery charging. Just sitting overnight it was down to 12.04 volts this morning, about 50% dead. My dealer says they haven't had any problems.........I have contacted Nissan and have a case #. They are supposed to get back to me next week. Very frustrating.

Computerizer
Posts: 189
Joined: Fri Dec 21, 2012 2:13 pm
Delivery Date: 19 Dec 2012
Location: Bellingham, WA, US

Re: Dead 12V Battery Overnight??

Sun Sep 15, 2013 9:06 pm

After letting the car sit in "READY" mode for about half an hour, I turned it off then into accessory mode, and it seemed to have enough power, so it did recharge the battery somewhat -- or it got charged while I was jumping it. In any case, after another 24 hours passed, the battery still had a charge, so it got enough for now anyway.

I figure if it does it again we'll take it to the dealer and have them test it.

Tyrel
Tyrel Haveman
Founder of North Sound Electric Vehicle Association
2013 LEAF SL (Brilliant Silver); Prev: 2016 Kia Soul EV+ (Titanium Grey); 2013 LEAF SV (Blue Ocean), 2012 LEAF SL (Glacier Pearl)
100% Solar PV (12.125 kW ground-mount)
Bellingham, WA

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RegGuheert
Posts: 6294
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: Dead 12V Battery Overnight??

Mon Sep 16, 2013 2:11 am

voganni wrote:The Leaf's DC-DC appears to have plenty of power, but they don't let it stay up in the 14.4 volt range long enough to get the battery charged and keep it that way.
Your analysis is dead-on. Nissan has known about this issue for at least a year, if not longer, yet they did nothing to resolve it in the 2013s.
Computerizer wrote:After letting the car sit in "READY" mode for about half an hour, I turned it off then into accessory mode, and it seemed to have enough power, so it did recharge the battery somewhat -- or it got charged while I was jumping it. In any case, after another 24 hours passed, the battery still had a charge, so it got enough for now anyway.

I figure if it does it again we'll take it to the dealer and have them test it.

Tyrel
The problem is that a lead-acid battery will permantly lose capacity if not FULLY recharged at least every few days or so. In its current condition, your LEAF could possibly leave you stranded at any time. You really should check and fully charge your 12V battery.
RegGuheert
2011 Leaf SL Demo vehicle
10K mi. on 041413; 20K mi. (55.7Ah) on 080714; 30K mi. (52.0Ah) on 123015; 40K mi. (49.8Ah) on 020817; 50K mi. (47.2Ah) on 120717; 60K mi. (43.66Ah) on 091918.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

leaf037
Posts: 1
Joined: Fri Nov 22, 2013 7:41 am
Delivery Date: 18 Nov 2013
Leaf Number: 419044

Re: Dead 12V Battery Overnight??

Fri Nov 22, 2013 7:45 am

I'm going to let my self into the dead battery club. I've had my leaf for 6 days now. Last night after work, came in and charged it on the 220v charger. This morning, I got nothing. Wont start, no lights. This darned thing is kept in a warm garage and only has 250 miles on it. It's pretty clear to me that you'll need to carry a spare battery if you're going drive a leaf. Too bad I bought it instead of leased. I'm going to ask that they give me a spare battery once I get to the dealer. What a load of bull ****.

MikeD
Posts: 655
Joined: Thu Jun 24, 2010 6:14 am
Delivery Date: 12 May 2011
Leaf Number: 592

Re: Dead 12V Battery Overnight??

Fri Nov 22, 2013 7:51 am

leaf037: You wrote "It's pretty clear to me that you'll need to carry a spare battery if you're going drive a leaf.".

Have you ever not been able to start your ICE car? Was it your conclusion then that you needed to carry a spare battery?

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EVDRIVER
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Joined: Sat Apr 24, 2010 7:51 am

Re: Dead 12V Battery Overnight??

Fri Nov 22, 2013 7:56 am

Almost three years on my 12V, leave it parked for long periods. Never a single issue, never touch it.

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mwalsh
Posts: 9506
Joined: Thu Apr 22, 2010 10:10 am
Delivery Date: 05 Jan 2011
Leaf Number: 0213
Location: Garden Grove, CA

Re: Dead 12V Battery Overnight??

Fri Nov 22, 2013 8:03 am

Mine has always indicated a lower than ideal voltage, unless checked immediately after the car has been used. But it hasn't failed...yet.
2011 Blue Ocean SL with 76,000 miles.
2015 pack under warranty 12/30/15.
Tinted windows.
Bridgestone Ecopia 422+ tires.
L1 EVSE upgrade.
FIAMM horns.
Superbright LED lighting.
2013 sun visors.
LED shifter.
Heated seats.
GT-R map lamp lenses.
AV L2 EVSE.

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TomT
Posts: 10605
Joined: Sun Aug 08, 2010 12:09 pm
Delivery Date: 01 Mar 2011
Leaf Number: 000360
Location: California, now Georgia
Contact: Website

Re: Dead 12V Battery Overnight??

Fri Nov 22, 2013 8:08 am

Same here. At my two year battery check, it got a perfect grade with still excellent CCA capacity... I think Nissan is simply either using a cheaper and lower quality battery these days or they have had a bad run of them...

EVDRIVER wrote:Almost three years on my 12V, leave it parked for long periods. Never a single issue, never touch it.
59,991 miles/12 bars/289 Gids/68.54 AHr/101% SOH/101.64% Hx 7May15 w/ new Lizard (barely made the warranty).
71,770 miles/12 bars/256 Gids/59.04 AHr/88% SOH/87.92% Hx 3Mar16 at lease return.

Now driving a 2016 Volt Premier.

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