Phatcat73
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Leaf Number: 401511
Location: Buffalo Grove, Il

2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Sun Apr 21, 2013 7:45 am

I've owned my 2013 SV for over a month now. I took it in about 3 weeks after ownership due to waking up to a dead 12-Volt Battery. Dealer replaced the battery. They said the OBC tested fine. Now two weeks later, same thing. My 12-Volt registers 5-Volts on my multimeter.

What would cause the 12-Volt to drain? Doesn't the car "go to deep sleep" after shutting it off? I usually leave my keys in the car (garaged). Does the transponder being in vicinity of the car cause it to drain?

Baffled?!?
2016 SV; purchased 20-Jan-17, <5k, 98% SOH; 01-Apr-17
2013 SV; purchased 6-March-13 44k, 81% SOH; 3-Apr-17
2015 S; purchased 29-July-14, moved to AZ Nov-2014, 19k, 83% SOH; 30-Mar-17
(LD storage) 2009 Ford Escape Hybrid 4x2), 101k

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garygid
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Re: 2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Sun Apr 21, 2013 8:16 am

Do you drive it daily?

Driving or Charging should charge the 12v Battery.

So, I you drive most days, it sounds like the 12v Battery is not getting charged,
or there is an unusual current drain. The dealer should be able to easily measure
the current drain without the "keys" in the car, and see if there is an
abnormal drain. Then, in the same test, toss the keys in and see what happens
to the current.

I would think that the RFID overnight, or for a day, would
not be a problem, but... try not doing that. :D
See SOC/GID-Meter and CAN-Do Info
2011 LEAF, sold in 2015
2010 Prius, 2014 silver Tesla S
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Phatcat73
Posts: 433
Joined: Fri Feb 08, 2013 2:44 pm
Leaf Number: 401511
Location: Buffalo Grove, Il

Re: 2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Sun Apr 21, 2013 9:10 am

I drive it daily and it was plugged to my L2 charger overnight.
2016 SV; purchased 20-Jan-17, <5k, 98% SOH; 01-Apr-17
2013 SV; purchased 6-March-13 44k, 81% SOH; 3-Apr-17
2015 S; purchased 29-July-14, moved to AZ Nov-2014, 19k, 83% SOH; 30-Mar-17
(LD storage) 2009 Ford Escape Hybrid 4x2), 101k

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RegGuheert
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Re: 2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Sun Apr 21, 2013 9:15 am

If you have a voltmeter, I suggest putting the car in READY mode, in park, and measuring the voltage at the battery. You should see either 14.4V or 13.1V. Anything lower than 13.0V in READY mode would seem to indicate the DC-DC converter is not charging the battery properly.

But I do think that leaving the fob in the car overnight might be what is draining the battery in the car. In any case, that will likely drain the battery in the fob.
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

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ampitupco
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Re: 2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Sun Apr 21, 2013 9:24 am

RegGuheert wrote:But I do think that leaving the fob in the car overnight might be what is draining the battery in the car. In any case, that will likely drain the battery in the fob.


I've been doing this for over a year. No issues with my 12v battery or fob battery yet.
ampitupco
2015 LEAF SV
2012 LEAF SL: 33000 miles 229 GID / 55.7Ahr (10/2015) [SOLD]
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TomT
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Re: 2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Sun Apr 21, 2013 9:24 am

I've regularly done this for a long time and it has had no affect on either the fob or the 12 volt battery.

RegGuheert wrote:But I do think that leaving the fob in the car overnight might be what is draining the battery in the car. In any case, that will likely drain the battery in the fob.
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. Model 3 configured.

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Ingineer
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Re: 2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Sun Apr 21, 2013 9:32 am

The OBC does not charge the 12V battery, ever. The component that does is the DC-DC converter. It's right under the aluminum cover next to the OBC, but it's a different beast. Easy enough to check it as others have already posted.

I'd suggest NOT leaving the fob in or near the car. Keep it with your wallet inside.

-Phil
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Phatcat73
Posts: 433
Joined: Fri Feb 08, 2013 2:44 pm
Leaf Number: 401511
Location: Buffalo Grove, Il

Re: 2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Sun Apr 21, 2013 11:22 am

RegGuheert wrote:If you have a voltmeter, I suggest putting the car in READY mode, in park, and measuring the voltage at the battery. You should see either 14.4V or 13.1V. Anything lower than 13.0V in READY mode would seem to indicate the DC-DC converter is not charging the battery properly.

But I do think that leaving the fob in the car overnight might be what is draining the battery in the car. In any case, that will likely drain the battery in the fob.


Thanks. Great idea. I put it in ready mode mode and read 14.4 Volts. I'm at a loss. I'll keep the fob out of the car and see if that changes anything.

Any other ideas? Should the Leaf go into deep sleep as most cars do after X minutes? My Escape goes into a deep sleep after 12 minutes. Door ajar light, headlights, etc... all shut off.
2016 SV; purchased 20-Jan-17, <5k, 98% SOH; 01-Apr-17
2013 SV; purchased 6-March-13 44k, 81% SOH; 3-Apr-17
2015 S; purchased 29-July-14, moved to AZ Nov-2014, 19k, 83% SOH; 30-Mar-17
(LD storage) 2009 Ford Escape Hybrid 4x2), 101k

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Nubo
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Location: Vallejo, CA

Re: 2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Sun Apr 21, 2013 1:18 pm

Sounds like there is a ghost load somewhere. May take a bit of detective work with a meter to track down which circuit is involved.
I noticed you're still working with polymers.

Phatcat73
Posts: 433
Joined: Fri Feb 08, 2013 2:44 pm
Leaf Number: 401511
Location: Buffalo Grove, Il

Re: 2013 Leaf - Dead 12-Volt Battery every 2 Weeks

Thu Apr 25, 2013 7:44 am

Dead again this morning - 12V registered 5V and I needed another jump. This time I didn't leave the key fob in the car all week since the last time it died - 4 days ago. It appears to only die in my garage overnight, whether the car is plugged to my L2 or not. This morning I also had a 72% charge whereas I normally set it to charge to 80%.

She's going in tomorrow. This will be my 5th trip to the service dept since purchasing the Leaf on 3/6. I still love the car, but am seriously concerned at driving one of the first production cars out of Smyrna. Car was built on 1/24.
2016 SV; purchased 20-Jan-17, <5k, 98% SOH; 01-Apr-17
2013 SV; purchased 6-March-13 44k, 81% SOH; 3-Apr-17
2015 S; purchased 29-July-14, moved to AZ Nov-2014, 19k, 83% SOH; 30-Mar-17
(LD storage) 2009 Ford Escape Hybrid 4x2), 101k

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