nrvous
Posts: 32
Joined: Sat Sep 08, 2018 3:12 pm
Delivery Date: 08 Sep 2018

The Cold Weather is Here

Tue Nov 20, 2018 8:06 pm

Hi all,

2018 Leaf S owner here and for the first time since I've owned the car overnight lows will dip to about 14F for us here in NJ.

From what I have read in the owner's manual, the car should be left plugged in if temps are expected to hit -4F and not to leave the car in temps below -13F for extended periods.

Outside of that, I can't find in the manual any reason car needs to be plugged in. The only reason I can think of is if I want to use one of the climate timers to heat the car in the morning or something.

Given an overnight low of 14F, is if there is any benefit to leaving the car plugged in overnight? Is it OK to leave unplugged as long as temps don't get to -4F? Car is parked outside.

Thanks!

alozzy
Posts: 1196
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: The Cold Weather is Here

Tue Nov 20, 2018 8:47 pm

That warning is all about the battery pack. It should be fine at 14F - I wouldn't worry about it
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
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Loving my first BEV :D

nrvous
Posts: 32
Joined: Sat Sep 08, 2018 3:12 pm
Delivery Date: 08 Sep 2018

Re: The Cold Weather is Here

Tue Nov 20, 2018 8:56 pm

Thanks! I appreciate the reply.

LeftieBiker
Posts: 9772
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The Cold Weather is Here

Wed Nov 21, 2018 1:24 pm

It used to be that leaving a Leaf plugged in but not charging would drain the 12 volt battery over 24-48 hours. They seem to have solved that Gen I problem in 2014, but we don't yet know for certain that the 2018 is immune.
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.

kuroneko
Posts: 24
Joined: Sat Oct 27, 2018 6:48 pm
Delivery Date: 25 Oct 2018
Leaf Number: 401505
Location: Somerset County, NJ

Re: The Cold Weather is Here

Thu Nov 22, 2018 8:15 am

LeftieBiker wrote:It used to be that leaving a Leaf plugged in but not charging would drain the 12 volt battery over 24-48 hours. They seem to have solved that Gen I problem in 2014, but we don't yet know for certain that the 2018 is immune.


Good to know. I'll have to remember to unplug mine when it's done charging.
01/2013 Leaf SV 9/12 bars left

nrvous
Posts: 32
Joined: Sat Sep 08, 2018 3:12 pm
Delivery Date: 08 Sep 2018

Re: The Cold Weather is Here

Thu Nov 22, 2018 8:50 am

From page 5-141 of the 2018 Owner's Manual:

NOTE:
• Connect the charger to the vehicle and place the power switch in the OFF position when parking the vehicle if temperatures may go below -4°F (-20°C). This provides external power to the Li- ion battery warmer (if so equipped) when it operates and does not dis- charge the Li-ion battery. Vehicle driving range is reduced if the Li-ion battery warmer (if so equipped) operates (Li-ion battery temperature approximately -4°F (-20°C) or colder) while driving the vehicle. You may need to charge the Li- ion battery sooner than in warmer temperatures.


How do you know if you have the optional Li-ion battery Warmer?

jjeff
Posts: 1732
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: The Cold Weather is Here

Thu Nov 22, 2018 9:12 am

nrvous wrote:From page 5-141 of the 2018 Owner's Manual:

NOTE:
• Connect the charger to the vehicle and place the power switch in the OFF position when parking the vehicle if temperatures may go below -4°F (-20°C). This provides external power to the Li- ion battery warmer (if so equipped) when it operates and does not dis- charge the Li-ion battery. Vehicle driving range is reduced if the Li-ion battery warmer (if so equipped) operates (Li-ion battery temperature approximately -4°F (-20°C) or colder) while driving the vehicle. You may need to charge the Li- ion battery sooner than in warmer temperatures.


How do you know if you have the optional Li-ion battery Warmer?

AFAIK all N. American Leafs have the heater, the only Leafs where it was an option was '11. Now other areas it may be an option but not in N. America.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

nrvous
Posts: 32
Joined: Sat Sep 08, 2018 3:12 pm
Delivery Date: 08 Sep 2018

Re: The Cold Weather is Here

Thu Nov 22, 2018 9:20 am

Thanks, I appreciate it. Too bad there isn't some definitive way to know. I guess if it ever gets to -4F here and the car is plugged in, I can look at my EVSEs reporting capability to see if it supplied power to the car during that time.

jjeff
Posts: 1732
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: The Cold Weather is Here

Thu Nov 22, 2018 11:28 am

nrvous wrote:Thanks, I appreciate it. Too bad there isn't some definitive way to know. I guess if it ever gets to -4F here and the car is plugged in, I can look at my EVSEs reporting capability to see if it supplied power to the car during that time.

Good idea. I'll probably be looking into that too as my '12SL will be sitting outside unused this winter in MN, where it can get -20F :(
I wanted to garage it but not enough room :oops:
We're not going to need it this winter so I'll be dropping the insurance. I don't think I'm going to leave it plugged in all the time but rather when in the single digits or below(F) I'll just plug it in a couple times/week and see how low the battery shows. Not ideal but just no garage space :(
If it truly draws 300w continuously in sub-zero temps, I'm guessing it could cost a bit in electricity to store it outside. I wonder if it's not driven if it really matters, I mean would the battery freeze? I have other Li batteries such as in a power drill that can sit outside in sub-zero temps and I haven't had an issue with those freezing......of course I wouldn't want to permanently damage the battery and if a bit of electricity would stop that, it would be a small price to pay.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

LeftieBiker
Posts: 9772
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The Cold Weather is Here

Thu Nov 22, 2018 1:21 pm

You definitely don't want the battery to freeze but there should be plenty of warning that the battery warmer is draining the pack. The warmer generally runs when the pack temp (not the ambient temp) gets down to high single digits Fahrenheit.
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.

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