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 Post subject: Charging battery in cold weather?
PostPosted: Sun Nov 12, 2017 8:04 am 
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Joined: Sun Nov 12, 2017 8:00 am
Posts: 10
I just got a delivery of my brand new 2017 e-golf! I am loving it!
I just want to clarify some tips about preserving battery life. I recently came across this: https://electronics.stackexchange.com/q ... -harm-them

It claims charging battery in cold weather will permanently damage it. Is this true? I live in Canada, and will have -20 degree winter days coming, and don't have indoor garage. Am I screwed?


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 Post subject: Re: Charging battery in cold weather?
PostPosted: Sun Nov 12, 2017 2:12 pm 
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Joined: Mon Oct 05, 2015 2:01 pm
Posts: 1896
egolf39 wrote:
I just got a delivery of my brand new 2017 e-golf! I am loving it!
I just want to clarify some tips about preserving battery life. I recently came across this: https://electronics.stackexchange.com/q ... -harm-them

It claims charging battery in cold weather will permanently damage it. Is this true? I live in Canada, and will have -20 degree winter days coming, and don't have indoor garage. Am I screwed?


Do you really think VW would sell an e-Golf in Norway or Canada if the battery could get damaged recharging in your local temperatures? How about you read the owners manual and see what it says regarding temperatures and recharging.

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 Post subject: Re: Charging battery in cold weather?
PostPosted: Sun Nov 12, 2017 8:09 pm 
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Joined: Sun Nov 12, 2017 8:00 am
Posts: 10
My owner's manual does say that if leaving car parked in -27C or below temperature can freeze battery and cannot start electric motor, but does not say anything about not able to charge the battery. I guess, it's rare to see -27C temperature here, I try to charge it during the day when it is warm.


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 Post subject: Re: Charging battery in cold weather?
PostPosted: Mon Nov 13, 2017 8:12 pm 
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Joined: Mon Oct 05, 2015 2:01 pm
Posts: 1896
egolf39 wrote:
My owner's manual does say that if leaving car parked in -27C or below temperature can freeze battery and cannot start electric motor, but does not say anything about not able to charge the battery. I guess, it's rare to see -27C temperature here, I try to charge it during the day when it is warm.


Then you should be good. The battery does generate a little bit of heat itself as it recharges.

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 Post subject: Re: Charging battery in cold weather?
PostPosted: Sun Dec 31, 2017 5:30 pm 
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Joined: Sun Dec 31, 2017 5:08 pm
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I have not run into any problems will cold damaging the battery. Our egolf regularly sees minus zero temperatures. I was concerned last winter as the range was diminished in the cold weather. Once the temperatures warmed up our range returned to normal. We normally charge to 82 miles, today at -19F full charge was only 44.

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 Post subject: Re: Charging battery in cold weather?
PostPosted: Mon Jan 01, 2018 11:18 am 
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Joined: Fri May 26, 2017 1:50 pm
Posts: 62
I have not seen any issues yet charging this winter - flo charger in garage - car sits outside all day at work - range has dropped on display by 40-50 ks full charge shows 161 k range - but it is not driven that far B4 charging on weekend off peak - might go 90 kilometres for the week

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 Post subject: Re: Charging battery in cold weather?
PostPosted: Tue Jan 02, 2018 11:10 am 
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Joined: Sat Feb 21, 2015 12:19 pm
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The battery is heated during charging in the cold. So, it is not harming the battery. It uses a bit more electricity, is all.


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 Post subject: Re: Charging battery in cold weather?
PostPosted: Fri Jan 05, 2018 7:34 am 
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Joined: Thu Jan 04, 2018 3:45 pm
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I live in Toronto and have had my 2017 e-golf for 10 weeks. I have had no problem charging over night at -22c. The range, on the other hand, really goes down. My worst was 80km on a full charge (with heat on), but when it is below -15c I usually get 110km showing for a full charge.


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 Post subject: Re: Charging battery in cold weather?
PostPosted: Fri Jan 05, 2018 2:29 pm 
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Joined: Fri Jan 05, 2018 2:25 pm
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So what exactly makes the range drop so much? Is it simply batteries are less efficient in cold? Is it all heat based? What if the heat is off? I'm picking mine up in a few weeks and am concerned if I get less than 100km.


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 Post subject: Re: Charging battery in cold weather?
PostPosted: Fri Jan 05, 2018 3:49 pm 
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Joined: Tue Feb 23, 2016 5:50 am
Posts: 99
increased tire rolling resistance, denser air to push out of the way, stiffer lube in bearing, snow tires if your using them, defroster, seat heat, etc


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