electricity used to keep battery warm - Chevrolet Volt Forums: Chevy Volt Forum
 
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post #1 of 4 (permalink) Old 08-15-2014, 09:45 PM Thread Starter
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electricity used to keep battery warm

Just bought my Volt. I now learn that I must keep the car continuously charging below 68 degrees F, or it will start to lose charge while it warms itself to keep itself at 80 F.

Any ideas or data indicating how much more electricity (in kWh) I will be using just to keep the battery warm? I am in the New York City area and my car lives in an open carport, not a heated garage.

I am concerned that such a "vampire" load will add significantly to the total kWh consumed by the car, thus reducing the value of owning it.
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post #2 of 4 (permalink) Old 08-18-2014, 07:30 PM
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Originally Posted by energywiz View Post
Just bought my Volt. I now learn that I must keep the car continuously charging below 68 degrees F, or it will start to lose charge while it warms itself to keep itself at 80 F.

Any ideas or data indicating how much more electricity (in kWh) I will be using just to keep the battery warm? I am in the New York City area and my car lives in an open carport, not a heated garage.

I am concerned that such a "vampire" load will add significantly to the total kWh consumed by the car, thus reducing the value of owning it.
I leave mine plugged in all the time. I pay about $0.11 per kWh. The average cost of the electricity to charge my car runs between $21 & $24 per month year round. I can't tell any difference between Summer & Winter.
BTW, when it is not plugged in, the temperature window for the battery is much wider. I think it is something like 40 to 90 degrees, it will not cool or heat between those temps.

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post #3 of 4 (permalink) Old 08-18-2014, 09:05 PM Thread Starter
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Thank you, TSquare. I am attaching a Modlet power monitor to my 120v charger to create a minut-by-mimute load profile of power use at various temperatures. I'll let you know what it finds.

Best wishes,

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post #4 of 4 (permalink) Old 08-19-2014, 05:19 AM
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Be careful. Make sure that this device is rated to carry 15 amps continuously. Some owners have tried to use a Kill A Watt device, and even though it is rated for 15 amps, it could not do it for 10 hours without starting to melt the plug.

Also, if you are looking for an active forum, check out gm-volt dot com. And consider signing up at Voltstats dot net, it is free.

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