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Old 02-16-2021, 08:43 PM   #345
Manic!
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Quote:
Originally Posted by underscore View Post
What's the longest you can run just the heater? I imagine you could get fucked pretty easily if a highway shuts down in the winter.
Probably longer than a gas car.

https://teslamotorsclub.com/tmc/thre...d-idle.135350/

Quote:

I just parked my P100D model S for over a week at an airport outside. The temps were not extremely low but low. On average 5C for the entire time. I only lost 15KM of range over the entire week. I was very suprised. Parked at 350 came back had 335. Very impressive when considering the temp it was in.



Like others said it varies. Since I belong to the minority who have driven Model S a fair amount in -20 to -30 degrees I can tell you a few interesting things:

Seat heaters and radio take almost nothing.
Cabin heat takes a bunch. Cross country driving in minus 20 F with cabin heat on cut my range literally in half.
Pre heating cabin and battery while plugged is a huge advantage

To answer your question adout idle time based on my experience with Model S. Seat heaters and radio on you can probably "idle" for days and nights on end.
Cabin Heater on at 32 deg F. Maybe a day and one night.
Cabin Heater on at minus 30. Ten hours top
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