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Parking the Model 3 in the cold

I am preparing for winter and I will not have access to a garage. I have heard the model 3 does not have a battery pack heater but uses its AC Motors as a heater for the battery. What do you guys expect the battery loss would be for parking the car out in the cold, lets say one of the worst case scenario, in -30C to -35C for up to 12 hours? Will there be permanent damage to the battery?
 

kbeckley

Member
Supporting Member
Feb 2, 2010
229
1,985
Toronto(ish)
I am preparing for winter and I will not have access to a garage. I have heard the model 3 does not have a battery pack heater but uses its AC Motors as a heater for the battery. What do you guys expect the battery loss would be for parking the car out in the cold, lets say one of the worst case scenario, in -30C to -35C for up to 12 hours? Will there be permanent damage to the battery?

Well Tesla got clever. From what I understand they got rid of the separate heater and use the heat from the drive train. The key is they can do this even when the car is standing still. So yes in effect you have a pack heater just not a dedicated pack heater. Think of it as them running current trough the inverter but not to the motor. The invert gets hot and they transfer that heat to the pack. The motor turns not a single degree. Pretty smart. Fewer components. To you it will look like an S or X in the winter.
 

ewoodrick

Well-Known Member
Apr 13, 2018
5,285
4,292
Buford, GA
I am preparing for winter and I will not have access to a garage. I have heard the model 3 does not have a battery pack heater but uses its AC Motors as a heater for the battery. What do you guys expect the battery loss would be for parking the car out in the cold, lets say one of the worst case scenario, in -30C to -35C for up to 12 hours? Will there be permanent damage to the battery?

I'd hope that you had it plugged in during that period. Which, in this case would be common, because most ICE vehicles would also have their vehicles plugged in. Nothing likes to move at -35c
 
I'd hope that you had it plugged in during that period. Which, in this case would be common, because most ICE vehicles would also have their vehicles plugged in. Nothing likes to move at -35c

So, I park in a parkade that specially has signage saying "plugs to be used for block heaters only" or something along those lines. Has anyone plugged into such places with their Tesla? In -35c all the energy would be going to heating the battery and not charging, but I assume places are not so kind to this.
 

Vawlkus

Active Member
Feb 28, 2017
1,953
1,119
Halifax
So, I park in a parkade that specially has signage saying "plugs to be used for block heaters only" or something along those lines. Has anyone plugged into such places with their Tesla? In -35c all the energy would be going to heating the battery and not charging, but I assume places are not so kind to this.
Well, you ARE heating your BLOCK of batteries, so you should be fine. ;)
Seriously, I’d ask about this. IMHO it should be fine.
 
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I am preparing for winter and I will not have access to a garage. I have heard the model 3 does not have a battery pack heater but uses its AC Motors as a heater for the battery. What do you guys expect the battery loss would be for parking the car out in the cold, lets say one of the worst case scenario, in -30C to -35C for up to 12 hours? Will there be permanent damage to the battery?
My S sits outside at work all winter, so 8-10 hours, often at -30. You’ll lose a couple percent sitting outside, and the driving with no regen sucks until the battery is warm, and you’ll use 50% more energy than you will in the summer. Cold is good for battery life (better than heat), so just charge nightly and it’s really no big deal. Far better than leaving an ICE in those conditions - you just get in and go, no waiting for it to warm up or praying that it starts. Instant heat and if you need to pre-heat for a few minutes before leaving, it’s easy with the app. Even turn your seat heaters on in advance. As long as you have access to something better than a 15A 110 outlet, you’ll be fine. 15A will keep the pack warm but not add much range at the same time at -35; I know, I’ve done it lots over the past 3 winters.
 

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