Tesla Model 3 Owners Vent about Polar Vortex Affecting Cars

Your coolant isn't explosive. Batteries are, so it's a tad more than a molehill.

I am sorry but that doesnt make sense. A block heater attached to a battery casing wouldnt cause a battery to explode and it should be able to keep the casing warm just like an engine block. Heck for a few bucks you could put a thermal cutoff switch on it...
 
I am sorry but that doesnt make sense. A block heater attached to a battery casing wouldnt cause a battery to explode and it should be able to keep the casing warm just like an engine block. Heck for a few bucks you could put a thermal cutoff switch on it...

A block heater is a resistance-coil that you put in a receptacle on the vehicle, looks like the coffee cup heaters that used to be popular. You would not be able to attach it to the outside of the battery, nor would it have much effect. Heating a battery in general, however, can cause out-gassing. How do you propose to handle that on a pack as large as one in a Tesla?
 
A block heater is a resistance-coil that you put in a receptacle on the vehicle, looks like the coffee cup heaters that used to be popular. You would not be able to attach it to the outside of the battery, nor would it have much effect. Heating a battery in general, however, can cause out-gassing. How do you propose to handle that on a pack as large as one in a Tesla?

I know what a block heater is...my truck has one. How exactly do you think the built in battery heater works on the other models? Resistance heating the coolant that goes through the battery. Same thing a block heater could do.
 
I know what a block heater is...my truck has one. How exactly do you think the built in battery heater works on the other models? Resistance heating the coolant that goes through the battery. Same thing a block heater could do.

Presumably just by loading the battery as that would produce an even heat across all cells using its own chemistry. You can achieve the same thing on a starter battery by running the headlights for a few minutes first.
 
Presumably just by loading the battery as that would produce an even heat across all cells using its own chemistry. You can achieve the same thing on a starter battery by running the headlights for a few minutes first.

https://insideevs.com/tesla-model-s-recycles-waste-heat-to-warm-the-battery-bower/

Looks to me like when using it they use waste heat. Parked there would be no waste heat so all it would have to do is heat up the coolant (maybe use the cabin heater to do so). Either way you can heat up the coolant using an external heater.
 
A block heater is a resistance-coil that you put in a receptacle on the vehicle, looks like the coffee cup heaters that used to be popular. You would not be able to attach it to the outside of the battery, nor would it have much effect. Heating a battery in general, however, can cause out-gassing. How do you propose to handle that on a pack as large as one in a Tesla?

You aren't familiar with a battery blanket? It's like an electric heating pad or electric blanket for your battery. Very popular in Canada in extreme cold. You plug it it along with a block heater and your ICE is guaranteed to start every single time.
 
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