What happens to a Tesla at minus 40 degrees?

Will the batteries get broken? In any case, normal notebook or smartphone batteries will not be cold.

You have a cotton sleeve for insulation, nothing happens.

It costs you range because lithium batteries give off less energy in the cold as the chemical conversion runs much slower.

To avoid damage to the battery, the battery pans are heated

So little cotton helps so great when the car is 24/7 outdoors.

Range does not cost, because the batteries heat up during operation.

How long does the heater run before the batteries are empty? And what happens to the batteries when you stop heating?

No, they do not break

the batteries are air-conditioned at all current teslas
i.e. If it is too warm, they will be cooled - if it is too cold, they will be warmed up

in practice, this looks like starting from a certain temperature, a battery heater, which protects the battery from damage
that works synonymous if you connect the cold battery to the load - in which case, the battery is first heated and then the charge started

You're a specialist in physics.

Did you already try that?

Also, nothing happens, because nothing works.

But, that costs reach, the heating power is indeed consumed - so you can in winter, the e-car like s.der outlet, so that the heating power can be obtained from there and the battery when going off has some temperature

the akkuheizung when driving runs only when the battery comes under a fixed charge, then it turns off

if the heater is broken, the battery suffers - it gives only little power because the electrolyte does not conduct well - then it gets colder (> -60 ° c), it simply breaks down

:-) that is a confusion - the thing that enters the box, is mostly clothed in cotton, so that the heat stays inside… (So in the essence) :-)