Model S in Extreme Climates

Model S in Extreme Climates

Hello All,

I am a Model S Reservation holder and look forward to the start of production and arrival.

I am curious about thoughts regarding energy consumption in keeping the batteries cooled in high temp regions such as Arizona where I live.
In Phoenix, the temps can average near 100F over a 24 hour period with highs in 110's and lows in 90's.

My garage is usually around 100F at 7am when I get in my car!

Will the car require any extra juice daily to just keep cool??

Thanks for any thoughts!!


Jason S | 26 février 2012

In the garage it'll be plugged in anyway so the juice to cool the batteries won't be a drain on them (it is less than a 110 plug provides). You might want to use a 240 plug or dedicated charger if you drive 150+ miles per day in that kind of heat.

On the other hand you should be able to tell your car to cool its interior down before you enter it. And that'll be wonderful.

Timo | 26 février 2012

There is a warning for Roadster about not leaving your car unplugged for 24h in that kind of temperatures. Apparently excess heat can damage the batteries faster than cold does.

Not sure how Model S battery behaves, it is clearly a lot more sophisticated than (early) Roadster battery systems are as you can see from blog about bricking a battery. It might also be more tolerable to high temperatures than Roadster battery is, and it might be better insulated against ambient temperature changes.

I don't think it needs a lot of power to keep batteries in tolerable temperatures. As Jason says ordinary 110V plug should be more than enough to do that.

Sudre_ | 26 février 2012

The temperature is actually 120 degrees and that is the actual temperature, heat index is not irrelevant I think. I don't think there are too many places that have 120 degree days for 24 hours. If it hits 120 degrees in a few areas it will be maybe 6 to 8 hours.

Sudre_ | 26 février 2012

I meant to say...
...heat index is irrelevant...

Vawlkus | 27 février 2012

Roadsters were air cooled, the S has a liquid temperature control system that's designed to regulate both hot and cold climates.

Robert.Boston | 27 février 2012

But to the OP's question, yes, the car will draw more electricity as a result of the cooling load. Keeping it plugged in will ensure that this draw is coming from the grid, rather than the battery.

Timo | 27 février 2012

@Vawlkus, Roadster motor and PEM are air-cooled, but battery is liquid-cooled. For Model S (and beyond) all of those are liquid-cooled.