Cabin heating to 89F while charging.

[James Cole]

Hello guys,

Just got my first EV and noticed the cabin gets quite warm while charging, mind you this is the first time I have charged it and it was at 110V, took 48 hours and the cabin was always warm at 89 degrees sustained while charging, outside temp was at 70 all this was indoors.


Is this normal?

Thanks
JC

 

[vsansal]

Was your HVAC off? Also was it a lower temperature before you started charging and it went up to 89? Charging has nothing to do with cabin temperature unless you are using HVAC to distribute it internally. Was it warm where the car was? When you say indoors, is it your home garage?

 

[James Cole]

It was not an exterior factor at all and was not warm, it was an indoor garage and interior temp was maintained no matter the time of day or night.

HVAC was off.

 

[grmdl3]

What is your climate temperature set to?

Keep in mind if you have scheduled charge times, it will also fire up climate control at that time, even if the HVAC is off.

 

[vsansal]

It was not an exterior factor at all and was not warm, it was an indoor garage and interior temp was maintained no matter the time of day or night.

HVAC was off.

And what was the temperature internally before you started charging?

 

[user212_nr]

The car does not get hot while charging. For the car to have caused such heat it would have to be on fire.

One possibility is that the surfaces and mass of the car were heated outdoors, which then heated the air inside of the car after you left. This would not be unique to Tesla though, if it is possible. Its a relatively small volume of air inside the car.

I know someone who left his house without heat for three days in the winter, and we had a few warm days (60 degrees). He got home and the house was at 75-80 degrees.

Not everyone knows that there are two basic types of heating (convection and radiation), and that the temperature of the air is also different from the temperatures of the objects inside of it. In some rare situations the heat radiation will overpower the convection.

 

[Rocky_H]

Some warmness in the mid 80's wouldn't surprise me at all if this were higher power charging. I think the onboard chargers are under the back seat of the Model 3, like they are in the Model S, so where that box is doing some high power conversion, it generates some heat inside the car, which comes up through the seats. But that would be more like if you're doing the higher power charging on 240V at 30-48 amps. Using the low power 120V charging shouldn't be generating much heat I wouldn't think.