90% went from 504km to 485km overnight

[Mariano]

Hi everyone,

I charged my car to 90% and it only got to 484km instead of the usual 504km. That’s 20km less than normal.

The temperature outside is 5C, and I put on my snow tires two weeks ago.

My car is a 2021.

Thoughts?

Mariano

 

[alangrig]

Well, you can’t test in that way. It’s incorrect. You can only test EPA range by driving the car from fully charge state down to 1-2%. Otherwise, the car should be connected to the toolbox.

 

[one2many]

You should feel good, mine is 440km, still enough.

 

[Mariano]

I’m curious as to why my car is estimating my range differently than the day before.

Mariano

 

[one2many]

Its not exact measuring electrons, some escape detection.
If you fill a one liter bottle with water, how would you know
its exactly one, maybe a little less, maybe a little more.
Its not called a (GOM) guess-o-meter for nothing.

 

[Candleflame]

I’m curious as to why my car is estimating my range differently than the day before.

Mariano

This is how the BMS displays battery range. The car needs to take enough voltage readings to do a recalibration so its normal to happen in large chunks ( i just went from 445km to 429 km btw yesterday). If you lose 1 or 2km/day thats not actually real.

 

[Mariano]

Lol

Great name

 

[KenC]

I’m curious as to why my car is estimating my range differently than the day before.

Mariano

Could be your battery is cold-soaked. That is, the battery is slightly frozen. When it warms up, the range is restored. Hard to decipher without actually seeing some of the displays on your car.

Here's an old example, when my car was in its first year. Range was approx. 310miles. On cold days, it could show 300miles, and on really cold days, it would show a blue snowflake and show around 280miles. Totally temporary.

Is this the case with your car? Impossible to say without actually seeing some of your displays. Generally, a 10 to 15mile range drop didn't show the blue snowflake, but a big drop would.

 

[Farmergrl2]

Hi everyone,

I charged my car to 90% and it only got to 484km instead of the usual 504km. That’s 20km less than normal.

The temperature outside is 5C, and I put on my snow tires two weeks ago.

My car is a 2021.

Thoughts?

Mariano

Living in Canada I can tell you it depends on the temperature outside.
The colder it gets, the more charge it takes. If you are used to charging a set amount of time you will get lower numbers.