Today when I got into the car I saw a warning text that says something like "battery heater will consume energy and shorten the range".
I saw in the app that the heater is on but it stopped immediately when I started the car.
The car was stationary for a few days and the temperature was -7c but it was colder during the night.
I started heating via the app as usual and estimate that it consumed around 4% in 7-10 minutes of heating. The car was not connected to the charger and the SOC was 48% and dropped to 44%.
Battery heat indicator showed near blue field after heating.
This is the first time I saw signs that the heater is there.