All day ever day when I was working in an office and when it was -27F out, my son didn’t listen and when to his hotel without charging first. Even at close to zero, the car ran fine and he got to the charger. However, the battery was so cold soaked that it had to heat the battery for a long time before it could charge.

Actually heat is much harder on the battery than cold. Different manufacturers have their own battery management systems and they aren’t equal.