[bryanlarsen]

I don't imagine the difference is very significant on long drives. If the car is cold soaked at -30, it uses about 10kW for the first 3km. Then everything is warmed up, and the ~25% difference is increased consumption, not decreased battery capacity.

As long as you have a heat pump harvesting the waste heat to keep the battery up to temp.

But might be significant on short drives, 10kW for the first 3 km is massive.

[rayiner]

Yeah, this heat up effect is massive for around-town use. We have had below freezing weather for two weeks, which is very unusual here in Annapolis. That’s had a huge impact on my wife’s use case, which involves a bunch of 5-10 mile trips to drop the kids off at school, go on a grocery run, pick the kids up, take the kids to math tutoring, etc. She ran out of charge the other day during drop-off b/c the “37 miles left” we had the night before was actually a lot less than that accounting for warming the battery up the next day.

[bryanlarsen]

10kW is about 40 miles of range, as you figured out the hard way.

[bryanlarsen]

Arg, 10kWh, not 10kW.