In these conditions, sometimes the temps fall even lower, and people will take their ICE batteries inside to prevent it dying. Can’t do that with an EV, and can’t leave it charged for two weeks. The EV I have in mind can run its own heater periodically to prevent damage. Could I count on it doing that for the entire vacation?
I grew up in Minnesota and NEVER saw someone take out their battery in the winter. They might have a oil pan heater plugged in, but for the battery, nope.
Remember, cars on dealership lots will be sitting there all winter, only moved to be washed. You’ll be fine.
In Jan of 2014 we had a cold snap. Me as a broke ass college kid with a 20+ year old car and a battery that was on its last leg, I took my battery out every night for 2 weeks. Each morning I’d wake up, turn on a hair dryer that I left dangling under my hood, get ready for the day, and then put my battery in right before I left. Obviously though, that was a weird situation and not the norm.