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 live in Massachusetts where the mean low in January is 5F, and I’ve seen -10 and below. I’ve never seen someone bring car batteries inside. I haven’t even seen engine block heaters since the 1990s, but people with diesel cars used to use them in the winter.