Cold batteries means bad-performing batteries, just like with an ICE car battery struggling to start the car on a cold morning.
Something like a Nissan Leaf would be bad in the cold because it doesn’t have much in the way of battery temperature management, although I think heating was added as an option recently. Tesla and Cadillac, and surely others, have full battery temperature management. They can also start heating your plugged-in battery long before it’s time to leave in the morning so you leave with a warm battery and a full charge. You will use a little more energy keeping them warm on the trip.
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