Comment by JKCalhoun

Do EV's keep their batteries warm electrically? I know some RV LiPo batteries have integrated heaters to keep the batteries from going below freezing. I suspect that's an acceptable tradeoff in cold climates. Ideally you would keep the battery warm while charging since it's more or less free power when tethered, and thermally insulate the battery enclosure to try to retain that heat as long as possible.