http://www.teslamotorsclub.com/showthread.php/13633-NYT-article-Stalled-on-the-EV-Highway There are numerous threads including the NYT article today "Stalled on the EV Highway" that discuss battery loss due to the cold. There seems to be a general consensus on these threads that Tesla should be able to improve battery management to reduce the impact cold temperatures has on range loss. I was wondering how much of the underlying problem is the Panasonic battery itself vs better battery management? Roadster owners report the cold does not affect their range, nearly as much as the Model S. Why is that? Is the Roadster battery just better in cold temperatures or is something else, or very likely a combination? If the Roadster's improvement is related to battery management why wouldn't Tesla carry forward battery management to the Model S? What do the battery experts think?