Cold weather charging / battery heating / loss of range (un-orignal THEORY INSIDE!) Normally, I would plug the car in at night reduced down to 20A for a nice, slow charge. That's fine, nice for the battery, gets me nice range due to better pack leveling. However, these past few days have been 10+ degrees below freezing and we get the "Battery is heating, performance is impacted blah blah blah..." So I had an idea: What if I bump the charging to the 40A max, but delay it to a few hours before we leave in the morning? That way, the battery is already warmed by the charging AND the battery is finished charging. Then, you have a pre-warmed / full range drive for the day! It's supposed to be cold in the morning, so I'm going to try this theory. I searched, but couldn't see if anyone else thought of this, yet. I'll post my results on whether this works or not.