Temperature of 5F at Hagerstown SC. Spent the night last night a mile or two away and have to head west this morning, so thought I'd top off from 200 miles and warm the battery pack beforehand. after plug in the readouts say we're charging, there are volts. But 0 mi/hr and 0/1 A. Changed pedestals. Same thing. Is is there a time that the pack has to warm up before accepting a charge? Other thoughts? i have enough to get to Somerset PA. Should I have just gotten in and driven?