[David70]

I don't understand the battery temperature/charging issue, if the battery needs to be at 14F, just put it in a box with minimal amount of heat tracing? I just plugged it in, a small part of the power could go to keeping the battery at optimum temperature and getting a box to 14F isn't very difficult even if it starts at -20F (raising it 34 degrees). A toaster oven can take a box from room temperature to 400 degrees in minutes (raising the temperature 330 degrees).