And for those of you who live in Antarctica where jet fuel freezes, and will be commenting below shortly about how this video is incorrect, you need a heater pad ???? and a ton of insulation. I'm sure someone will disagree. Keep in mind that regardless of the temperature, if you can insulate it well enough, it should be able to handle anything. At least on this planet.

And yes, you still need low temp charging protection. That's why I prefaced this video with the dangers of charging without it. Solar batteries are charged unattended, so it is crucial to have full protection for your system at all times. Figured that was implied, but I just got an ignorant comment about that.