Can solar keep a lead acid battery from freezing.

I know that I just uploaded a video earlier, but I saw a question on another video. That question was can solar keep a sitting lead acid battery from freezing in the winter. Last week we hit -15 and this morning it was -6. They did not get a answer. So I decided to make this video for my viewers, and answer that question. I froze my butt off, and my fingers still hurt. It was cold in the camper. It's about 4 degrees right now. The solar panel was unhooked to the charger controller as you can see, and I use my Volt Ohm Meter to measure the voltage. I decided to make this a short video because my last one was so long. Everyone have a good day.