Put the Solar to the test.

So just a bit of back ground. I tried to dig up my original post for a reference but failed to find it. So the long and the short of it is: I bought a 20fq Creek Side and had 300w of solar installed controlled by a Samlex Controller. It feeds to 6v interstate batteries in series. I was able to go to the the Mojave Desert where it was less than 30 degrees at night, run the forced air furnace to keep the trailer @ 60 degrees each night for a week and the lowest voltage I woke up to was 11v(kept it at 65deg. that night). Most mornings I woke up to 12v or better. Then the solar would charge it up during the day and I would go to bed with 12.6v. Went on and on like that for a week. I consider this a win as we can keep the trailer warm enough for out tastes and there is no generator running to charge things up.