Another follow up+. This winter (and we had a long winter) I had the solar panel plugged into my old pickup and it sat on the dash. I didn't touch this truck from October to June and the battery was fully charged. I then took it with us camping. We had great weather and I left it on top of the front bunk end from Monday afternoon to Saturday morning. One battery lasted the entire 6 days. And that was using the water pump, cassette toilet, some lights and the roof vent fan some times and two bunk end fans running most nights. The fridge ran on propane along with the water heater for all 6 days. Yes the battery was new last year but it was a cheap fleet farm battery. Say what you will but I have never been able to run that many days of camping on one battery before.
Wildcat