solar power for dry camping & cpap machine

I am planning to have one battery for the controller, inverter... and another battery for the stock connection to the trailer. That way I would not have to turn off the converter to use the inverter. Where did you put your inverter? I am having a hard time finding a spot for mine.

This a poor design as you will get more power from multiple batteries connected. One single battery for inverter power is also a poor choice, mainly for the reasons in my post above.

You either need to do more home work or hire someone knowledgeable. Their is nothing tremendously hard about turning off a converter or other AC draws in an RV.