RE: 12v Fridges and batteries
I've been running a Norcold for over two years now.  With 100AH battery.
Assuming the aux battery is topped off when I park I can go two days easy,
three to four days getting down to about 11V.  All last week I was parked
with the solar panels out under good Sun and even though one of the panels
decided to quit working right the second day I stayed above 12V all week
running the 'fridge all the time (38 to 40 degrees) and the laptop an hour
to two hours a day.