Study the last couple years of Engineer775 vid's.
Focus on both the PV direct and the Battery powered stuff:



https://www.youtube.com/user/engineer775/videos

A primer for solar and an RV (slightly dated):

http://www.jackdanmayer.com/rv_electrical_and_solar.htm#Residential%20Refrigerators

Last edited by Bend; 08/01/21.