I do consider the solar as a battery charger, but I have other battery chargers so that is not the whole story.
We tried doing what we do now by just doing endless 50-90s and using chargers powered by the gen. Ran into "progressive capacity loss" from only getting to 90%. In ten days we had to get shore power to recover the batts.
Turns out that solar, by getting you to a higher SOC most days, lets you camp forever :)
I would not have solar at all if the gen/ charger routine doing 50-90s worked for longer, since that did get us enough AH replaced ok for what we used. The whole problem was the stupid batteries kept losing capacity.
Somewhere in there what we do for loads (microwave, toaster, kettle, TV, furnace, etc) is also covered by solar to some degree keeping the lowest SOC we get to from being lower. This reduces the amount of battery charging needed, allowing the highest SOC to be higher.
Hard to pin it all down, but you have to start somewhere. Adjust with experience, max flex, etc. :)
