Which is the better battery configiration

I typed the above before I read all the above. Some of the comments are above my knowledge level but I think what Valhalla says is what I am looking at. Why am I looking at this????Well, I have a residential fridge now that is on an inverter. No solar or genny in my fiver. So it does pretty good running my fridge on the way to Florida or so, but then on the way home, my inverter quits (and I think it is due to an overtaxed battery) for the trip home. I really think the one trip pretty much kills the battery. If I get this MH I am looking at, I do not think it has solar but it is ready for it (it is a 2019 unit). I could use the genny to power it (I guess) but I just want to make sure I do not kill my battery. I have gone through 3 -4 batteries in my fiver and then the slides do not want to work right....I am thinking the battery gets drained too fast and then I have to stop, let it reset and then moves the slides 5-10 seconds at a time.

So I am thinking I will get 4 volts for the MH when the time comes. With Lithiums, do I need to get a different charger or something for them. This is the stuff I have no clue on or how hard it is to add a different charger or whatever I need.