My dealer let my battery die three times while in for service. Each time they had to use a booster to run landing gear to hook up when I picked it up. Then when I was having trouble with the GFI in the inverter the dealer told me it should have come with two batteries because of the residential refrigerator. Oh course he was the one that put in one marine battery. I could not make it through the night if I did a boondock overnight while traveling.
So last summer I replace it with a 200ah true deep cycle AGM battery that is the size of two normal batteries. I eliminated the vented battery box because it is AGM and wouldn't fit anyway and now I have more compartment room than I did before and can easily go the night and not lose the inverter.
ps: as you can see I also added a true disconnect on the negative cable.