Installing new batteries

[jdarwin]

Hello all. I am planning to replace my 2 grp 24 batteries with 2 six volt 235AH batteries. I'm currently in NM and plan to travel to TX to see my daughter and purchase the batteries.

Here's my question. If I pull the 12V batteries will the 12V system still run off the 110VAC converted to 12VDC? Are there other potential problems that might happen if left for a week without batteries?

I'm still learning about these RV systems. It seems to me the converter would operate the 12VDC part of the system. Thanks