New batteries installed! Got maintenance free batteries at Autozone for less than regular batteries elsewhere. Here's the link. Nevermind the photos in this link. There's no caps on this one.
https://www.autozone.com/miscellaneo...ery/107676_0_0
Alas, I still have a power problem. 12.6V at the batteries, but RV wont run on battery power alone. I will start a new thread.