Wow, turns out my old dead battery was worse than I thought. I had
assumed it was at least a deep cycle / starting type of battery, but it
only says starting on it. I am guessing the battery was just totally
unsuitable for RV use and that is mainly why it died in 1 year. Here is
the exact battery:
http://www.easternmarineoutlet.com/D...rting-Battery/
I took out my multimeter, and the converter is putting out 13.63v,
13.58 with the dead battery hooked up. I turned stuff on in the RV to
see if it went up to the advertized 14.4v bulk mode, but it stayed
around 13.6. I was unable to measure amps, as my cheap multimeter says
200 mA max.
The area for my battery box in the A frame in front of my trailer is about 23 x 8". I might just barely fit 2 x size 24 batteries, if I could find a battery box the exact size. I am leaning towards just trading in my new Die Hard size 27 105AH, for size 29, 115 AH, which is the best I can find locally so far. (without upgrading to AGM batteries)