Guys, I cant thank you enough for all this. Before I started this project, I didn't completely understand the Casita
how all the wiring works, etc. I was making upgrades without understanding the whole picture. Now, I believe I've got it!! I even understand how John a month back told me to use a STDP switch to go from converter to battery. (switching which one was going to power the DC panel). Now that I've dug in, took stuff apart, followed wires, and read what you guys said, it all makes sense!! The light
bulb turned on!!
1) The 110 AC powers the 110 AC stuff
2) The 110 AC powers the converter
3) The converter converts 110v power and sends 12v to 12v panel
4) The battery also powers the 12v panel
5) The converter charges the battery
Its that simple! So with an AGM, I need to eliminate #5. I can use a simple adapter that John is talking about instead of #3. I also just eliminated of #2. I believe this is the simplest of all setups - what John has.
All that said, I now realize my charger could be better. A 7002 would have been better than my 4.3mus due to having more uumph, and its ability to use DC while charging. A simple converter like Johns can replace my converter.
What will I do now? Now that I understand how everything ties into each other, I will redo a "master plan" and ditch my big converter, rewire/switch in a simple converter and use a better charger, etc. This will take more planning, time, and $, so its going in the "to do in the future list". For now, I'm going to get the capacitors soldered on my converter and go camping!!!
Thanks again guys!!!