Will; I want to get the 48volt all in one system and have 18feet by 8.5 room on cargo trailer. I want to be able to run a/c such as a min split. I am think if I have a solar array of 1800 I would be good to go but can I used 2 batterys versus 4??????I'm really lost....I thought I wasn't when watching your videos but then the DC converter threw me for a loop. I'm just slow on the draw I guess. The other question is installing the system. Once installed where do all the wires go from within the camper conversion to what panel (or do I need a separate electrical box with one wire going into the solar?