I am looking at posible upgrades. Currently in my 5th wheel I have a Samlex evo-4024. I bought it not understanding it can't be used with the existing 50a panel, so had to install a sub panel and move over the circuits it could handle. The other issue was not being able to use the common ground to the frame. I now see the prices on 48v batteries are at a price I can justify upgrading. I am looking at the Victron Quattro 5000VA 48V. I do not need the generator transfer switch, but at $2200 it still seems practical. Can anybody that has gone this rout give me any other recomendations.