I was looking to upgrade the house bank and really interested in a set of Battleborns, I have one starting battery and the old original charger. I figure a great time to upgrade to a new Victron IP22 which has three outputs. I don't see getting a built in inverter as I use a plug in small wattage for the laptop or what not. Now I am gathering to round off the system I'll need a DC to DC charger too? Maybe someone has a diagram I can follow. More than likely I'd find a shop that has experience installing. :smileo