Depending on your RV (What converter you have now) I would most likely disable the existing converter by cutting the 120 volt lead to it (or disconnecting it) and use the charger built into the Inverter.. GENERALLY the converter built into the inverter is, at the worst, equal to the one you have now and often better.
But to be sure I"d need make, models and time to research
I would keep the existing converter in place, won't hurt it or anything else for it to be there and heaven forbid the inverter fail.. BACKUPs are good.
(Been there, done that,,, actually I have a progressive Dynamics Intella power with charge wizard (9180 in my case) which .. Well, recall I said at the worst the inverter's would be as good,, In this case, I would rank the prosine equal but I like the Wizard better for reasons I can not defend. So I choose it.
I will say I have yet to find a better one,, Or a better one than what is in my Prosine,, ((Though I suspect the Prosine may have a slight malfunction,,Works great as a back up unit though)).
