[HoosierDaddy]

I am also doing a 48V Growatt conversion. I was planning to do what Jack and others have suggested and charge the 12v house from the 48v via a Victron solar converter. As I disassembled the old system it occurred to me that I could use my now useless Freedom 458 invertor/charger to charge the 12V 8d AGM house batts only which also starts the generator. It is already in place and hard wired to the 240 V breaker box via a 30 amp breaker. I believe that would also allow for continued availability of the battery merge if the engine batts got low.