I have a mostly victron system and looking to replace an ancient RV converter-charger with something to match. Current system:
100ah LifePo4 12v.house bank A
(+2x 210ah FLA. Golf-cart 12v house bank B)
Victron BMV712 +shunt
Victron Smart 100-15 and 75-15 MPPTs
Victron Smart BLUE ip67 12-25a 120vAC charger.
I use an external plug-in honda eu2kw (1800w rated) inverter-generator most of the winter. I need to replace 50a/hour if possible BUT I would really like to take advantage of my 100a RV alternator when driving!
My old converter supplied DC when the old built-in Onan 4kw generator was running or the RV was plugged into shore 120vac and outputted 12v to the lights and fans (etc) and charged the old AGM with about 3-45a depending. I currently use the Honda for everything as there is almost no sunlight here in the winter.
I'd like to set up a simple 3-or-4 way switch via the positive battery cables (?) (I.e. "A-B-Off" or "A-Both-B-Off" as well as the gc2 FLA will be needed as a backup source until I can afford more LifePo4 to replace. The slight issue is 50a is a bit too much for my 210ah GC2 FLA's. Sorta need two different chargers, unless...?
I've considered a 2nd BLUE Ip67 12-25a and a switch to select bank for charging but that doesn't much solve the alternator while driving charging issue...
What do I want to look at to get 50a an hour into my LifePo4's using 120vac? 50a as that keeps the Honda in eco mode snd nice and quiet for the 1.5-2 hours recharging.