Valeo alternator / Alpha Pro / Splitting

[ORAORA]

Hello, I am changing my old Volvo 22MD for Yanmar 4JH57 with Valeo 125A 12V sg10s078 alternator.
I ‘ve got a Mastervolt Alpha pro 2. I will isolate completely the Valeo excitation-circuit from the rest of the alternator then this prefectly isolated excitation field will be connected to the Alpha Pro.
I would like to make a spitting charging system for the starting batterie and the house bank. I'm not necessarily looking for an optimal charge. My House bank (3*300Ah Relion) are most often charged by my solar panels(3*340W) but i want a backup with the engine alternator.


Do you have any advice for me on this installation?

[CharlieJ]

Use a Blue Sea Systems ACR or Balmar Digital Duo Harte between the house and start banks.

[Maine Sail]

Originally Posted by CharlieJ

Use a Blue Sea Systems ACR or Balmar Digital Duo Harte between the house and start banks.

The Balmar Digital Duo Charger can be used as ignition excite, which works with LFP (would only work with engine running), but the ACR would rarely if ever un-combine as the opening voltage is 12.75V or lower for 30 seconds and the Relions will only be below that point when pretty deeply discharged.

Another alternative to the DDC is the Sterling Power BB1230 12V in to 12V out 30A battery to battery charger.

The Victron Orion Tr Smart 12V to 12V 30A DC to DC battery charger non-isolated is also an excellent option in a DC to DC charger..

[ORAORA]

I m think to go with the Mastervolt Charge Mate Pro 90