Hi, i am trying to figure out how my existing wiring is done on my Galeon from the boatyard and best way to add Multiplus Inverter/Charger and upgrade the housebank to Lifepo4 from AGM batteries.
Boat is "currently" equipped with the following:
2 x Volvo D6-400 with stock alternators
Automatic transfer-switch between shore and generator
1 x Argofet 3 way
2 x Argodiode 3 way
12v/100amp Centaur charger to charge engine, house and thruster bank
Bluesmart charger to charge generator battery bank
4 battery banks
- 1 x Battery for engine start
- 1 x Battery for generator
- 3 x Batteries housebank/Stern Thruster / stern anchor winch (180ah+60ah+60ah)
- 2 x Batteries for Bow Thruster / bow anchor winch
What is not clear for me is how/why they have used 2 x Argodiode and 1 x Argofet, why not three Argofet isolators to get less voltage drop?
As far as i know the Volvo alternators is temperature controlled, so they should handle the increased battery charge capacity that Lifepo4 batteries will demand.
My plan is to replace the house bank with 2 x Lifepo4 200ah or 4 x 100ah and add a 12/3000/120-50 Multiplus charger/inverter to get more creature comfort while not connected to shore power and minimize generator running time.
Since the 12v stern thruster can draw 1000amps i will reuse the existing housebank as thruster/winch bank to not hit the BMS discharge limits.
I will use the old Centaur 12v/100 charger for the existing four battery banks, new Multiplus will be the charger the new Lifepo4 housebank,
I have a unused output on the ArgoFET isolator, i am planning to use that to charge the new Lifepo4 housebank while engine is running.
add a BMV-712 to monitor the new housebank
by the way, everything is 12/230volt on the boat.
Any thoughts, feedback, god or bad is much welcome!