Hi,
My system is as following
12v side for navigation and most important basic needs:
2x windgenerator connected to starterbattery (they can only charge leadacid)
Dc dc buckbooster victron 50a
Dcdc buckbooster mastervolt
30a solar mppt
Smartshunt 300a
Lifepo4 1.2kw battery
2000w phoenix inverter compact
24v living battery side:
Multiplus 3000watt inverter and solar charger
Jk bms with 6kw eve 24v battery
500a smartshunt
I would love to use the surpluspower of the 12v side to charge the 24v side.
Was thinking to use a 12v dc dc buckbooster to use the surplus of the starterbattery (using the smart engine detect to detect the charge current going in from the windgenerators) to charge the 12v lifepo4 battery and then to program the 2000w inverter to only turn on when battery is already quite high 80% and plug this into the input side of the 24v multiplus.
(switch between shorepower and 12v inverter with a on-off-on “slow”switch)
I therefore always have a full starter
Next always have a full navigation battery
And then can use the surplus of wind and solar to also charge the 24v battery bank.
Not too concerned about efficiency. More about reliably redundancy.
Is this the best way?
Is there a way to match the charge current of the 24v multiplus charger to the current coming in from the surplus wind and solar? As too not let the system flip itself on and off too much.