It's been some time now that I'm trying to find a solution for my next van installation.
I first came with this diagram with 2 victron 12V LifePo4 (24v): https://community.victronenergy.com/questions/65042/wiring-diagram-for-a-van-install-with-multiplus-ii.html
Now I would like to use the Pylontech 48 V batteries and a Multiplus II 48V/3000 for efficiency, price, form factor, ...
I searched for a 48V buck/boost around 50/100Amps and found nothing affordable and easily available. I do not want to install a second 48V alternator... At least not at first, I have a strong 250A 12V alternator.
The basic schematic would be as follow:
- A "small" inverter under the hood would allow to feed the Multiplus at the rear of the van without needing big wires (and losses).
- The inverter would be activated with a D+ signal to avoid discharging the start battery
- The installation would be very simple
- I could easily "tune" the amps drawn from the inverter with the AC input current limiter of the Multiplus
Is it possible ? do you see any problems with this kind of setup ?
Basic diagram without solar, Cerbo GX etc etc etc.