Hi,
I'm in the process of fitting electric affairs to VW Crafter and chose victron products. So far I fitted smart solar mppt 100/50 controller, 630W solar array, 360ah 12v lifepo4 battery bank, Orion isolated 12/30 charger, BMV712 monitor and Multiplus 12/2000/80A inverter /charger.
Now looking for solution of maintaining starter battery whilst car is not used and multiplus inverter won't be running. I don't see any easy setup which would offer multi-stage charging /maintaining except BLUE SMART IP65 CHARGER 12/5 plugged into inverter which requires running inverter 24/7/365
I understand that multiplus inverter /charger doesn't offer reasonable solution.
Just wondering about the interference of following setup :
Currently running intermittently Orion isolated DCDC 30A charger when solar is not producing enough. How about using Orion DCDC converter the other way from house batteries to starter? I have the feeling it's possible only once DCDC charger is off, maybe double latch relay connecting / disconnecting both systems respectively from ignition feed /running engine feed?
Still would rather use car charger 5A with 7 stage then converter (size, weight, price difference).
Also how is the multiplus gonna be happy with only charger drawing measly nothing when run virtually without load for months?
Thank you
Jiri