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Hi, currently running an MPii with 4x Pylontech US2000s. Everything is great. I don't use the AC out, it's running as a grid tie ESS. Using solar too on the AC side.
What I want to do is add a second Multiplus with a different type of battery (thinking EVE LiFePo4 cells and Batrium BMS).
If this works then I can scale the system up over time with more MPs.
Is this feasible? or do both the multiplusses need to be connected to the same battery?
If they are being programmed as parallel then they share a battery bank.
There is some more documents and information linked in the related resources box on this page - to the right on laptop - to the bottom on mobile.
How does the existing MultiPlus know when it is OK to recharge the battery bank? Time of day? Do you have TOU electric rates?
I manually schedule charge time, also the battery charges from surplus solar.
So can you confirm that the proposed system is OK? Would they operate effectively as a master unit and 'see' two batteries?
It is a requirement for Victron - it is in the manual.
if there is a voktage difference - if there is an amp difference - they will perform differently and not load share.
There is if they they do not share the load equally one bank will deplete faster than the other - one unit will then shut down before the other and then you will see errors on the GX - for example error 3
