Solana

What Talia indicated his 3rd point is perhaps the difficult one to ensure comms between BMSes work. 

If 2 inverters working independently, you can have different models of inverters & batteries, no problem ...
If you plan to use the 2 inverters in //, you need the exact same model & firmware on both.
Then all batteries should be controlled / connected to the master inverter. For this, 2 options :
- use batteries with the same voltage / cells count & same brand of BMS (typically Seplos or Pace. Meritsun uses one of them) for the batteries to be able to communicate with the inverter & between each others.
- use batteries with the same voltage / cells count but different brands of BMS with no com between inverter & batteries but using voltage settings. No problem whatsoever as long as you know what you are doing about the voltage settings.