So I have the EG4 18Kpv with SimpliPHI 3.8 52.1v lithium batteries that have a BMS, but no comms.  Is there any product that can be integrated with this inverter for comms that would show SoC, such as the Victron BMV-712 battery monitor/shunt?  I has bluetooth but also a communications cable.  Would this plug into the EG4 18Kpv so that I could have SoC?  On the other hand, is SoC that necessary since I have the EG4 set up on voltage rather than SoC?  I have a SimpliPHI chart showing voltage and SoC.