I have just completed a reference site for my Solar System using SolarAssistant a Growatt SPH5000 inverter, Growatt GBL6532 6.5kWh Battery, iBoost and EPS connections. It may be of use to anyone with a similar system setup or is thinking of adding to an existing installation.
http://www.brettoliver.org.uk/Solar_Power/Solar_Power.htm