Monitoring the SoC of a storage battery

I’m about to have a Tesla Powerwall 2 installed (c/w Tesla Gateway 2), and would like to be able to display the State of Charge (anything between 13.5 - 0.5 kWh) on a Dashboard within . My feeds are hosted by , and I will be able to monitor power flow through an EmonTx & a CT.

Can this be done? I know there is a battery widget within the dashboard Toolbox but AIUI this is for monitoring emonTx batteries etc. Can I use this?


I too would like to know if this is possible but with Solax inverter and battery.