Virtual device for Home battery?

Have anyone successfully created a virtual device for a home battery that works with the Energy tab when using a hybrid inverter?

I use Edwin’s app (SolarEdge + Growatt TCP Modbus) for my Sigenergy system, where my inverter and battery are seen as a single device.

I’ve sucessfully created a VD for my Solars, but can’t get the battery to work with the Energy tab…

Any guidance would be greatly appreciated!

From what I’ve read the dev of Device Capabilies app has this feature request on his todo for the advanced virtual device;
Follow status here:

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I have build (several) virtual batteries to get more insight in what battery to choose.

You can read it here and also doenload the flows