SolarEdge - Energy Module

How can I add my battery to the energy module with the official SE web integration?

I obviously need current battery input and current battery output to configure the energy module. But I cannot select any appropriate entity. The only related entity I can see is “storage power” which is I assume is positive on battery output and negative on battery input. But I cannot select this. And probably would need two separate entities anyways, right?

Can I do this with template sensors and/or utility meter? If yes, could anyone share some config? I am totally new to this.