“Battery Total” as far as I can tell is the net state of the battery over a given time interval. I can’t really see the point to this, unless you were trying to ascertain potential roundtrip losses in the battery or if you are leaving some capacity in the battery in a given time period.
Here is my screenshot for yesterday.
As can be seen, batteries charged 19.1kWh and discharged 17.5kWh, which given the Battery Total function means there is a deficit here, but this is a not a true representation of the energy harvested or used (which would be more akin to the other collected and displayed data).
Is this more useful for people the export battery energy to the grid or is there something that I am missing. I personally feel like, Energy exported from the battery (where self consumed or to the grid) would be a far more useful number to have here. Maybe I am missing the point, so if anyone could help enlighten me, I would appreciate it.