The battery level for all the Mobile App integration’s devices is not available as a displayable entity in the Statistics Graph. I have previously opened a Github issue that never got an answer.
I installed a 3rd party graph card but it shouldn’t be this hard to do. I’m really hoping this gets fixed in this WTH month!
From other side, a battery_level info FOR ME has no value in a long-term period.
This info could be useful for devices like “temperature sensor”, “smoke detector” - but for mobile devices it is useless since it depends on a particular owner’s activities (and less on a battery’s degradation).
Means - if battery_level sensors for MobileApp become “LTS-able” - personally me (and probably some other users) will have to set “state_class: none” for them manually.