i would like di connect my HA to an BLE-Battery in my Van. in the van is an Andorid-Phone whit the Companion-App and connect via Bluetooth to the Batterie.
I cant ind an tutorial, how to get the Battery-Data in the HA
It’s not likely to happen thru the companion app. That is more of a UI and sensor reporting phone status to the Home Assistant Server.
You would need another means to pass that data to HA.