I think the plan for batteries in the ontology is that they would not be Points but sub-Equipment of an existing Equipment.
That way if you have both a “low battery” point and a “battery level” you have them in the battery equipment.
Something like:
Sensor (Equipment_Sensor)
|- Temperature (Point_Measurement, Property_Temperature)
|- ... whatever the sensor measures
\- Battery (Equipment_Battery)
|- Battery Level (Point_Status)
\- Battery Low (Point_LowBattery)
I remember complaining at the time that it was too complex, but the thing is that if you only have one Point, the battery level, you can directly link the Equipment to the battery channel of your sensor. An equipment doesn’t have to be a group item.
Sensor (Equipment_Sensor)
|- Temperature (Point_Measurement, Property_Temperature)
|- ... whatever the sensor measures
\- Battery Level (Equipment_Battery)
To change a type of semantic class (from Point to Equipment), you have to select None first to get rid of the filter, then you can select Battery under Equipment.
Then you will have a Batteries card in the Equipment tab (not the Property tab).