Allow Battery Notes for entities

[Kilowatt-W]

Checklist

• [X] I have filled out the template to the best of my ability.
• [X] This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
• [X] This issue is not a duplicate feature request of previous feature requests.

Is your feature request related to a problem? Please describe.

It looks like some devices (integration from HomeMatic CCU) like battery driven climate controlls, are linked as entities not as devices so I am not able to add the Battery Information ?

Describe the solution you'd like

It would be nice to allow adding of entities in the manual integration/Battery/Add menu, so I could track those too :-)

Describe alternatives you've considered

I think it is not possible to convert a entity to a device, so I have no other solution :-(

Additional context

Thanx for your wonderful work, keep going on,

Gretings from Austria Kilowatt

[Kilowatt-W]

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