Add battery plus sensor with binary sensors

[ParalaXEngineering]

Checklist

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

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

I have a code that generate my dashboard, and to display the battery level of a room, I take the minimum of all battery levels. Since I don’t have a sensor battery plus, the device with binary sensors as battery levels are not picked up.

Describe the solution you'd like

Hi, first thanks for the super add on :)

Create, for devices with a binary_sensors as battery levels sensor like the other one, that will have either a 100% level or a 10% level (or configurable equivalent integer level to convert the on/off state).

Describe alternatives you've considered

I can create templates, but then I don’t have the attributes that this plugin offers :(

Additional context

Nothing more than the fact I have automated my dashboard creation.

[andrew-codechimp]

This is something I've been asked for a few times, I'll add it here as an enhancement for the future.
Thinking it would probably work similar to the low template, you specify a template that returns a battery percentage and it will use that.
I'd not want to hard code it as 10% would never be right for some things, plus a template would also allow converting a voltage to a percentage.

[ParalaXEngineering]

That would be awesome indeed :)

I think a template would be nice, or simply ask for two values to the user when set it up.
In case of the template, maybe you can use the current template input form at setup, because in this case, the template for battery low has no meaning I think since the sensor itself already provides that. I hope I'm clear :)

[andrew-codechimp]

I would have to look into that more but it's a potential idea.
There's probably some reason I've not done it before but I will revisit it.
No guarantees on when, I think I have some changes being forced by a HA architecture change coming that will be the priority.