Hi,
I wanted to use this, but only some sensors are listed.
How can I add additional Sensors from e.g. a HomeMatic integration?
I could find no description.
Thanks
Same question here 
It looks like the current implementation of this dashboard only supports batteries according to the code here: frontend/src/panels/maintenance/strategies/maintenance-view-strategy.ts at 85b2ca377ad228c0cec80bde7d011d9195650a8b · home-assistant/frontend · GitHub
The PR which added the feature said that there could be support for others in the future: https://github.com/home-assistant/frontend/pull/30372
I was personally looking to see if there was a way I could add all my air filter lifespan metrics for example. Perhaps I'll put up a PR and see if they take it.
Thank you very much for looking into this. Very much appreciated.