so - round robin - sorta working! I created an app that lets me select all battery capable devices - I push the list of devices out to Google Sheets (using JsonImport). I have a mobile app that runs against the google sheets. If I update the data using the app on my phone, the updates appear back in HE!
I take a virtual tile from the data and using Hubitat Dashboard for Android I get:
Will take a bunch more work to clean this up - but thanks @LibraSun !! couldn't have done it without you!