One automation for each battery was getting crazy. A temperature sensor in most rooms, motion detectors and a handful of door/window sensors. This blueprint creates an automation that manages all batteries dynamically. Really is amazing.
What blueprints do find useful?
https://community.home-assistant.io/t/low-battery-notifications-actions/653754
I wrote some flows and functions in Node Red to send me a daily email with a list of all devices < 10% battery, but what I’m noticing is that several of my battery devices aren’t properly updating their status. I need to update it to also email me on unavailable battery devices too I guess.
I’m not quite sure how reliable these battery indicators are. I have a thirdreality moisture sensor at 0% for a week now. Still the original battery too, so you’d think that was actually properly calibrated. 😆
So I just go with the unavailable and deal with it then. Though the notification automation that I made for that did break at some point. I need to figure that one out again.
This automation also handles unavailable.