

While you’re searching for batteries (or any other potentially smart appliance), check if they are supported by just searching for “device home assistant”
Those that have official support will have a page on home-assistant.io and scrolling the description will tell you if it’s controlled locally (preferred) or via cloud polling/API (less preferred)
Some devices may have custom integrations you can setup from Github via HACS, where the quality and support can vary more significantly than official integrations.



































And yet, still recommended on PrivacyGuides