Aqara says low on battery!

My Aqara units report “Unit is low on battery”. After a while it reports “Unit’s battery is now OK”. The unit works ok.

Apparently they report a drop below 20%, which activates the “Energy” section of the timeline.
To get rid of it, edit the homescreen, edit the timeline “widget”, and disable the “Energy” toggle

As an alternative to the above (which switches off the notification for all devices) you may want to check if replacing the battery stops the behavior.