No. It’s very weird, but Homey has no “mark device as offline after x minutes of inactivity” setting or the like.
But,
because of the great community, there’s several ways to work around it:
There’s a great script which you can run every X hours, it shows you any inactive sensor devices.
Another way is to (re)start a timer every time a sensor value, like temperature, is changed. Setting the timer to 12 hours f.i., makes it possible to determine if a device was inactive during 12 hours straight.
To quickly determine if the inactiveness is battery or communication related:
For every device there’s a notes field available, for you to save the battery replacement date for instance.
Battery status is more a gimmick than a serious measurement. The usability depends on the device or app.
F.i. Aqara contact sensor battery levels stay at 100% all the time, but temperature sensor battery levels ate reported pretty realistic.
