@MeerkatQueen I had a similar experience, not as bad as you describe with my TD25.  I had its range and person detection maxed out and yes would get occasional false detections, typically due to shadows and/or foliage.   But a couple of weeks ago, it just went crazy generating maybe 20 notifications in a hour.  Then again a little bit later.  Looking at the recordings, there was nothing even moving in many cases.   I dialed the range and person detection down significantly and is much improved.  Why all of a sudden it seemed to get so much more sensitive but less accurate is a mystery, although I had recently switched it from battery to wired 24/7.  I assume the algorithms are the same in either mode.

Before all this I had maybe 10-20 detections a day... I lowered all the settings, wake up sensitivity is on 2 (was on 10 before!) and I still have over 600 detections after half a day, while no one was even close to my house today... And there is not even one recording, because it's all filtered out by AI, so even AI knows there is literary nothing to react to.

EDIT: Just found out that the camera stopped even actually detecting people - I just tested by going out and back home and no reaction, there is more and more fake detection but was not able to recognise person in scanned arena.

  @MeerkatQueen You say "filtered by AI", could you elaborate on that?  I thought AI was used to generate the detections/notification.  You are getting detections, not notification or recordings? Generally I have a one to one recording for notification.  Where do you see the number of detections?  My understanding is that detections (wake up) are based on PIR, which is heat and motion not necessarily anything to do with persons.   Now that you have the sensitivity so low, that might be why it is not detecting a person?  Forget for the moment, the number of "detections", were the notifications/recordings still reasonably accurate?    What is the concern, that is uses battery to quickly?  How quickly?

  @CH_MN I will clarify myself now, tired to upload picture before for better explanation of the issue, but for some reason it doesn't work from Tapo mobile app.

These stats are from before I reset the whole doorbell (it's really silly that it also deletes all the data, but ok...) - you can notice that before i had maybe up to 20 detections (recorded and not) with sometimes half of them being actual recordings. It was all reasonable, until suddenly, with no explanation - I have this burst you can see (and still continues, even with lower settings).

And one might thing it's not a biggie as long as I'm not getting false positive notification - but the battery drainage got ridiculous, I lost 16% battery that one day (and the 6 recorded events it's actually me taking in down to test it and reset it) - and it continues, meaning I will need to change battery every week with stats like that, instead of suggested 6 months that were actually a realistic scenario for me before as again - I live in quite empty neighborhood and there is literary nothing in front of my house.

  @Wayne-TP 

No new decorations. Tried with the empty wall already, it was still waking up like crazy.
I'm right now testing another same model doorbell in exact same place, and this one has no issues whatsoever, clearly showing that it's the hardware issue.