Battery losing 15% per 24 hours even when hard wired

I have a Ring Doorbell 3 and until last week it was brilliant. Its been running for a year with no problem.

Its hard wired and never dropped below 98% battery.

Last week I checked the health to find it had 20% battery so I charged it and three days later it was down 45% So I ordered a new battery to rule out a dead cell and with the new battery the same issuè occurs.

No change to the config and the device shows that it is hard wired. I have metered the bell wire and get 18v AC.

I turned off all motion detection and recording and still the battery drains.

Any suggestions?

A post was merged into an existing topic: My ring doorbell is hardwired but showing a low battery why?