Does hardwiring maintain the battery charge level or infact charge it up (trickle effect)

I have the Ring video doorbell 3 and recently had the correct transformer fitted so it is now hardwired. In the Device Health part of the app it now recognises the Power Source as hardwired. The battery status has remained at 72% since the transformer was fitted on Tuesday last week . I had assumed the hard wiring would trickle charge the battery , can anyone confirm should it do this or simply maintain the charge.
Thanks in advance.

A post was merged into an existing topic: Ring Video Doorbell 3 - charging battery when hardwired