Ring Video Doorbell Transformer Compatability

Hi -

Both are Ring Video Doorbells. They are installed (approx 5 months now). They are hardwired - one on the front door, one on the side door. They are both connected to the same doorbell and transformer (that were there already). They both show as hardwired in the app. Unless I dial down the settings, however, the battery level drops slowly. I assume that this means I need a higher output transformer but wanted to confirm that.

David