Solar charger for wired doorbells

I have wired doorbells in the front and back. The back has minimal motion detection settings, to the point where I wouldn't want to reduce them any further. My batteries require charging almost every other week. This isn't peace of mind as my settings are much less coverage than I would prefer. It is also inconvenient as I must charge so often. I bought the solar chargers for both Ring 1 and Ring 2, i was then told neither of which are compatible with hard wired doorbells. I would like to see an accessory that charges my battery enough so my motion settings are so restricted.