Video Doorbell Pro - does doorbell wiring provide primary power?

I have a video doorbell (battery) from a different manufacturer that I have hardwired my home's existing 16v doorbell wiring. The wiring trickle charges the doorbell camera's battery; it is not the primary power for the camera. The problem is that I live on a busy city street with a lot of pedestrian traffic and the camera's battery loses its charge in a few days and the entire unit needs to be removed from its mount to charge it (which takes 4+ hours).

Will the SimpliSafe Video Doorbell Pro work better for me? In other words, is it powered from the doorbell wiring and the battery is only for backup (which would be ideal)? Or, is it like the my other doorbell camera and the wiring only provides a trickle charge (which would not work for my use)?