How long will the battery last?
A battery camera on a quiet side door and the same camera over a busy driveway are not the same camera. Tell us how busy your spot is and this works out roughly how long it runs between charges, using Alarm.com’s own power figures for each model.
When it does need charging: on the 781B doorbell the battery lifts out, so the doorbell stays on the door — Alarm.com's video shows how. On the V731B camera the whole camera comes off its magnetic mount, or you add the solar panel and it looks after itself.
These are estimates, not a promise. Deep cold, weak Wi-Fi and an older battery all shorten real-world life, and an Ottawa January shortens all three at once. If the number here looks tight for where you want the camera, a wired camera is usually the better answer — tell us the spot and we will say so honestly.