A:Answer One charger for all four. The base system is plugged in to your router, charger is separate and just like a phone charger. You have options of magnet placements (great for on fences, etc) and then one stand that the camera just screws into. On the app it tells you the battery status so you just charge the cameras individually as needed and replace to their stand. Name your cameras, but if one's low battery, you can switch a better charged one to another spot if you need to while charging.
