The Ring Solar Mount Charger only requires a few hours of direct sunlight each day to keep your Doorbell charged using an environmentally friendly method It mounts securely via the included bracket This solar panel features a weather-resistant design with an adjustable mounting bracket It has a power connection of 3.96 meters (13-ft.) cable with weatherproof barrel connector and a solar power rating of 2.2W, 5.2VDC Not compatible with the original Ring Video Doorbell Convenient power to help charge and extend the battery life of your Ring Video Doorbell 3 or Ring Video Doorbell 3 Plus Requires several hours of direct sunlight every day. The ability to recharge varies based on device settings, motion notifications, and sun exposure in the area of placement - not ideal for porches Only works with Ring Video Doorbell 3 and Ring Video Doorbell 3 Plus (doorbell sold separately)