Extend your doorbell's battery life.
Made of efficient solar cells, the Wasserstein Solar Panel stores up solar energy and charges your Nest Doorbell (battery) whenever it is needed. At temperatures between -4°F (-20°C) and 32°F (0°C), the doorbell will continue to work, but the battery will drain because it can’t be charged in below freezing temperatures. If the battery drains completely, the doorbell will shut down and it will need to be brought indoors for it to charge again.
 
Minimize downtime by keeping your doorbell powered.
A 360-degree mounting bracket lets you adjust the solar panel to maximize sunlight exposure.