We’re here to help, @AJJ. The best factors to consider for obtaining a proper solar charge are several hours of direct sunlight, efficient wifi signal strength, and accurate events. Direct sunlight is most important for ensuring the Solar Charger is able to provide the intended power. Poor wifi signal or too many events can make your Video Doorbell work harder, thus resulting in battery drain. Feel free to check out my response above about battery draining for more information. I hope this helps! 