I have been using this door since September. I did have an issue with the solar panel not charging enough when the days got shorter, and after a phone call to the company they quickly talked me through resolving the issue. I only needed to add an additional solar panel to charge the 12v battery which they sent to me free of charge. Now with 2 panels charging the battery, it really works well. So well that i am considering putting another one on the other end of the coop so i can add another run. The customer service was great I guess because I was dealing directly with the company who made the door. They seemed to really be concerned with making their customers happy. I would suggest to anyone having an issue that they should call the pullet door guys directly.