Battery is not charging-Doorbell 3

Yesterday I noticed my battery was at 15% capacity. I plugged in it to charge overnight, so it was plugged in 12+hours. Before I unplugged it, I saw a solid orange and a solid green light. I put the battery back into the doorbell and checked the app. It still showed the battery at 15%. I reset the doorbell by removing the faceplate and pressing the orange button. I reconnected the doorbell to the wifi network. After the reset, the battery is still showing 15%. I only have one battery for the unit.