Ring doorbell 3 no power. Battery fully charged

Noticed today that when delivery driver was dropping off parcel that my ring 3 wasn't working. No power at all and no lights. Last health check showed that the device had 22% battery remaining. I assumed a dead battery so i removed it. When i plugged the battery in to charge, both lights illuminated and so i assumed that was the problem. Inserted the battery back in to the doorbell when it was fully charged and still nothing. I have tried rebooting the Wi-Fi and pressing the orange reset button for 10 seconds to no avail. Any ideas or do i have a dead doorbell? Kind regards,Nathan