I have had one of these for a few years and several months ago the charger just stopped charging. Before that I had no problems. I called Ring and they initially replaced the charger. It didn’t charge the battery. I bought a $7 multimeter at Harbor Freight and even when not in 100% sun there are over 3 volts coming from the charger. I called ring again and explained my testing and that I had factory reset the doorbell. I also replaced the battery from a ring spotlight which has a solar charger. The battery that was not charging in the doorbell had no issues charging in the spotlight. They sent me a replacement doorbell and it will not charge either. I suspect that a faulty firmware has been released In the ring doorbell 2. I’m going to call again and ask to speak to a manager and will keep escalating until I can get development engaged.