Unfortunately, Google isn't selling them anymore, nor, it seems, is anyone else. We have Google Nest Outdoor Cameras and are wondering what we'll do if our power supplies die. Here's another thread on the same issue:
All Google Nest is offering is a form to fill out if you are within the one-year warranty:
Why doesn't Google Nest resume selling power adapters for the Google Nest Outdoor Camera?
Lots of us Google Nest customers have these cameras and they are not that old. We own three Google Nest Outdoor Cameras that are 30 months, 22 months, and 17 months old. We have been seeing posts like this one in this forum from customers whose power adapters are now failing. We are now worried about what we will do if our power adapters fail.
All of your feedback has been submitted if requested. At this time, I'll go ahead and lock this thread. If you're still experiencing problems, feel free to start a new thread and we'll be happy to help.