Last week I have received the Nest Hello Doorbell (battery) powered. I removed the old button (bell) and installed the device smoothly. Because there are some extra options when you power it using the bell transformator, I later on installed the Doorbell on the auxiliary power. (8W transformator/ 1A). This worked fine, when I checked the settings the doorbell was externaly powered. So far so good. But after a couple of days, the doorbell was switching back to batterypower. The percentage battery dropped down to 61%. Contacted google support, the advice was to reinstall the application on Google Home and then choose external power (instead of battery power). That worked, for a couple of hours unfortunaltely. The doorbell is again back to battery power.
I want to use the external power because it also is connected to a mechanical gong. This makes a much more louder sound than the Google mini. When a person presses the doorbell I mostly miss it because the sound on the mini is too soft. I can turn it louder, but when my family plays music they turn the volume down, and the bell sound is very weak. I also find no settings in the home application to make a louder volume on the mini when somebody rings the bell.
The reinstall the application every couple of hours is a workaround, but not a good one 🙂 Maybe the auxilairy power has nog enough power (1A / 8V)? Or maybe the cold temperatuur outside (2 degrees Celsius)?
Before I forget I checked all the cables with a universal voltage device and they are ok.
