If Google Nest Protect chirps or notifies you in the app that the batteries are low after initial setup it's possible that the batteries’ voltage has temporarily dropped. This can sometimes happen when it takes longer than expected to connect your new Nest Protect to your Wi-Fi network and add it to your account. There are a couple of solutions depending on what you see and hear.
If you get a low-battery message in the app but Nest Protect doesn't chirp
If you get a message in the Nest app right after you’ve added your Nest Protect to your account but you don’t hear a chirp, go ahead and mount it on your wall or ceiling. Wait a day or two and see if the issue resolves itself.
If you hear a low-battery chirp from Nest Protect
If your Nest Protect chirps right after you've added it to your
If this doesn’t work and you need to replace the batteries in your Nest Protect with fresh new batteries:
- Only use Energizer Ultimate Lithium AA (L91) lithium-ion batteries.
- Make sure you do not use alkaline batteries.
Note: If a blue light doesn't appear or you don't get a welcome message after removing the battery tab, the batteries may need to be pushed back into place or part of the battery tab may have broken off. To fix the problem, use the steps in this help center article to remove the batteries then check for pieces of the battery tab that are left in the battery tray and put the batteries back in.