Troubleshoot when nothing happens after removing 1st gen Nest Protect's battery tab

This article is for 1st gen Nest Protect. Check which Nest Protect you have.

If you don’t see a blue light or hear the welcome message after removing the battery tab, the batteries may need to be re-seated. To fix the problem, you will need to remove the batteries and clean out any pieces of the battery tab that are left in the battery tray.

Here’s how: 1. Remove the two screws on the back of Nest Protect with a small Phillips screwdriver and take off the cover. 2. Remove the batteries in each battery tray, make sure no pieces of battery tab remain, and reset the batteries in the proper orientation. 3. Press down on each battery to make sure that both ends are touching the Nest Protect contacts. Note: You will need to push the spring-loaded battery so it stays out of the way to get the third battery into each tray.         3. Once the batteries are reinstalled, reattach the battery door by sliding it into the tabs located on the opposite side from the batteries and replacing the screws.