Article Summary:
If the batteries are too low for Nest Protect to update its software, you will need to replace the batteries and Nest Protect will automatically update.

When its batteries run low, Nest Protect takes extra power saving measures to ensure that it has enough battery charge to alert you in case of a smoke or carbon monoxide emergency. For instance, it will disable Pathlight and postpone software updates.

When this happens, you’ll get a low battery message that tells you that the software can’t be updated. Replace the batteries as soon as possible, and Nest Protect will automatically download the update.

How do I replace Nest Protect batteries?

However, in some cases, the batteries aren’t low enough for you to get a low battery message, but if a software update becomes available, Nest Protect will still postpone the download to preserve battery power.

You’ll likely see a low battery message only if you have a battery powered Nest Protect. If you have a wired Nest Protect and see this message, follow the steps in the following article:

How to troubleshoot power issues with Nest Protect (Wired 120V)