Article Summary:
When it’s time to replace your Nest Protect’s batteries, you can follow the steps in this article to learn how.
How will I know if I need to replace the batteries in my Nest Protect?
If its batteries are getting low, your Nest Protect will let you know. You will receive a message during Nightly Promise and receive a notification in the Nest app.
What type of batteries should I use with Nest Protect?
When replacing the batteries for your Nest Protect, it's important to use only new Energizer Ultimate Lithium AA (L91) batteries. Your Nest Protect may not operate properly with other types of batteries or if old batteries are mixed with new ones.
Each kind of Nest Protect has different instructions for replacing the batteries. Select the kind of Nest Protect that you have:
2nd gen battery powered Nest Protect2nd gen wired Nest Protect
1st gen battery powered Nest Protect
1st gen wired Nest Protect
How can I tell which Nest Protect I have?
How to replace the batteries in your 2nd gen battery powered Nest Protect
How and when should I test my Nest Protect?
1) Remove your Nest Protect from its backplate. Turn it counter-clockwise until it comes loose.
2) Push the battery door button in the direction of the arrow. The door will spring open.
3) Replace all of the batteries with new Energizer Ultimate Lithium AA batteries (L91). Be sure to match the positive "+" and negative "-" ends of the batteries with the markings in the battery compartment.
4) Close the battery door. It will click into place. For your safety, the battery door will not close until all 6 batteries are inserted.
5) Using the notches on the bottom of your Nest Protect as a guide, place your Nest Protect against its backplate, and turn it clockwise until you feel the backplate grip.
6) Press the Nest button twice to test your Nest Protect. This will help make sure you've replaced the batteries correctly.
How to replace the batteries in your 2nd gen wired Nest Protect
How and when should I test my Nest Protect?
1) Turn the power to your Nest Protect off at the breaker box.
2) Remove your Nest Protect from its backplate. Turn it counter-clockwise until it comes loose.
3) Detach the power connector.
4) Push the battery door button in the direction of the arrow. The door will spring open.
5) Replace all of the batteries with new Energizer Ultimate Lithium AA batteries (L91). Be sure to match the positive "+" and negative "-" ends of the batteries with the markings in the battery compartment.
6) Close the battery door. It will click into place. For your safety, the battery door will not close until all 3 batteries are inserted.
7) Reattach the power connector.
8) Using the notches on the bottom of your Nest Protect as a guide, place your Nest Protect against its backplate, and turn it clockwise until you feel the backplate grip.
9) Turn the power back on at the breaker box.
10) Press the Nest button twice to test your Nest Protect. This will help make sure you've replaced the batteries correctly.
How to replace the batteries in your 1st gen battery powered Nest Protect
Push down the small latch at the bottom of the battery compartment so that you can insert the last battery and properly close the battery door.
How and when should I test my Nest Protect?
1) Remove your Nest Protect from its backplate. Turn it counter-clockwise until it comes loose.
2) Using a Philips screwdriver, unscrew the two screws from the battery door.
3) Replace all of the batteries with new Energizer Ultimate Lithium AA batteries (L91). Be sure to match the positive "+" and negative "-" ends of the batteries with the markings in the battery compartment.
4) Reattach the battery door. Slide it into the tabs located on the opposite side of the batteries and replace the screws. For your safety, the battery door will not close until all 6 batteries are inserted.
5) Place your Nest Protect onto its backplate and turn it clockwise until you feel the backplate grip.
6) Press the Nest button twice to test your Nest Protect. This will help make sure you've replaced the batteries correctly.
How to replace the batteries in your 1st gen wired Nest Protect
Push down the small latch at the bottom of the battery compartment so that you can insert the last battery and properly close the battery door.
How and when should I test my Nest Protect?
1) Turn the power to your Nest Protect off at the breaker box.
2) Remove your Nest Protect from its backplate. Turn it counter-clockwise until it comes loose.
3) Detach the power connector.
4) Using a Philips screwdriver, unscrew the two screws from the battery door.
5) Replace all of the batteries with new Energizer Ultimate Lithium AA batteries (L91). Be sure to match the positive "+" and negative "-" ends of the batteries with the markings in the battery compartment.
6) Reattach the battery door. Slide it into the tabs located on the opposite side of the batteries and replace the screws. For your safety, the battery door will not close until all 3 batteries are inserted.
7) Reattach the power connector.
8) Place your Nest Protect onto its backplate and turn it clockwise until you feel the backplate grip.
9) Turn the power back on at the breaker box.
10) Press the Nest button twice to test your Nest Protect. This will help make sure you've replaced the batteries correctly.