Some Google Nest products have batteries that need to be replaced every once in a while. This article provides helpful details about the type of batteries your Nest product uses.
Select a product below to learn more.
Nest cameras
Nest Cam (battery) has an internal rechargeable battery so that it can stay powered without being plugged in and can have backup power when the electricity goes out.
When its battery is low, you’ll need to recharge it. If needed, you can also troubleshoot power issues for the Nest Cam (battery).
All other Nest cameras connect to plug-in power through a standard household outlet and don’t use batteries.
Nest doorbells
Nest Doorbell (battery) has an internal rechargeable battery so that it can work without being wired to a doorbell system. You can also choose to connect it to your current doorbell’s wires. In this case, it will use the wires to charge the battery, and have backup power if the electricity goes out.
When its battery is low, you’ll need to recharge it. If needed, you can also troubleshoot power issues for the Nest Doorbell (battery).
While Nest Doorbell (wired, 1st gen and 2nd gen) has a small internal battery that assists with sounding the chime, it cannot keep your doorbell powered on its own. Because it connects to your doorbell system’s wires for power, it will not have backup power if there’s a power outage.
Nest thermostats and temperature sensors
Note: Go to How to tell which Nest thermostat you have if you’re not sure which Nest thermostat you have.
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Nest Thermostat The Nest Thermostat uses 2 standard 1.5 V AAA alkaline batteries that you’ll need to replace when they get low. When the batteries start to get low, you’ll get notification on the thermostat and in the Home app. You can check the battery power level on the thermostat or in the Home app. |
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Nest Thermostat E and Nest Learning Thermostat Your Nest thermostat includes an internal rechargeable battery that helps it stay powered on. This battery is not user replaceable. It was designed to constantly charge and discharge as needed throughout the life of your thermostat. Tip: If your thermostat won’t turn on or if its battery won’t stay charged, it’s usually because it’s not getting enough power from your household wiring. See our article about troubleshooting thermostat power issues. |
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Temperature sensor The Nest Temperature Sensor uses one disposable battery that you’ll need to replace when it gets low. Replace it with 1 CR2 3V Lithium battery. When the sensor’s battery starts getting low, your thermostat will send a push notification to the Nest app, and another notification when the battery is critically low. |
Nest Protect CO and smoke alarm
There are two different options for Nest Protect: wired or battery powered (how to tell the difference). Both use disposable batteries that will need to be replaced every so often.
When your Nest Protect’s batteries start getting low, it will send an alert to the Nest app on your phone. In addition, like traditional smoke and CO alarms, Nest Protect will begin to chirp when the batteries get critically low.
Nest Protect (battery powered) uses 6 Energizer Ultimate Lithium AA (L91) batteries as its sole power source.
Nest Protect (wired) uses 3 Energizer Ultimate Lithium AA (L91) batteries as backup if your household power goes out.
Nest Connect
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The Nest Connect includes an internal rechargeable battery. This battery is not user replaceable. It was designed to constantly charge and discharge as needed throughout the life of your product. |
Nest Secure alarm system
Your Nest Secure alarm system includes three different components.
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The Nest Guard includes an internal rechargeable battery. This battery is not user replaceable. It was designed to constantly charge and discharge as needed throughout the life of your product. |
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Each Nest Detect sensor uses one disposable battery that will need to be replaced when it gets low. The Nest app will notify you when this happens. Only replace Detect’s battery with a new Panasonic CR123 or Energizer CR123A lithium battery. |
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Your Nest Tag key fob doesn’t use batteries. There’s nothing to replace. |
Nest × Yale Lock
The Nest × Yale Lock uses four standard AA alkaline batteries that will need to be replaced when they get low.
Your lock will send an alert in the Nest app on your phone when the lock’s batteries are getting low, and a second alert when they’re critically low.
Check and change your Nest × Yale Lock's batteries
Tip: If you get locked out of your house because the batteries died, there’s a way to temporarily revive your lock using a 9V battery, so you can get into your home and change the batteries.