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How Often Do Nest Thermostats Need To Be Charged?

Last Updated Mar 30, 2022
wires coming out of a wall

The Nest thermostat is one of many different members of the Nest smart home product family, including security cameras, doorbells, and smoke and carbon monoxide detectors. Nest thermostats are a great way to monitor and adjust the temperature in your home and to lower your energy consumption; since it is doing all of this, how often does it need to be charged?

The Nest thermostat rarely needs to be charged. If your Nest thermostat is wired to your home, it doesn’t need recharging. If your power goes out, your Nest thermostat will work for two hours. Depending on your model, it can be recharged, or the batteries need to be replaced.

Since it doesn’t need to be charged so often, the Nest thermostat is one of the best ways to optimize your home heating and cooling. Knowing when to charge the Nest thermostat battery and actually charging it is very easy. There are also things you can do if you notice your Nest thermostat battery is constantly draining. 

How Long Does the Nest Thermostat Battery Last?

The Nest thermostat is constantly working and adjusting the temperature in your home. It will give you alerts when things need to be changed or if something is wrong. Since it is always working so hard, how long does the Nest thermostat battery last?

The Nest thermostat battery will last for up to two hours without an additional power supply. 

With being hooked up to the electricity in your home, the Nest thermostat battery will always be charged. The battery in the system itself will last about two years before needing to be replaced.

How Do I Know the Nest Thermostat Needs to be Charged?

Before charging your Nest thermostat, you should see if it even needs to be charged. Charging a Nest thermostat or any electronic device without it truly needing to be charged can lower the battery life over time. Will the Nest thermostat tell you if it needs to be charged?

One sign that you can follow is that the screen is off and won’t turn on. It will also be unresponsive. Another sign is that you can’t operate the thermostat from the app or adjust the temperature from the device itself.

If you don’t charge your Nest thermostat, the screen will turn off, and the system will disconnect from the Wi-Fi. It will still function until the battery is completely drained.

How to Charge the Nest Thermostat

Once you know your Nest thermostat needs to be charged, doing so is simple. You can recharge the following Nest thermostats:

Follow these quick steps to charge your Nest thermostat:

  1. Remove the Nest thermostat display.
  2. Find the Nest thermostat USB port.
  3. Depending on your model, plug in the Nest thermostat with a micro-USB or mini-USB into your computer or a wall charger.
  4. There will be a blinking light on the front of the Nest thermostat 
  5. Allow your Nest thermostat to charge.

How Long Does the Nest Thermostat Need to be Charged?

When you’re charging your Nest thermostat, it should take half an hour to an hour for it to be completely charged. It can take up to two hours if you recharge it from an empty battery.

How to Know When the Nest Thermostat is Fully Charged

You will know that your Nest thermostat is completely charged when the blinking light at the top of the Nest thermostat stops blinking.

Battery Operated Nest Thermostat

Not all Nest thermostats can be recharged. One version, the Nest Thermostat, doesn’t have a USB port to recharge it. If you see a low battery sign on your Nest Thermostat, you need to replace the batteries. The Nest Thermostat takes AAA batteries.

Why Does my Nest Thermostat Battery Keep Dying?

If you find that you’re charging your Nest thermostat more often than when you lose electricity for more than a few hours, there may be something wrong with the Nest thermostat itself or the battery. Some reasons why the Nest thermostat battery is quickly draining are:

  • The Nest thermostat battery needs to be replaced. 
  • The electricity from the circuit breaker in your home isn’t flowing to the Nest thermostat correctly. You will need to install a common wire to fix this.
  • You might have blown a fuse and not realized you need to reset the fuse in the circuit breaker. You will need to reset the area on your circuit breaker.

If you find any of these are the reasons why your Nest thermostat battery is quickly dying, you should take the proper steps to fix them. If none of those solutions work, consider contacting Nest customer support for further assistance.


The Nest thermostat is an excellent way to optimize the heating and cooling costs in your home. It will efficiently work with your smart home and help you modify your energy usage. Sometimes the Nest thermostat battery may die faster than it should. If this is the case, try some simple fixes or contact customer support.

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