Nest thermostat battery won’t charge

Nest thermostat battery won’t charge. You can control your HVAC systems from your phone with the Nest Thermostat.

The Nest Thermostat is powered by a battery to ensure that power is not interrupted in the event of a power loss or other unforeseen circumstances.

As a result, you must guarantee that the NEST thermostat is always turned on. You must, however, understand how it works.

Not only that, but this also assures that the thermostat is powered by the correct voltage rather than the alternating current in the circuit.

Nest thermostat battery won’t chargewhy nest thermostat battery won't charge

Most of the time, this works flawlessly, but you may run into problems, such as the battery not charging.

You can change the temperature settings in multiple rooms and get useful information by utilizing a single app. As a result, it’s a useful tool for homeowners.

Unfortunately, no technology is flawless, and Nest Thermostat somewhat began to malfunction after a couple of years of use.

Connection to battery

  • The Nest Thermostat charges its built-in battery using the HVAC system’s steady power supply.
  • This is when the C-wire from your Nest Thermostat comes in handy, as it completes the circuit.
  • The C-wire may have become loose or stopped operating properly in some circumstances.
  • As a result, it’s critical to thoroughly inspect the C-wire.
  • If dealing with the C-wire is a hassle, know that a Nest Thermostat can be installed without one.

Trouble in Softwaretrouble in software

Software difficulties are one of the most prevalent causes of your NEST Thermostat not charging.

However, you may breathe a sigh of relief because you can quickly fix them, making it an easy job to tackle the problem at home without any technical knowledge.

The following are a few things you should start with:


The first and most important troubleshooting action you should take to resolve this issue is to restart the thermostat. Turn off your thermostat, wait a few moments, and then turn it back on.

Then when you’ve properly restarted the thermostat, it’ll take care of any charging troubles you might be having, allowing you to get the thermostat to charge again and use it without any problems.


Then when you’ve properly restarted the thermostat, it’ll take care of any charging troubles you might be having, allowing you to get the thermostat to charge again and use it without any problems.

Trouble in hardwarenest thermostat hardware

There are a variety of hardware issues that can cause your NEST thermostat to not charge.

These difficulties may be a little more difficult for you to diagnose and resolve, but you can still resolve them.

You’ll need to try the following hardware fixes:

  • You may now need to use an external charging wire to charge the Thermostat Screen.
  • The best feature of NEST Thermostats is the ability to remove the screen from the wall fitting. So, all you have to do is remove the screen, charge it for 4-5 hours using a micro USB cord, and it will work for you.

The reason for this is that your grid may not have the appropriate voltage, which will prevent the Thermostat from charging. As a result, charging it with an external charger should suffice.

USB Chargingnest thermostat battery replacement

There are also small changes when it comes to charging the battery.

You can try charging your Nest Thermostat E or Nest Learning Thermostat Battery manually with a Mini-USB cable for your Nest Learning Thermostat (1st Gen) or a Micro-USB cable for your Nest Thermostat E and Nest Learning Thermostat Battery to temporarily solve your battery.

Nest thermostat battery Replacement

If nothing works in your case, then go for the replacement of your battery. Just the Nest Thermostat devices’ batteries can be replaced; the Nest Thermostat E and Nest Learning Thermostat ranges cannot.

When your Nest device displays a low battery warning, it’s time to replace the batteries in your Nest Thermostat; here’s how:

  • Remove the Nest Thermostat from the display.
  • Remove the old AAA alkaline batteries from the back and turn them around.
  • Replace the device’s batteries with new AAA alkaline batteries.
  • Return the device to its original position on the display.


Shortly, it won’t take long to figure out why the Nest Thermostat battery wasn’t charging. It was about as simple as resetting the Nest Thermostat’s delayed message.

It’s critical to understand why your Nest Thermostat’s battery levels are low to guarantee that it’s performing properly.

Dealing with low battery issues with the Nest Thermostat E and Nest Learning Stat may be a little more difficult.

It’s ideal if you double-check whether the unit is properly wired, receiving a consistent power source, or whether the battery is running low. Here read out why Honeywell Thermostat Flashing Cool On.

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