How To Replace The Battery In My Nest Thermostat. The Nest Thermostat charges its built-in battery using the HVAC systems steady power supply. Some of the common issues you will find online might include the nest thermostat battery wont charge or the nest thermostat not charging.
If your Nest Thermostat is constantly searching for a network to join the battery is going to drain much faster. Remove the Nest device from the wall and plug it in using a Micro USB. Remove the old batteries from the back of the thermostat display.
The process can take between one to two hours.
If your battery is low you may have a wiring issue. They dont encourage that the users change thermostats batteries. A C-wire is also commonly used to complete the circuit if needed. To check your battery level.
