Nest Thermostat (Gen 2/3) Battery

This Nest Thermostat (2nd and 3rd Gen) replacement battery is what you need to bring your dead thermostat back to life!

Battery degradation is an inevitable part of your thermostat’s lifespan ¡ª extend it with this replacement battery compatible with the 2nd and 3rd generation Nest Thermostat. If your thermostat won¡¯t turn on, won¡¯t hold a charge, or you simply experience poor battery life, this replacement battery may be what you need to fix it.

For optimal performance, calibrate your newly installed battery: Charge it to 100% and keep charging it for at least 2 more hours. Then use your device until it shuts off due to low battery. Finally, charge it uninterrupted to 100%.