How To Replace Nest Smoke Detector Battery. 1st gen wired Nest Protect Turn the power to your Nest Protect off at the breaker box. Remove your Nest Protect from its backplate.
On the opposite side of the batteries and replace the screws. You will need to replace Nest Protect after 7 years with a brand new Nest Protect. 2 smoke detector uses 3 lithium AA batteries.
I needed to replace my Nest Protects batteries after the smoke and carbon monoxide alarm warned me it was time.
How often change batteries Nest Protect. 1st gen wired Nest Protect Turn the power to your Nest Protect off at the breaker box. Logo and pull and rotate firmly to detach the. Many smoke and carbon monoxide detectors use a 9v battery.

