Best Nest Smoke Detector Battery Life

First Alert CO605A Carbon Monoxide Plug-In Alarm with Battery Backup + Amazon Basics 9 Volt Alkaline Batteries (4 Pack)

Google Nest Doorbell - Battery - Snow

Kidde Smoke Detector, Hardwired with Battery Backup & Interconnect, Battery Included

First Alert 9120BA Hardwire Smoke Alarm w/ 9V Battery, Smoke Detector

Google Nest Protect - Battery

First Alert Battery Operated Wireless Interconnect Smoke and Carbon Monoxide Alarm

X-Sense 10 Year Battery (Not Hardwired) Smoke and Carbon Monoxide Detector with Display, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, SC01

YoLink Smart Home Starter Kit: Water Sensor 4-Pack & Hub Kit - Sensor Compatible with Alexa and IFTTT, 1/4 Mile Range, Instant Remote App, Text(Limited) and Email Alert

SITERWELL Smoke Detector Fire Alarm with Magnetic Fastening Kit and Built-in Battery, Fire Safety with Photoelectric Technology for Home Bedroom and Babyroom, UL Listed, GS528A, 6 Packs

Energizer 123 Lithium Batteries, 3V CR123A Lithium Photo Batteries (6 Battery Count)