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10 Best battery operated carbon monoxide detectors of 2026

Save up to 38% off
  • Best Choice

    1

    6 in1 Carbon Monoxide Detector Combo with HD Screen Monoxide Alarm, Detects CO, Natural Gas, Smoke, Temperature, and Humidity for Home, Apartment, Hotel, Camping RV Safety Gifts Idea
    Clicked 27 times in the last month
    Buwheekoki

    6 in1 Carbon Monoxide Detector Combo with HD Screen Monoxide Alarm, Detects CO, Natural Gas, Smoke, Temperature, and Humidity for Home, Apartment, Hotel, Camping RV Safety Gifts Idea

    33% Off
    9.9
    Exceptional
  • Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
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  • Value for Money

    2

    6 in1 Carbon Monoxide Detector Combo with HD Screen Monoxide Alarm, Detects CO, Natural Gas, Smoke, Temperature, and Humidity for Home, Apartment, Hotel, Camping RV Safety Gifts Idea
    Buwheekoki

    6 in1 Carbon Monoxide Detector Combo with HD Screen Monoxide Alarm, Detects CO, Natural Gas, Smoke, Temperature, and Humidity for Home, Apartment, Hotel, Camping RV Safety Gifts Idea

    38% Off
    9.8
    Exceptional

  • 3

    Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
    Kidde

    Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

    9.6
    Exceptional

  • 4

    First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
    First Alert

    First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack

    9.5
    Excellent
    Our Rating

  • 5

    Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
    Kidde

    Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

    10% Off
    9.4
    Excellent
    Our Rating
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  • 6

    2 Packs Carbon Monoxide Detectors,CO Alarm Detector Monitor Battery Operated with PPM Value Display,Carbon Monoxide Alarm with Sound &Light Warning,Accurate & Easy to Read,for Home Kitchen Office
    Sylzy

    2 Packs Carbon Monoxide Detectors,CO Alarm Detector Monitor Battery Operated with PPM Value Display,Carbon Monoxide Alarm with Sound &Light Warning,Accurate & Easy to Read,for Home Kitchen Office

    • power source:Battery Powered
    • alarm:Audible
    • sensor:Electrochemical
    • battery:3 x 1.5V AAA
    • dimensions:4.7 x 2.7 x 0.98 inches
    9.2
    Excellent

  • 7

    Carbon Monoxide Detectors, CO Detector Battery Powered, Carbon Monoxide Alarm with Sensitive CO Sensor, LCD Display and Sound Warning for Home, Bedroom, Kitchen
    SHYEEH

    Carbon Monoxide Detectors, CO Detector Battery Powered, Carbon Monoxide Alarm with Sensitive CO Sensor, LCD Display and Sound Warning for Home, Bedroom, Kitchen

    • power source:Battery Powered
    • alarm:85dB to 215-430ft
    • sensor:Electrochemical sensor
    • battery:3 AA batteries required
    • dimensions:4.25 x 4.21 x 1.93 inches
    8.9
    Very Good

  • 8

    FIRST ALERT Carbon Monoxide Detector, No Outlet Required, Battery Operated, CO400, White, 2 Count (Pack of 1)
    First Alert

    FIRST ALERT Carbon Monoxide Detector, No Outlet Required, Battery Operated, CO400, White, 2 Count (Pack of 1)

    8.7
    Very Good
    Our Rating

  • 9

    Carbon Monoxide Detectors,Carbon Monoxide Alarm/Monitor Battery Operated with Light&Digital LCD Display, Portable Traval CO Detector Alarm for Home,Bedroom,Office,RV,Warehouse
    Chagasort

    Carbon Monoxide Detectors,Carbon Monoxide Alarm/Monitor Battery Operated with Light&Digital LCD Display, Portable Traval CO Detector Alarm for Home,Bedroom,Office,RV,Warehouse

    • power source:Battery Powered
    • alarm:Loud 85dB Alarm
    • sensor:Advanced Electrochemical Sensor
    • battery:3 AAA batteries
    • dimensions:3 x 3 x 0.23 inches
    8.6
    Very Good

  • 10

    Carbon Monoxide Detector, Portable 10-Year Battery CO Alarm with Digital LCD Display, Battery Powered CO Detector for Home, Office and Travel
    KARUOTOP

    Carbon Monoxide Detector, Portable 10-Year Battery CO Alarm with Digital LCD Display, Battery Powered CO Detector for Home, Office and Travel

    17% Off
    • power source:Battery Powered
    • alarm:Audible
    • sensor:Electrochemical
    • battery:1 Lithium Metal
    • dimensions:5.31 x 0.98 x 2.76 inches
    8.5
    Good