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10 Best carbon monoxide detectors batteries of 2026

Save up to 42% off
  • Best Choice

    1

    4 in 1 RV Carbon Monoxide Detector and Propane Gas Alarm, LP/CO Detector with HD Screen Display, Hardwired Natural Gas Leak Detector 12V DC, CO Alarm for RV Travel Trailer, Truck Camper (Black)
    TMEOIIPY

    4 in 1 RV Carbon Monoxide Detector and Propane Gas Alarm, LP/CO Detector with HD Screen Display, Hardwired Natural Gas Leak Detector 12V DC, CO Alarm for RV Travel Trailer, Truck Camper (Black)

    9.7
    Exceptional
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  • Value for Money

    2

    Carbon Monoxide Detector Plug in: 6-in-1 Natural Gas & Smoke Alarm with Magnetic Base & Battery Backup - Portable Combustible Gas Leak Detectors for Home, RV, Travel, Camper
    KJYSDS

    Carbon Monoxide Detector Plug in: 6-in-1 Natural Gas & Smoke Alarm with Magnetic Base & Battery Backup - Portable Combustible Gas Leak Detectors for Home, RV, Travel, Camper

    42% Off Limited Time Deal
    9.6
    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

    9.4
    Excellent

  • 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

    9.3
    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
    9.2
    Excellent
    Our Rating
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  • 6

    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

  • 7

    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
    8.7
    Very Good

  • 8

    Kidde Carbon Monoxide Detector, Plug in Wall with AA Battery Backup, Test-Hush Button
    Kidde

    Kidde Carbon Monoxide Detector, Plug in Wall with AA Battery Backup, Test-Hush Button

    8.5
    Good

  • 9

    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)

    8.3
    Good
    Our Rating

  • 10

    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
    8.2
    Good