10 Best battery operated carbon monoxide detectors of 2025

Save up to 37% off

Best Choice

1

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

Battery Operated Convenience
Operates on 3 AA batteries, ensuring functionality during power failures.

Ideal for Home and Travel
Perfect for home use, garages, and portable enough for travel.

User-Friendly Design
Highly praised for easy installation and portability.
9.9

Exceptional

Our Rating

9.9
Simple to use

9.7
Easy installation

9.7
clearly written
How do we rank?

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Based on millions of stores and reviews

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Value for Money

2

First Alert

FIRST ALERT Carbon Monoxide Alarm | BRK CO250 Battery Operated Carbon Monoxide Detector With 9-Volt Battery & Two Silence Features

37% Off
9.8

Exceptional

Our Rating

9.7
Easy installation

9.5
Precision

9.3
worth the money
3

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

21% Off
Main highlights

Battery Powered Convenience
Operates on 2-AA batteries, includes Test-Hush button for easy testing and silencing.

Ideal for Multi-Level Homes
Perfect for bedrooms and living areas, especially with wood-burning stoves.

Highly Rated Alarm Performance
Praised for its loud, effective alarm and reliable detection.
9.6

Exceptional

Our Rating

9.9
Easy installation

9.7
worth the money

9.7
Simple to use
4

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

Continuous CO Monitoring
Battery-operated, providing uninterrupted monitoring even during power failures.

Ideal for Home Safety
Perfect for bedrooms and each level of your home.

Highly Praised Alarm
Customers appreciate the loud, effective 85-decibel alert.
9.5

Excellent

Our Rating

9.3
Easy installation

9.3
clearly written

9.1
Precision
5

JYSONGHU
Carbon Monoxide Detectors, Replaceable Battery-Operated Carbon Monoxide Alarm Detectors with Digital Display & LED Lights. CO Alarm Applicable to Home, Warehouse

14% Off
Main highlights

Continuous Monitoring for Safety
The detector offers continuous monitoring of CO levels, ensuring family safety with its high-precision electrochemical sensor.

Versatile Installation Options
Ideal for homes, warehouses; can be installed anywhere without needing a socket, unaffected by power failures.

Easy Installation Praised by Users
Customers appreciate the easy installation and clear digital display, enhancing user experience and understanding.
Key specs
- power source:Battery Powered
- alarm:Audible
- sensor:Electrochemical
- battery:3 AA batteries
- dimensions:3.94D x 3.94W x 1.57H
9.2

Excellent

Our Rating

9.9
worth the money

9.3
Easy installation

8.9
clearly written
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6

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
Main highlights

Real-time Monitoring and Alerts
Provides real-time carbon monoxide level monitoring with sound and light alarms.

Versatile and Portable Use
Ideal for home, travel, and various environments like kitchens and garages.

High Sensitivity Sensor
Praised for its advanced sensor that quickly detects CO levels.
Key specs
- power source:Battery Powered
- alarm:Audible
- sensor:Electrochemical
- battery:3 x 1.5V AAA
- dimensions:4.7 x 2.7 x 0.98 inches
9.0

Excellent

Our Rating
7

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

Advanced Electrochemical Sensor
Detects dangerous CO levels accurately and quickly with UL2034 compliance.

Ideal for Older Homes
Perfect for monitoring CO levels in older homes, especially during winter.

Real-Time LCD Display
Praised for its clear CO level readings and ease of use.
Key specs
- 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
8.7

Very Good

Our Rating
8

SITERWELL
Siterwell Carbon Monoxide Detectors, 10 Year Product Life CO Detector with LCD Digital Display and Sound Warning, ETL Listed, Carbon Monoxide Detectors Battery Operated for Home School Office, 1-Pack

25% Off
Main highlights

Key Features
High accuracy ETL-standard CO detection, loud 85dB alarm, intuitive LCD with 3-color LED, 10-year life, and flexible installation options.

Ideal Use Cases
Perfect for homes, schools, hotels, and garages, ensuring safety with advanced sensing technology and easy placement.

Customer Praise
Most reviews highlight the detector`s reliable performance, long-term durability, and the peace of mind it provides.
Key specs
- power source:Battery Powered
- alarm:Audible
- sensor:Electrochemical
- battery:Alkaline
- dimensions:1.4D x 4.7W x 3.14H
8.6

Very Good

Our Rating

9.7
Simple to use

9.7
clearly written

9.5
Easy installation
9

X-Sense
X-Sense Carbon Monoxide Detector, Replaceable Battery Powered CO Alarm with Digital Display, Portable Carbon Monoxide Detector for Travel, XC0C-SR, 1-Pack
Main highlights

10-Year Lifespan and Travel-Friendly Design
Reliable 10-year CO sensor with compact, portable design for travel.

Ideal for Home and Travel Use
Perfect for home safety and peace of mind during travel.

Praised Digital Display
Users appreciate the clear digital display for CO levels.
Key specs
- power source:Battery Powered
- alarm:Audible
- sensor:Electrochemical
- battery:Alkaline
- dimensions:1.3D x 5.6W x 3H
8.5

Good

Our Rating
10

Pumwry

3 Pack Carbon Monoxide detectors,co Detector,Carbon Monoxide Alarm,co2 Detector Battery Powered with LCD Display,Carbon Monoxide Detector,UL2034 Standards,for Home
8.4

Good

Our Rating

9.9
Easy installation

9.9
Precision

9.9
clearly written

10 Best battery operated carbon monoxide detectors of 2025

1

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

9.9

9.7

9.7

How do we rank?

How do we rank?

Analyzing top stores

2

FIRST ALERT Carbon Monoxide Alarm | BRK CO250 Battery Operated Carbon Monoxide Detector With 9-Volt Battery & Two Silence Features

9.7

9.5

9.3

3

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

9.9

9.7

9.7

4

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

9.3

9.3

9.1

5

Carbon Monoxide Detectors, Replaceable Battery-Operated Carbon Monoxide Alarm Detectors with Digital Display & LED Lights. CO Alarm Applicable to Home, Warehouse

9.9

9.3

8.9

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

7

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

8

Siterwell Carbon Monoxide Detectors, 10 Year Product Life CO Detector with LCD Digital Display and Sound Warning, ETL Listed, Carbon Monoxide Detectors Battery Operated for Home School Office, 1-Pack

9.7

9.7

9.5

9

X-Sense Carbon Monoxide Detector, Replaceable Battery Powered CO Alarm with Digital Display, Portable Carbon Monoxide Detector for Travel, XC0C-SR, 1-Pack

10

3 Pack Carbon Monoxide detectors,co Detector,Carbon Monoxide Alarm,co2 Detector Battery Powered with LCD Display,Carbon Monoxide Detector,UL2034 Standards,for Home

9.9

9.9

9.9

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