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Customer reviews for Kidde 4" Compact Battery Powered Smoke Detector, AA Batteries Included for
Kidde 4" Compact Battery Powered Smoke Detector, AA Batteries Included
4.5 out of 5 stars
stars
92 ratings92 reviews
  1. 5 stars80% (74)
  2. 4 stars8% (7)
  3. 3 stars2% (2)
  4. 2 stars1% (1)
  5. 1 star9% (8)

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Showing 1-10 of 92 reviews
Jul 29, 2026
Reviewer name: Chas
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Small, but really loud. They work really well.

I was kind of nervous when I saw the size of box that two of these came in, but when my husband hooked them up and tested them and we heard the sound they put off we realized that size does not matter. It is loud enough for us to hear from far away. We have one at one towards our room and one by the kids' room. I'm very happy with this purchase. We replaced our much older, much bigger ones for these. I couldn't be happier, plus they come with batteries. What else could you ask for.

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

We're so glad you're happy with the look and loudness of your new alarms! Thanks for making Kidde a part of your home safety plan. As a best practice, we recommend testing your new alarms once a month!

Aug 6, 2026
Reviewer name: Sissy
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great value! Getting 2 for the price was good. Easy to install and they’re loud!! Would buy again. We have tested them and they work great.

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

Thanks for sharing, Sissy. We’re glad you found the Smoke Alarms easy to install and a great value. It’s also great to hear you tested them after installation to make sure they’re ready to help protect your home. We appreciate you choosing Kidde!

Jan 1, 2026
Reviewer name: James
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Reliable brand

I wanted UL listed reliably designed alarms for my workshop and garage. I installed these on new years so it will be easy to remember to replace the two cheap AA cells each year as a routine. Low battery chirping in those locations will not be too bothersome. The mounting plates are easy to install. In some cases the power goes out (Blown circuit breaker caused by a shorting appliance) before the alarm can sound so AC detectors are of limited value. Lithium batteries last much longer but they also cost much more and I recycle all of my used batteries anyways. I tested these with cigarette smoke and they responded fast. Keep in mind that 10 year old detectors should always be replaced. I have no fire insurance and 5 smoke detectors as well as 4 extinguishers and three fire blankets.

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

Thanks so much for your thoughtful feedback, James, and for taking such a proactive approach to fire safety!

Aug 29, 2026
Reviewer name: Kimberly
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great compact skoke alarms.

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

Kimberly, we’re glad the compact size of these Smoke Alarms works well for your space. Thank you for choosing Kidde and for making alarms part of your home safety plan.

Aug 26, 2026
Reviewer name: Gerald
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Up In Smoke

worked great. good price. Happy with my purchase.

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

Thanks for sharing, Gerald. We’re glad the product worked well and offered a great value. Be sure to follow the user guide for recommended testing and maintenance to help keep your safety product ready when needed.

Aug 26, 2026
Reviewer name: Lourdes
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Good value for the price.

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

Thank you for your encouraging review, Lourdes!

Aug 4, 2026
Reviewer name: kim
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

needed 2 new ones to for the house , best deal.

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

Thanks for sharing your experience with us! We recommend testing and cleaning your alarms regularly to ensure they remain functioning properly. We appreciate you choosing Kidde!

Aug 7, 2026
Reviewer name: Anonymous
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Can't be two for the price of one. They work very well.

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

Thanks for sharing, Toni. We’re glad you’re happy with the value and performance of your alarms. As a helpful reminder, be sure to check the manufacture date on your alarms so you’ll know when they reach the end of their service life. We appreciate you choosing Kidde to help protect your home.

Jul 29, 2026
Reviewer name: Mary
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

satisfied

Great value for a great price

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

Thanks for sharing this Mary, we're so glad to hear you're loving your new alarms! As a best practice, we recommend testing them once a month!

Aug 30, 2026
Reviewer name: Gary
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

they went bad after 2 months!! kept beeping changed batteries and kept beeping

Review from walmart.com
Helpful?4EW9A5XL3DG813849772213
reply from Kidde Expert

Gary, we understand how frustrating continued chirping can be, especially after only two months and after you’ve already replaced the batteries. Different chirp patterns can indicate different alarm conditions, so our Product Support team can help identify what your alarm is communicating and determine the appropriate next steps. Please call 1-800-880-6788 with your alarm available so our team can help troubleshoot.