Customer Reviews for Duracell 21/23 Alkaline Battery, 2/Pack (MN21B2PK)
Item # : 306232
Model # : MN21B2PK
The Duracell 21/23 12V Alkaline battery is designed to provide reliable power to specialty devices like car alarms, key fobs, GPS trackers, remote controls, and other electronics.
- POWER FOR A WIDE RANGE OF DEVICES: The Duracell 21/23 12 Volt Alkaline battery is designed for use in a variety of compatible devices like car alarms, key fobs, GPS trackers, remote controls, and other electronics.
- LONG-LASTING POWER: Duracell high power 21/23 12V Alkaline batteries were developed to provide reliable performance for your specialty devices.
Price is $9.69
Unit of measure 2/Pack
30-min pickup
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103 reviews
Most helpful positive review
Posted Nov 3, 2025
Reliable, long-lasting battery power that’s worth
The Duracell MN21/23 Alkaline Battery delivers consistent performance and long-lasting durability. I’ve used it in small devices like remotes and key fobs, and it holds power for months without dropping off. The packaging is sturdy and easy to open, protecting the batteries well. It’s compatible with most of my devices and offers great value considering how long each on...
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VS
Most helpful critical review
Posted Oct 31, 2022
It was not expired. but would expire soon. 2nd battery will probably expire before it is needed.
It was not expired. but would expire soon. 2nd battery will probably expire before it is needed. I cannot recommend until I see how long it lasts. I will have to mark something.
sharafiev_1300
Reviewed at:
influenster.com
Posted Nov 3, 2025
Reliable, long-lasting battery power that’s worth
The Duracell MN21/23 Alkaline Battery delivers consistent performance and long-lasting durability. I’ve used it in small devices like remotes and key fobs, and it holds power for months without dropping off. The packaging is sturdy and easy to open, protecting the batteries well. It’s compatible with most of my devices and offers great value considering how long each on...
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thaon113_3822
Reviewed at:
influenster.com
Posted Sep 29, 2025
Durability, value, performance, packaging, compati
Duracell is outstanding for their products, I used many brands before but nothing can beat their performance and they are so value able to me. Their competitive with other brands is absolutely big win. Also, their packaging is on another level, no leak and well sealed.
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ana-mariar70
Reviewed at:
influenster.com
Posted Sep 24, 2025
The best
The product demonstrated excellent performance, providing sustained functionality for my children's toys over an extended period. Very well packaged
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chelseak5823
Reviewed at:
influenster.com
Posted Sep 17, 2025
Durable
While these ones may be a little pricey they tend to always do the job! They always last longer than other battery brands I have used and always work to the best of the ability I need!
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erinh518
Reviewed at:
influenster.com
Posted Sep 16, 2025
Great battry life
Great battry last gor so long had bought a 2 pack for my brothers controller he uses it for about 4 housrs every day thay lasted 6 months very impresed
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parfaitd
Reviewed at:
influenster.com
Posted Sep 6, 2025
You never go wrong with Duracell!
Using a Duracell makes you forget about maintenance, long lasting performance, rigid packaging, works with all appliances. You never go wrong with Duracell!!
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danu4
Reviewed at:
influenster.com
Posted Aug 24, 2025
Great battery
Great product that has powered all of my remotes. Would recommend for anything that requires the mn21/23 battery. The packaging is perfect for this single unit battery.
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tiagos12
Reviewed at:
influenster.com
Posted Aug 19, 2025
these are definitely worth
I bought the MN21/23 alkaline batteries for my garage door opener and they have been working great so far. the power seems strong and consistent. My old battery died pretty quickly, but this one has been holding up well for weeks Its nice not having to stand outside clicking the opener multiple times just to get it to work.
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THOMAS S.
Verified Buyer
Posted Aug 13, 2025
Works just fine as expected
The battery has my fan remote working again.
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philips18_2741
Reviewed at:
influenster.com
Posted Jun 26, 2025
Reliable and long lasting
As always with Duracell you can’t really go wrong, Duracell is always my first choice when buying batteries, they are not the cheapest, but you get what you pay for and in this case, I’m happy to pay a bit extra for the quality of product.
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repair1958_8440
Reviewed at:
influenster.com
Posted Jun 14, 2025
Very good batteries but cost very high
Duracell batteries have always been known for performance, durability, and compatability for same battery size but they have a very high price
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rayans20_566
Reviewed at:
influenster.com
Posted Jun 11, 2025
They are very reliable
I picked up a couple of these Duracell MN21/23 batteries for my garage door remote after the old ones gave out. Honestly, I didn’t think too hard about it—just went with a brand I trust. And so far, I’m glad I did.
Right out of the pack, the remote started working again instantly, and it’s been running strong for months without a hiccup. I use that remote almost every ...
Right out of the pack, the remote started working again instantly, and it’s been running strong for months without a hiccup. I use that remote almost every ...
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L.P.
Verified Buyer
Posted Jun 2, 2025
It came in a gigantic box with a ton of plastic packaging for a little tiny pack of batteries
The battery was fine. You should’ve had it in the store. It came in a gigantic box. It was such a waste.
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MARCELLA M.
Verified Buyer
Posted Mar 4, 2025
Did The Job!
I appreciate that this unusual battery (in my life) was readily available.
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M.G.
Verified Buyer
Posted Mar 2, 2025
Great help and service thank you
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FRANCES B.
Verified Buyer
Posted Jan 24, 2025
Great Availability
Some batteries are hard to find. I am so happy Staples had these rare batteries in stock.
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CHRISTINE B.
Verified Buyer
Posted Aug 17, 2024
The perfect little battery
Customer service was very helpful and helping me to find the right size battery for my remote
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GM D.
Verified Buyer
Posted May 29, 2024
It worked very well; it worked as it was supposed to
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I.L.
Verified Buyer
Posted May 28, 2024
Great battery!
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RAYMOND G.
Verified Buyer
Posted May 13, 2024
after years
After years of putting up with my sister's inoperable garage door opener remote I finally managed to replace the battery (which was missing requiring an Internet hunt.) Now house-sitting I can circumvent the Ring doorbell alerting her on her travels in Europe each time I need to leave and come back. The replacement was ridiculously easy and I am kicking myself for ...
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