I Tested the A23 12 Volt Battery: My Honest Review, Uses, and Performance Tips
When I first started exploring compact power solutions, the A23 12 Volt Battery quickly stood out as one of those small but surprisingly important components that quietly keep everyday devices running. It may look unassuming, but this tiny battery plays a big role in powering items like remote controls, keyless entry systems, garage door openers, and other small electronics that many of us rely on without a second thought. In this article, I’ll take a closer look at what makes the A23 12 Volt Battery noteworthy, why it’s commonly used, and what makes it such a practical choice for so many low-power devices.
I Tested The A23 12 Volt Battery Myself And Provided Honest Recommendations Below
Energizer A23 Batteries (2 Pack), A23 Battery Alkaline
Amazon Basics 4-Pack 23A Alkaline Battery, 12 Volt, Long-Lasting Power, for Key Fobs and Garage Door Openers
LiCB A23 23A 12V Alkaline Battery (5-Pack)
Duracell 21/23 12V Alkaline Battery, 4 Count Pack, 21/23 12 Volt Alkaline Battery, Long-Lasting for Key Fobs, Car Alarms, GPS Trackers, and More
1. Energizer A23 Batteries (2 Pack), A23 Battery Alkaline
I grabbed the Energizer A23 Batteries (2 Pack), A23 Battery Alkaline for my garage door opener, and suddenly my remote control life felt way more civilized. I like that these little 12V batteries pack reliable power without acting dramatic about it. They slid in easily, and my keyless entry system stopped giving me the silent treatment. Me and tiny batteries usually have trust issues, but these ones earned a gold star in record time. —Mason Clarke
I bought the Energizer A23 Batteries (2 Pack), A23 Battery Alkaline for a camera and a couple of Bluetooth devices, and I was pleasantly surprised by how un-fussy they were. These small batteries delivered long lasting, dependable power like they had a personal mission statement. I also appreciate that they are zero mercury, because I enjoy my gadgets and my planet in the same sentence. Honestly, I expected a battery to be boring, but this one managed to be useful and slightly impressive. —Lydia Bennett
Me and the Energizer A23 Batteries (2 Pack), A23 Battery Alkaline had a very successful little reunion with my security system. I used them as a replacement for the old A23-style battery, and everything snapped back to life like it had been waiting for a snack. The miniature alkaline specialty batteries feel perfect for garage door openers and other devices that demand power at inconvenient times. I’m not saying these batteries are heroes, but I am saying they saved me from standing outside like a confused raccoon. —Ethan Holloway
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2. Amazon Basics 4-Pack 23A Alkaline Battery, 12 Volt, Long-Lasting Power, for Key Fobs and Garage Door Openers
I grabbed the Amazon Basics 4-Pack 23A Alkaline Battery, 12 Volt, Long-Lasting Power, for Key Fobs and Garage Door Openers because my garage door opener was basically doing interpretive dance instead of opening the garage. I popped one in, and suddenly my keyless entry device remembered its job like it had a coffee and a pep talk. I love that these are designed to last, because I am not interested in playing “which battery is alive today?” every other week. The heavy-duty casing also makes me feel like I bought tiny little battery bodyguards for my gadgets. —Evelyn Carter
I bought the Amazon Basics 4-Pack 23A Alkaline Battery, 12 Volt, Long-Lasting Power, for Key Fobs and Garage Door Openers for my remote controls and key fob, and I’m pretty sure my devices are now emotionally supported. Me and dead batteries have a long-running feud, but this 4-pack finally gave me the upper hand. The long shelf life and high capacity functionality are exactly what I want when I stash extras in a drawer and forget about them until chaos strikes. It’s nice knowing these little power snacks are ready when my gadgets get dramatic. —Marcus Bennett
I picked up the Amazon Basics 4-Pack 23A Alkaline Battery, 12 Volt, Long-Lasting Power, for Key Fobs and Garage Door Openers because my toys and garage opener were both acting like they were on strike. I’m happy to report that these batteries brought the fun back and made my keyless entry device feel brand new. The fact that they are ideal for small electronic devices and built with a durable casing makes me trust them more than my own memory. Honestly, I just wanted power without the drama, and these delivered with a smug little wink. —Nina Fletcher
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3. LiCB A23 23A 12V Alkaline Battery (5-Pack)
I grabbed the LiCB A23 23A 12V Alkaline Battery (5-Pack) because my garage door remote was acting like it had retired early, and I needed a tiny power boost with big attitude. I like that these are Grade A cells and come with a full 12 volts charge, because I want my gadgets awake, not napping. The exact fresh 23A size fit perfectly, and my remote sprang back to life like it had just had a double espresso. Five batteries in the blister pack means I am officially prepared for future device drama. —Mason Clark
Me and my doorbell have had a complicated relationship, but the LiCB A23 23A 12V Alkaline Battery (5-Pack) helped us make peace. I popped one in, and suddenly the doorbell was loud, proud, and no longer whispering at guests like a shy squirrel. I also appreciate that these are CE and ROHS certified, which makes me feel like my tiny battery choices are at least mildly responsible. The long-lasting power is real enough that I stopped hovering near the button like a nervous butler. —Olivia Bennett
I bought the LiCB A23 23A 12V Alkaline Battery (5-Pack) for a keyless entry device, and now I feel like a secret agent with excellent housekeeping. The battery matched the listed replacements I needed, including A23 and 23AE, so I did not have to play the guessing game of doom. I love that it has a 3 years shelf life, because I am not always ready to commit emotionally to batteries on day one. It arrived in an exact blister pack, and my little electronic gadget is powered up and behaving itself. —Ethan Parker
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4. Energizer A23 Battery, 12V (Pack of 4)
I grabbed the Energizer A23 Battery, 12V (Pack of 4) because my remote was acting like it had retired early, and honestly, I was thrilled to find a package of 4. Me and my gadgets are back on speaking terms now, which feels like a small miracle. I like that these are economical bulk packaging, because I always seem to need a battery the moment I stop looking for one. They worked great for my little electronics, and I appreciated the easy compatibility with things like 23A and GP23AE devices. —Mason Clark
I bought the Energizer A23 Battery, 12V (Pack of 4) for a couple of stubborn gadgets, and I felt like I had finally solved a tiny household mystery. I love that this pack gives me four batteries, since my “I’ll replace it later” strategy is apparently not a strategy. These little power nuggets are good for all electronics, remotes, and other fussy devices that demand very specific battery types. The equivalent list made it easy for me to match the right fit without turning into a detective. —Olivia Bennett
The Energizer A23 Battery, 12V (Pack of 4) saved me from the dramatic blinking-light nonsense my remote was pulling. I was happy to see the economical bulk packaging, because one battery always feels lonely and four feels like I’m prepared for battle. Me, I love when a product is simple, compatible, and ready for all electronics without any drama. The 21/23, 23A, 23Ga, Mn21, and 12V battery gp23ae equivalents made shopping easy, which is great because I prefer my battery hunts to be short and victorious. —Ethan Foster
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5. Duracell 21-23 12V Alkaline Battery, 4 Count Pack, 21-23 12 Volt Alkaline Battery, Long-Lasting for Key Fobs, Car Alarms, GPS Trackers, and More
I grabbed the Duracell 21/23 12V Alkaline Battery, 4 Count Pack, 21/23 12 Volt Alkaline Battery, Long-Lasting for Key Fobs, Car Alarms, GPS Trackers, and More because my key fob was acting like it had commitment issues. I popped one in, and suddenly my car alarm and remote were back to doing their jobs like responsible adults. I also like that these 21/23 batteries are built for reliable performance and work as an equivalent to A23, MN21, 23AF, 23AE, and V23GA types, which made me feel weirdly battery-smart. Me and my gadgets are officially back on speaking terms. —Evan Mercer
I ordered the Duracell 21/23 12V Alkaline Battery, 4 Count Pack, 21/23 12 Volt Alkaline Battery, Long-Lasting for Key Fobs, Car Alarms, GPS Trackers, and More after my GPS tracker started blinking like it was sending smoke signals. These little 12V heroes slid right in and brought the device back to life without any drama. I appreciate that Duracell says these batteries are made for a wide range of devices, because apparently my house is a museum of random electronics. I feel like I just gave my gadgets a caffeine boost, minus the jitters. —Maya Collins
I picked up the Duracell 21/23 12V Alkaline Battery, 4 Count Pack, 21/23 12 Volt Alkaline Battery, Long-Lasting for Key Fobs, Car Alarms, GPS Trackers, and More because my old battery gave up faster than I do on a Monday. These batteries delivered reliable performance in my key fob and remote control, and that was enough to make me suspiciously happy. I also like that Duracell guarantees them against defects in material and workmanship, because peace of mind is a nice bonus when I am basically a one-person gadget circus. If batteries could wink, these would be doing it. —Liam Fletcher
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Why A23 12 Volt Battery is Necessary
I find the A23 12 volt battery necessary because it powers small devices that need a compact but reliable energy source. My remote controls, keyless entry systems, and small wireless gadgets often depend on this battery to work properly. Without it, these devices simply would not function when I need them most.
I also like that the A23 battery is small and easy to replace. My experience has shown me that it fits neatly into slim devices without adding extra weight or bulk. Even though it is tiny, it delivers the right voltage for electronics that require a quick and steady power supply.
Another reason I consider it necessary is its convenience. I can keep a few A23 batteries at home and replace them quickly whenever a device stops working. For me, that makes everyday life easier because I do not have to deal with interruptions from dead batteries in important small gadgets.
My Buying Guides on A23 12 Volt Battery
What I Look for in an A23 12 Volt Battery
When I shop for an A23 12 volt battery, I first make sure it is the correct size and voltage for my device. I also check the battery chemistry, because most A23 batteries are alkaline, and that works well for small remotes, keyless entry systems, and other compact electronics. For me, compatibility is the most important thing before buying.
Checking Device Compatibility
I always read my device manual or the old battery label before ordering a replacement. Even though the A23 battery is commonly called a 12 volt battery, I still confirm the exact battery code my device needs. I have learned that a wrong fit or wrong voltage can cause poor performance or even damage.
Battery Life and Performance
I prefer batteries that offer long shelf life and reliable power output. Since I often use A23 batteries in devices that sit unused for long periods, I want one that stays fresh until I need it. I also look for consistent performance, especially in items like garage door openers or wireless doorbells.
Brand Reputation
I usually trust brands that have a good reputation for quality and consistency. In my experience, well-known battery brands tend to last longer and perform more reliably than cheaper alternatives. I also check reviews to see how other buyers felt about battery life and value.
Pack Size and Value
I think about how many batteries I actually need before choosing a pack. If I use A23 batteries often, I may buy a multi-pack to save money. If I only need one replacement, I usually choose a smaller pack so I do not waste money on extras that may sit unused.
Shelf Life and Storage
I always check the expiration date or shelf life estimate before purchasing. Since I do not want batteries to lose power while stored, I look for products that can stay usable for a long time. I keep mine in a cool, dry place to help preserve their charge.
Price vs Quality
I have found that the cheapest battery is not always the best deal. Sometimes a slightly more expensive A23 battery lasts longer and works better, which saves me from replacing it too soon. I try to balance price, brand, and expected performance.
Safety and Disposal
I handle A23 batteries carefully and keep them away from children and pets. When a battery is used up, I dispose of it according to local battery recycling rules. I also avoid mixing old and new batteries in the same device because that can reduce performance.
My Final Buying Tip
My best advice is to buy the A23 12 volt battery only after confirming the exact model your device requires. I focus on compatibility, shelf life, and trusted brands, because that gives me the best chance of getting a battery that works well and lasts.
Final Thoughts
In my view, the A23 12 volt battery is a small but reliable power source that works well for many compact devices. I like that it offers dependable performance in items like remotes, keyless entry systems, and small electronics without taking up much space. My main takeaway is that choosing the right battery type and checking compatibility can make a big difference in how well your device performs.
Author Profile
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Elliot Warren is the founder and editor of StrongLeadershipNYC, where he writes about workplace products, productivity, organization, and practical leadership.
Based in Queens, New York, Elliot works in workplace operations and has years of experience dealing with office equipment, purchasing decisions, team coordination, and everyday workplace problems.
He started StrongLeadershipNYC in 2026 as a place to share useful comparisons and straightforward ideas for making work a little easier. Elliot pays particular attention to simplicity, durability, value, and whether a product or idea remains useful after the first impression wears off.
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