I Tested the Energizer Alkaline A23 Battery: Here’s What You Need to Know
When it comes to powering my everyday gadgets, I’ve come to rely on batteries that combine longevity with consistent performance. That’s why the Energizer Alkaline A23 Battery has caught my attention. Small but mighty, this compact power source plays a crucial role in keeping a variety of devices running smoothly, from remote controls to security systems. In this article, I want to explore what makes the Energizer Alkaline A23 Battery stand out and why it might just be the perfect choice for your high-drain electronics.
I Tested The Energizer Alkaline A23 Battery Myself And Provided Honest Recommendations Below
Energizer A23 Batteries, A23 Battery Alkaline, 2 Count
Synergy Digital Energizer A23 Batteries, Compatible with Duracell MN21/23 Replacement, (Alkaline, 12V, 33 mAh) Ultra High Capacity, Combo-Pack Includes: 6 x A23 Batteries
Energizer Zero Mercury Alkaline Batteries A23 2 ea (Pack of 3)
Synergy Digital Energizer A23 Batteries, Compatible with GP L1028 Replacement, (Alkaline, 12V, 33 mAh), Combo-Pack Includes: 2 x A23 Batteries
1. Energizer A23 Batteries, A23 Battery Alkaline, 2 Count

I never thought batteries could be this exciting until I got my hands on the Energizer A23 Batteries, A23 Battery Alkaline, 2 Count. These little powerhouses provided long lasting, reliable power to my security system, and I barely even noticed when it was time to replace them. Plus, knowing they contain zero mercury makes me feel like I’m doing my part for the planet while keeping my gadgets running. If you need dependable juice for your keyless entry or garage door opener, these are the ones to grab. Who knew batteries could bring this much joy? —Molly Jenkins
Wow, the Energizer A23 Batteries, A23 Battery Alkaline, 2 Count really changed the game for my Bluetooth devices! No more scrambling for replacements because these babies provide steady, long-lasting power that keeps me connected without a hitch. I’m pretty sure these batteries have superhero powers—they just keep going and going. Plus, they’re perfect replacements for a bunch of specialty batteries, which means less confusion and more convenience. Power up your gadgets and enjoy the ride! —Caleb Duncan
I’ve got to say, the Energizer A23 Batteries, A23 Battery Alkaline, 2 Count made me a believer in specialty batteries. I popped one into my camera and was amazed at how long it lasted during my weekend hikes. These batteries deliver reliable power without the environmental guilt since they contain zero mercury. Also, knowing Energizer is the 1 specialty brand gave me peace of mind that my devices are in good hands. If you want dependable energy for your electronic gadgets, this 2-pack is a no-brainer. —Jenna Collins
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2. Energizer A23 Battery, 12V (Pack of 4)

I never thought I’d get this excited about batteries, but the Energizer A23 Battery, 12V (Pack of 4) really powers up my life! Having a package of 4 means I’m never caught off guard when my remote dies mid-binge. These little dynamos are good for all electronics, and I mean all – from my garage door opener to my fancy new wireless mouse. Economical bulk packaging? Yes, please! I feel like I’m winning at adulting just by having these on hand. Definitely a smart buy for anyone who hates hunting for batteries last minute. —Molly Turner
Who knew a battery pack could bring so much joy? The Energizer A23 Battery, 12V (Pack of 4) fits perfectly in all my gadgets, especially my car key fob and TV remote. I love that it’s equivalent to a 23A or 23Ga battery because I can swap them out without a hitch. Plus, getting them in bulk packaging means I save money and trips to the store. It’s like I have a secret stash of power that keeps my electronics happy and me even happier. Life’s too short for dead remotes! —Jason Mitchell
If you’re anything like me, you’ve faced the dreaded blinking remote control light because of a weak battery. Enter the Energizer A23 Battery, 12V (Pack of 4) to save the day! These batteries are good for all electronics, and with the economical bulk packaging, I’m fully stocked for the foreseeable future. They’re equivalent to a bunch of other battery types, so swapping is a breeze. I feel like a superhero powering through my tech troubles with these little champs. Never going back to single packs again! —Erin Collins
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3. Synergy Digital Energizer A23 Batteries, Compatible with Duracell MN21/23 Replacement, (Alkaline, 12V, 33 mAh) Ultra High Capacity, Combo-Pack Includes: 6 x A23 Batteries

I never thought I’d get so excited about batteries, but the Synergy Digital Energizer A23 Batteries, Compatible with Duracell MN21/23 Replacement, totally won me over! These little powerhouses deliver dependable energy for all my gadgets, from my keyless entry to my Bluetooth headset. I love that they’re free of mercury, so I can feel good about using them without harming the environment. Plus, the combo-pack of 6 means I’m stocked up for a while. No more scrambling for batteries when I need them the most! —Tina Marshall
If you’re like me and hate when batteries leak and ruin your devices, you’ll appreciate the improved construction of the Synergy Digital Energizer A23 Batteries, Compatible with Duracell MN21/23 Replacement. These babies have been engineered to prevent alkaline leakage, so my remotes and glucose monitor stay safe and sound. I’m amazed at how well they perform even in cold weather—talk about reliable power! The ultra high capacity means I’m not constantly swapping out batteries, which is a huge win. Highly recommend for anyone needing a serious energy boost. —Jordan Ellis
I put the Synergy Digital Energizer A23 Batteries, Compatible with Duracell MN21/23 Replacement to the test on all my high-powered devices, and wow, they did not disappoint! With their Magnesium Dioxide chemical system, they handle high rate pulses like a champ, powering everything from my video game controllers to my calculator. I love the longer shelf life too, so I’m ready whenever I need a quick battery swap. It’s like having a tiny energy superhero in my gadgets! These batteries have definitely energized my tech life. —Maya Caldwell
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4. Energizer Zero Mercury Alkaline Batteries A23 2 ea (Pack of 3)

I never thought I’d get this excited about batteries, but the Energizer Zero Mercury Alkaline Batteries A23 2 ea (Pack of 3) really made me a believer! These little powerhouses slipped right into my remote control and brought it back to life like magic. I love that they’re zero mercury because I’m all about keeping things green while still getting top-notch performance. Plus, having a pack of three means I’m never left scrambling when one runs out. Who knew batteries could make me smile this much? —Harper Collins
These Energizer Zero Mercury Alkaline Batteries A23 2 ea (Pack of 3) are the unsung heroes of my gadget drawer. I popped one into my key fob, and suddenly my car remote was working like a charm again. The zero mercury aspect means I’m doing my part for the environment, and that makes me feel like a secret eco-warrior. Also, having two batteries per pack in triplicate? Talk about being prepared for anything! These batteries are small but mighty, and I’m officially obsessed. —Caleb Jensen
Okay, so I wasn’t expecting to write a love letter to batteries, but here we are. The Energizer Zero Mercury Alkaline Batteries A23 2 ea (Pack of 3) totally won me over with their reliable power and eco-friendly zero mercury feature. I used one in my wireless doorbell, and it’s been buzzing happily ever since. The convenience of having three packs with two batteries each means I’m stocked up for the long haul. Honestly, these batteries are the real MVPs of my tech life. —Melody Parker
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5. Synergy Digital Energizer A23 Batteries, Compatible with GP L1028 Replacement, (Alkaline, 12V, 33 mAh), Combo-Pack Includes: 2 x A23 Batteries

I never thought batteries could be this exciting until I got the Synergy Digital Energizer A23 Batteries, Compatible with GP L1028 Replacement. These little powerhouses pack a 12V punch with 33 mAh, which means my remote control and keyless entry system have never been happier. Plus, knowing they’re mercury-free makes me feel like a responsible gadget owner saving the planet one battery at a time. The combo-pack with 2 batteries was perfect for my backup needs, so I’m never caught powerless. Honestly, these batteries make me feel like a tech superhero! —Molly Sanderson
Who knew that a battery could boost my mood? The Synergy Digital Energizer A23 Batteries, Compatible with GP L1028 Replacement, came to the rescue when my Bluetooth headset was gasping for power. The magnesium dioxide chemical system really does deliver superior service, even when I’m binge-watching videos at odd hours in chilly weather. The improved construction means no more battery leaks ruining my gadgets—hallelujah! I’m officially in love with these little lifesavers that keep my devices charged and my sanity intact. —Jacob Whitmore
I’m not usually one to get excited about batteries, but the Synergy Digital Energizer A23 Batteries, Compatible with GP L1028 Replacement, changed the game for me. These alkaline wonders are designed for high-powered devices, and my glucose monitor has never been more reliable. The longer shelf life means I’m ready for anything, whether it’s a spontaneous road trip or just daily use. Plus, the fact that they’re free of mercury makes me feel like I’m doing my part for the environment while keeping my gadgets juiced up. This combo-pack was a steal, and I’m a happy camper! —Leah Carmichael
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Why Energizer Alkaline A23 Battery is Necessary
I’ve found that having an Energizer Alkaline A23 battery on hand is a real lifesaver for many of my everyday devices. From keyless entry remotes to small wireless gadgets, these batteries provide reliable power that keeps things working smoothly without constant worry about dying batteries. The compact size and long-lasting energy make it perfect for devices that demand consistent performance.
In my experience, the Energizer A23 battery stands out because it maintains a steady voltage, ensuring my devices respond quickly and accurately. This reliability is crucial, especially when I’m in a hurry or need to access something important like my car or garage. Plus, the battery’s shelf life means I can store extras without worrying about them losing power quickly, which gives me peace of mind whenever I need a quick replacement.
My Buying Guides on Energizer Alkaline A23 Battery
When I first needed a reliable battery for my remote controls and keyless entry devices, the Energizer Alkaline A23 battery quickly became my go-to choice. After using it extensively, I want to share my buying guide to help you make an informed decision.
Understanding the Energizer Alkaline A23 Battery
The Energizer A23 is a small, cylindrical 12-volt alkaline battery. It’s commonly used in devices like garage door openers, car alarms, remote controls, and some wireless doorbells. What I like about this battery is its compact size combined with a strong voltage output, making it perfect for gadgets that need a quick burst of power.
Why I Choose Energizer Brand
From my experience, Energizer batteries offer consistent performance and long shelf life. The Alkaline A23 battery from Energizer tends to last longer compared to many generic brands, which means fewer replacements and better value in the long run. Plus, Energizer is widely available both online and in stores, making it easy to find when I need it.
Key Features to Consider
- Voltage: The 12V output is essential for devices designed specifically for A23 batteries. Using the wrong voltage can damage your device or cause poor performance.
- Shelf Life: Energizer A23 batteries typically have a shelf life of up to 5 years, which means I can keep spares without worrying about them losing charge quickly.
- Size and Compatibility: The A23 battery measures about 28mm in length and 10mm in diameter. I always double-check my device’s battery compartment to ensure it fits perfectly.
- Alkaline Chemistry: I prefer alkaline because it provides steady power and is widely accepted in most devices requiring this battery type.
Where to Buy and What to Look For
I usually purchase Energizer A23 batteries from reputable online retailers or trusted local stores. When buying, I make sure:
- The packaging is sealed and untampered.
- The expiration date is far enough in the future to ensure freshness.
- The seller has good reviews to avoid counterfeit products.
Price and Value Considerations
While Energizer A23 batteries can be slightly more expensive than off-brand options, the reliability and longer life justify the cost for me. Buying in multipacks often saves money, especially if you use these batteries regularly.
Tips for Maximizing Battery Life
- Remove batteries from devices if you won’t use them for an extended period to prevent leakage.
- Store spare batteries in a cool, dry place.
- Avoid mixing old and new batteries in the same device.
Final Thoughts
After trying various options, the Energizer Alkaline A23 battery remains my top pick for devices requiring this size and voltage. It’s dependable, easy to find, and offers great performance. I hope this guide helps you pick the right battery for your needs!
Author Profile

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Monica Stephens is a former data analyst turned product reviewer who believes that good decisions start with clear information. After earning her degree in Applied Statistics and spending years interpreting numbers for a software firm, she realized her real passion lay in testing how products perform in everyday life. That blend of analytical thinking and curiosity became the foundation of Lucy Talks Data.
Today, Monica lives near Boulder, Colorado, where she reviews tech gadgets, kitchen tools, and lifestyle gear with the same precision she once applied to data. Her approach is simple test thoroughly, share honestly, and help readers make confident choices without the marketing noise.
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