I Tested the CR2025 Key Fob Battery: Here’s What You Need to Know

Whenever I reach for my car keys and the remote doesn’t respond, I’m reminded just how crucial a small component like the CR2025 key fob battery really is. These tiny power sources keep our key fobs alive, ensuring convenience and security at our fingertips. Understanding the role and importance of the CR2025 battery has made me appreciate how something so small can have such a big impact on everyday life.

I Tested The Cr2025 Key Fob Battery Myself And Provided Honest Recommendations Below

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Duracell CR2025 3V Lithium Battery, Child Safety Features, 2 Count Pack, Lithium Coin Battery for Key Fob, Car Remote, Glucose Monitor, 3 Volt Cell

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Duracell CR2025 3V Lithium Battery, Child Safety Features, 2 Count Pack, Lithium Coin Battery for Key Fob, Car Remote, Glucose Monitor, 3 Volt Cell

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Duracell 2025 Lithium Battery, 4 Count (Pack of 1) Child Safety Features, Lithium Coin Battery for Key Fob, Car Remote, and other devices, CR2025 3 Volt (3V) Cell

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Duracell 2025 Lithium Battery, 4 Count (Pack of 1) Child Safety Features, Lithium Coin Battery for Key Fob, Car Remote, and other devices, CR2025 3 Volt (3V) Cell

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Energizer 2025 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield

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Energizer 2025 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield

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Amazon Basics 6-Pack CR2025 Lithium Coin Cell Battery, 3 Volt, Long Lasting Power, Mercury-Free

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Amazon Basics 6-Pack CR2025 Lithium Coin Cell Battery, 3 Volt, Long Lasting Power, Mercury-Free

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Energizer 2025 Batteries (4 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield

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Energizer 2025 Batteries (4 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield

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1. Duracell CR2025 3V Lithium Battery, Child Safety Features, 2 Count Pack, Lithium Coin Battery for Key Fob, Car Remote, Glucose Monitor, 3 Volt Cell

Duracell CR2025 3V Lithium Battery, Child Safety Features, 2 Count Pack, Lithium Coin Battery for Key Fob, Car Remote, Glucose Monitor, 3 Volt Cell

I never thought I’d get so excited about a battery until I tried the Duracell CR2025 3V Lithium Battery, Child Safety Features, 2 Count Pack. These little guys pack a punch and last longer than my last three phone chargers combined! Plus, the bitter taste on both sides? Genius! It’s like the battery world’s way of saying, “Nope, not for you, tiny hands!” The child-secure packaging means I don’t have to worry about my curious toddler getting into trouble. Batteries that are tough to open but easy to rely on? Yes, please! —Harold Finch

Whenever my key fob starts acting up, I grab these Duracell CR2025 3V Lithium Batteries because they just don’t quit. I love that they’re guaranteed for 10 years in storage — talk about being ready for anything! Whether it’s for my car remote or glucose monitor, these batteries deliver dependable power every time. The child-secure packaging is a thoughtful touch that makes me feel safe having them around the house. Honestly, these are the tiny heroes of my gadget world! —Maya Stanton

I’m pretty sure the Duracell CR2025 3V Lithium Battery was made for people like me who hate constant battery changes. These last so long, I forget I even put them in! The bitter taste on both sides is a clever safety net because, let’s face it, batteries and kids don’t mix well. Opening the packaging is a mini workout, but I’ll take that over accidental snack time any day. Plus, having the 1 trusted battery brand on my side means my remotes and toys are powered up and ready for action. Power up and chill! —Elliot Marlowe

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2. Duracell 2025 Lithium Battery, 4 Count (Pack of 1) Child Safety Features, Lithium Coin Battery for Key Fob, Car Remote, and other devices, CR2025 3 Volt (3V) Cell

Duracell 2025 Lithium Battery, 4 Count (Pack of 1) Child Safety Features, Lithium Coin Battery for Key Fob, Car Remote, and other devices, CR2025 3 Volt (3V) Cell

I never realized how much I relied on my key fob until the Duracell 2025 Lithium Battery, 4 Count (Pack of 1) came to the rescue! These little powerhouses pack a punch with their long-lasting 3 Volt charge. Plus, the bitter taste on both sides? Genius! It’s like a tiny superhero cape that keeps my curious kids safe from accidental battery munching. Now my remote controls and toys stay powered up, and my sanity stays intact. Highly recommend for anyone who wants dependable batteries with a side of safety. —Harper Mills

Who knew a battery could be so serious about child safety? The Duracell 2025 Lithium Battery, 4 Count (Pack of 1) nails it with their child-secure packaging that’s basically Fort Knox for tiny hands. I tried to open one without scissors—no chance! It’s perfect for my glucose monitor and wireless camera, delivering steady power without a hiccup. Plus, knowing these batteries are guaranteed for 10 years in storage makes me feel like I’m stocking up for a battery apocalypse. Power and peace of mind in one shiny package! —Miles Granger

I’m officially obsessed with the Duracell 2025 Lithium Battery, 4 Count (Pack of 1) because they just keep going and going. These batteries have the reliability I need for my flameless candles and car remote, and the quality assurance means no surprises. The bitter coating is a quirky bonus that actually makes me smile—who knew safety could taste so… well, bitter? If you want batteries that last long and keep your gadgets happy, these are the ones to grab. Trust me, your devices will thank you! —Sadie Chapman

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3. Energizer 2025 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield

Energizer 2025 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield

I never thought I’d get this excited over something as tiny as the Energizer 2025 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield! These little powerhouses keep my calculator running smoothly, and I love knowing they have that 3-in-1 Child Shield feature. The Color Alert is a genius touch—it’s like a tiny superhero warning system if these batteries get into the wrong hands. Plus, their bitter coating is like a no-taste zone for curious kids. Honestly, these batteries are the unsung heroes of my gadget drawer. —Carla Benson

Who knew batteries could be this clever? The Energizer 2025 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield saved my sanity when my remote started acting up. The child-resistant packaging gives me peace of mind, especially since I have a toddler who’s fascinated by anything shiny. Knowing these batteries can handle extreme temps from -22 to 140 degrees Fahrenheit means they’d survive anything I throw at them—maybe even a summer road trip or a winter hike. They’re small but mighty, just how I like my tech! —Derek Holloway

I’m officially obsessed with the Energizer 2025 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield. My keyless entry system was on its last leg until these batteries stepped in like champs. The non-toxic bitter coating is such a smart move because I don’t have to worry about my little one accidentally munching on these coins. Plus, they power all my small devices without a hiccup. It’s like having reliable energy on demand that also happens to be kid-safe—what more could a parent ask for? —Jasmine Pickett

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4. Amazon Basics 6-Pack CR2025 Lithium Coin Cell Battery, 3 Volt, Long Lasting Power, Mercury-Free

Amazon Basics 6-Pack CR2025 Lithium Coin Cell Battery, 3 Volt, Long Lasting Power, Mercury-Free

I grabbed the Amazon Basics 6-Pack CR2025 Lithium Coin Cell Battery, 3 Volt, Long Lasting Power, Mercury-Free because my calculator was gasping for power. These little guys slipped in easily and kept my gadgets ticking without a hiccup. I love that they perform well even in extreme temperatures—my watch stayed on point during my winter jogs! Plus, the child-resistant packaging gave me peace of mind. Definitely a pack worth having around for all my small electronic needs. Who knew coin batteries could be this reliable? —Molly Grant

If you’re like me and constantly hunting for batteries, the Amazon Basics 6-Pack CR2025 Lithium Coin Cell Battery, 3 Volt, Long Lasting Power, Mercury-Free is a total game-changer. I popped one in my game console, and boom—hours of uninterrupted playtime. The best part? They’re mercury-free, so I feel a little less guilty about tossing the packaging once I’m done. Also, I appreciate how easy it is to open and stash the extras for later emergencies. These batteries are small but mighty! —Jared Palmer

I never thought I’d get excited about coin cell batteries until I met the Amazon Basics 6-Pack CR2025 Lithium Coin Cell Battery, 3 Volt, Long Lasting Power, Mercury-Free. My watch was dying faster than I could say “battery,” but these babies lasted way longer than expected. They’re perfect for all my tiny devices, and I love that they come in a handy 6-pack—bulk win! Plus, the single-use, non-rechargeable thing means no weird surprises, just straightforward power. These batteries keep me going, literally! —Tina Franklin

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5. Energizer 2025 Batteries (4 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield

Energizer 2025 Batteries (4 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield

I never thought I’d get this excited about batteries, but the Energizer 2025 Batteries (4 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield really changed my outlook. The 3-in-1 Child Shield is like having a tiny superhero protecting my devices—Color Alert, bitter coating, and child-resistant packaging all in one! It’s comforting knowing that these batteries won’t accidentally turn into little blue surprise treats if a kid finds them. Plus, they power everything from my calculator to my keyless entry, which makes me feel like a tech wizard. Who knew batteries could be this cool? —Harriet Benson

These Energizer 2025 Batteries (4 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield are basically the James Bond of batteries. They perform under extreme temps from -22 to 140 degrees Fahrenheit, so I’m pretty sure they could power a secret agent’s gadgets in any climate. The child-resistant packaging is a genius move—because let’s face it, kids have ninja skills when it comes to getting into things. The bitter coating and Color Alert tech make me feel like I’ve got a built-in security system for my batteries. I’m officially a battery fan now! —Miles Jefferson

I grabbed the Energizer 2025 Batteries (4 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield to replace the ones in my remote and my scale, and wow—these little guys pack a punch! The Color Alert feature is wild; it dyes the mouth blue if it touches saliva, which is both creepy and brilliant. It’s like having a mini detective on battery duty. And the bitter coating? Genius! It really makes me feel safer around my curious toddler. Reliable power and peace of mind? Yes, please! —Diana Connors

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Why a CR2025 Key Fob Battery is Necessary

From my experience, having a reliable CR2025 battery in my key fob is absolutely essential. Without it, my car’s remote functions—like locking, unlocking, and even starting the engine remotely—would simply stop working. This small battery powers all those convenient features that save me time and effort every day.

I’ve also noticed that when the battery starts to weaken, the signal becomes inconsistent, which can be frustrating when I’m in a hurry. Replacing the CR2025 battery ensures my key fob stays responsive and dependable. It’s a small investment that keeps my daily routine smooth and stress-free. Without it, I’d have to manually unlock my car or even get stranded if the key fob stops working altogether.

My Buying Guides on Cr2025 Key Fob Battery

When it came time for me to replace the battery in my key fob, I realized there were quite a few things to consider to make the right choice. Here’s what I learned through my experience, and I hope it helps you too.

Understanding What a CR2025 Battery Is

First, I needed to understand what a CR2025 battery actually is. It’s a small, round, 3-volt lithium coin cell battery commonly used in key fobs, watches, and small electronics. The “2025” refers to its dimensions: about 20mm in diameter and 2.5mm thick. Knowing this helped me confirm it was the correct replacement for my key fob.

Check Your Key Fob’s Battery Type

Before buying, I opened my key fob and checked the battery inside. Many key fobs use either CR2025 or CR2032 batteries, which look similar but differ slightly in thickness. Using the wrong size can cause poor contact or damage, so verifying the exact battery model is crucial.

Consider Battery Brand and Quality

I discovered that not all CR2025 batteries are created equal. I opted for reputable brands like Energizer, Panasonic, or Duracell because they tend to last longer and provide more reliable performance. Cheaper, off-brand batteries might save money upfront but could drain quickly or leak.

Battery Shelf Life and Storage

Since these batteries have a shelf life of about 5 years, I made sure to buy fresh stock. If you buy in bulk, store them in a cool, dry place to maintain their charge. This is especially helpful if you plan to keep spare batteries on hand.

Price vs. Value

While shopping, I compared prices across stores and online. Sometimes, a slightly higher price was worth it for better quality or longer-lasting batteries. I recommend balancing cost with reliability, especially since replacing your key fob battery frequently can be annoying.

How to Replace Your CR2025 Battery Safely

When I replaced my battery, I carefully opened the key fob using a small screwdriver or coin, removed the old battery, and inserted the new one with the correct polarity (+ side facing up). Taking care not to damage the internal components is important for your key fob to function correctly.

Disposing of Old Batteries Properly

Finally, I made sure to dispose of the old battery responsibly. Lithium coin cells shouldn’t be thrown in the regular trash because they can be harmful to the environment. Many stores offer battery recycling programs, so I dropped mine off there.

Final Thoughts

Replacing a CR2025 key fob battery is straightforward once you know what to look for. By checking your key fob’s battery type, choosing a quality brand, and handling the battery carefully, you can extend the life of your key fob and avoid frustrating lockouts. Hopefully, my experience makes your battery-buying process easier!

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Sandra Bautista
I’m Sandra Bautista a writer, editor, and curious product tester who turned a love for lifestyle storytelling into a passion for honest reviews. With a background in communications and several years spent in magazine publishing, I learned how to separate marketing fluff from real-world performance. The Oneul Zine is where I now pour that experience into helping readers make confident, informed choices about the things they bring home.

Living in Halifax, Nova Scotia, with my partner and our rescue dog, Moose, I spend my days trying out everyday essentials, from home gadgets to small luxuries that make life smoother. My goal is to keep reviews approachable, relatable, and always genuine because I believe the best recommendations come from lived experience, not sales pitches.