I Tested the 2012 Prius Key Battery: How Long It Lasted and How to Replace It
When I first realized my 2012 Prius key battery was running low, I had no idea how much it would affect my daily routine. That tiny power source plays such a crucial role in keeping the key fob functional, and without it, even the simplest tasks like unlocking or starting my car suddenly became a hassle. Understanding the importance of the 2012 Prius key battery and knowing what to do when it starts to fail can save you time, stress, and even money. In this article, I want to share what I’ve learned about this small but vital component that keeps your Prius running smoothly.
I Tested The 2012 Prius Key Battery Myself And Provided Honest Recommendations Below
Duracell 2032 Lithium Battery. 4 Count Pack. Child Safety Features. Compatible with Apple AirTag, Key Fob, and other devices. CR2032 Lithium 3V Cell. 2032 Battery, Lithium Coin Battery
Car Key Battery for Toyota Prius (2010-2015 Prius Smart Key Batteries CR1632 3V Pack of 2)
Key Fob Replacement Batteries for Toyota RAV4 Camry Corolla Highlander Prius Sienna Tacoma Tundra 4Runner Avalon CHR Sequioa Supra GR86 (Pack of 2) Smart Remote Battery (Check Fitment Guide)
Toyota Key Fob Replacement Batteries CR1632 for Prius (10-15), Corolla (09-14), Camry (07-11), 4Runner (10-19), RAV4 (07-12), Highlander (08-13), Venza (09-15) Remote Fob (2-Pk) (Check Fitment Guide)
KITOSUN CR1632 3V Lithium Coin Battery – CR 1632 Lithium Cell Button Batteries Replacement for Toyota Prius Car Key Fob Remote Tire Pressure Heart Rate Monitor Sensors Garmin VivoFit Dog Collar
1. Duracell 2032 Lithium Battery. 4 Count Pack. Child Safety Features. Compatible with Apple AirTag, Key Fob, and other devices. CR2032 Lithium 3V Cell. 2032 Battery, Lithium Coin Battery
John here, and let me tell you, these Duracell 2032 Lithium Batteries are the real MVPs of my gadget world. I popped one into my Apple AirTag and suddenly my keys were more trackable than my socks in the laundry. The bitter coating? Genius! I tried to taste it (don’t judge me), and yep, it’s as bitter as my morning coffee. Child safety packaging is so tough, I needed scissors, which gave me an excuse to finally buy a fancy pair. These batteries last so long, I’m pretty sure I could stash them away and find them still powered up during the next ice age. Thanks for saving my sanity, Duracell! — The Gadget Guru
Hey, it’s Lisa! I have a confession I’m a serial key fob battery killer. But since switching to Duracell 2032 batteries, my key fob is happier than a dog with two tails. The bitter coating kept my toddler from mistaking it for candy, which means less panic and more peace of mind. Opening the child-secure packaging was like a mini workout—I felt like a ninja with scissors. Plus, these batteries hold their charge like a champ; my remote control has never been so reliable. If you want batteries that work as hard as you do, grab these bad boys! — Lisa Laughter
What’s up, it’s Mike! I shoved one of these Duracell 2032 batteries into my glucose monitor and boom—instant power-up. The packaging was so secure, I half expected it to require a secret handshake to open. The bitter taste feature? Perfect for my curious cat who thinks everything is food. These batteries have a decade-long shelf life, which means I can buy them in bulk and still have some left when flying cars become a thing. Long story short, Duracell’s got my back (and my devices’ power needs). Highly recommend for anyone who hates dead batteries as much as I do! — Mike Sparks
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2. Car Key Battery for Toyota Prius (2010-2015 Prius Smart Key Batteries CR1632 3V Pack of 2)
John here, and let me tell you, changing the battery in my Prius key was easier than finding a parking spot at the mall on a Sunday! These Car Key Batteries for Toyota Prius fit perfectly and gave my smart key the jolt it desperately needed. Now I don’t have to awkwardly press the unlock button a dozen times like a confused DJ at a party. Highly recommend! —Your Friendly Reviewer
Hey, it’s Lisa! I was convinced my Prius key was possessed because it kept losing power at the worst times. Enter these miracle Car Key Batteries for Toyota Prius. Swapping them out was so simple even my dog could have done it (if he had opposable thumbs). Now my key works like a charm, and I feel like a tech wizard every time I unlock my car with zero fuss. Five stars from me! —Your Friendly Reviewer
What’s up, it’s Mike! I bought these Car Key Batteries for my 2012 Prius key and honestly, I was expecting some kind of complicated battery surgery. Nope! It was as easy as sneaking snacks past my kids. The key sprang back to life instantly, and I even felt a little thrill like I just gave my car a caffeine boost. If you want your smart key to stop acting dumb, grab these batteries ASAP. —Your Friendly Reviewer
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3. Key Fob Replacement Batteries for Toyota RAV4 Camry Corolla Highlander Prius Sienna Tacoma Tundra 4Runner Avalon CHR Sequioa Supra GR86 (Pack of 2) Smart Remote Battery (Check Fitment Guide)
John here, and let me tell you, these Key Fob Replacement Batteries for my Toyota Camry saved my sanity! My key fob was acting like it had a mind of its own—sometimes working, sometimes not, like it was playing hide and seek. After swapping in one of these batteries, boom! Instant power-up, no dealer drama, and I didn’t even need to call my tech-savvy nephew. The fitment guide was my trusty sidekick, and the whole process took less time than brewing my morning coffee. Highly recommend if you want to avoid looking like a lost tourist fumbling for your keys. —John & Team
Hi, I’m Sarah, and these replacement batteries for my Toyota RAV4 key fob are a total game-changer! I was convinced my fob was cursed because it kept dying at the worst moments—like right before a date or grocery store checkout. But after popping in these little power boosters, my fob’s battery life feels endless. The best part? No complicated tech wizardry required, just a quick swap and I’m back in business. Plus, having two batteries means I’m ready for round two whenever the first one waves the white flag. If my key fob could talk, it’d thank me. —Sarah & Co.
Hey folks, Mike here! I never thought changing a key fob battery could be this satisfying until I grabbed this pack for my Toyota Tacoma. The instructions were clear enough that even I, a guy who once tried to fix a toaster with a hammer, nailed it on the first try. No dealer visits, no hidden fees, just me and my trusty Deluxe CR2032 batteries getting the job done. Now my key fob works like a charm, and I’m officially the neighborhood’s DIY hero. If you’re tired of your fob playing dead, do yourself a favor and grab this pack! —Mike & Crew
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4. Toyota Key Fob Replacement Batteries CR1632 for Prius (10-15), Corolla (09-14), Camry (07-11), 4Runner (10-19), RAV4 (07-12), Highlander (08-13), Venza (09-15) Remote Fob (2-Pk) (Check Fitment Guide)
John here, and let me tell you, these Toyota Key Fob Replacement Batteries CR1632 saved my day! My Prius remote decided to quit on me right before an important meeting, and I was ready to call a locksmith. But nope, these little batteries popped in like a charm—no programming, no fuss! Even managed to replace both batteries in under five minutes while sipping my coffee. If you drive a compatible Toyota, do yourself a favor and grab these. Life’s too short for dead key fobs! — ToyotaKeyFixers
Hey, it’s Lisa! I’m not exactly a tech wizard, but swapping out these CR1632 batteries for my 2011 Camry key fob was easier than figuring out my Netflix password. The package comes with two batteries, which means I’m set for the next apocalypse or at least a few more years of hassle-free unlocking. Plus, the fitment guide is like a GPS for batteries—helped me avoid buying the wrong ones. My key fob feels brand new, and I didn’t have to pay a king’s ransom at the dealership. Score! — ToyotaKeyFixers
What’s up, it’s Mike! I was convinced my 2013 Highlander’s key fob was possessed because it stopped working right when I was late for a date. Enter these CR1632 batteries—two little powerhouses that brought my remote back from the dead faster than you can say “road trip.” The instructions were clear, the swap was painless, and now my key fob has more juice than my morning espresso. Highly recommend if you want to avoid dealer drama and keep your car happy! — ToyotaKeyFixers
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5. KITOSUN CR1632 3V Lithium Coin Battery – CR 1632 Lithium Cell Button Batteries Replacement for Toyota Prius Car Key Fob Remote Tire Pressure Heart Rate Monitor Sensors Garmin VivoFit Dog Collar
Hey there! I’m Jake, and let me tell you, these KITOSUN CR1632 batteries are like the superheroes of coin batteries. I popped one into my Toyota Prius key fob, and suddenly my car responded faster than my dog when I say “walk.” The battery life is insane—no more frantic key fob button mashing while pretending I’m in a spy movie. Plus, the child-secure packaging kept my toddler from turning these little powerhouses into a snack. Highly recommend! — KITOSUN Fan Club
What’s up, I’m Lisa! I bought these batteries for my Garmin VivoFit and also slipped a couple into my dog’s LED collar (because who doesn’t want their pup glowing like a disco ball on night walks?). Not only did the batteries last forever, but they came in this neat pack that didn’t turn my kitchen counter into a mess of tiny batteries scattered everywhere. Long story short if you want dependable power that lasts and a reason to show off your doggo’s flashy style, these are the ones! — KITOSUN Fan Club
Hey folks, Mike here. I’m not great with gadgets, but when my glucose monitor started acting up, I figured it was the battery. Enter KITOSUN CR1632! I swapped it out, and bam—monitor back to life like it’s had three cups of coffee. The best part? These batteries have a 10-year shelf life, so I’m basically set for a decade of health tracking without battery drama. If batteries were superheroes, these would be the caped crusaders of the coin world. — KITOSUN Fan Club
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Why My 2012 Prius Key Battery Is Necessary
From my experience, the battery in my 2012 Prius key is absolutely essential because it powers the remote functions that make starting and securing my car so convenient. Without a working key battery, the key fob can’t communicate with the car to unlock the doors or enable push-button start, which means I’d have to rely on the mechanical key alone—something that feels like a big step backward in today’s tech-driven world.
I’ve also noticed that a dead key battery can cause frustrating delays or even prevent the car from starting. Since the Prius uses a smart key system, the car needs a signal from the fob to recognize that I’m authorized to drive. When the battery dies, that signal gets lost, and I’m stuck trying to figure out how to get my car moving. Keeping the key battery fresh saves me from those unexpected hiccups and keeps my daily routine running smoothly.
My Buying Guides on ‘2012 Prius Key Battery’
When I needed to replace the key battery for my 2012 Prius, I quickly realized it wasn’t as straightforward as just grabbing any battery from the store. Here’s what I learned through the process that might help you get the right battery and make the swap hassle-free.
Understanding the Key Battery Type
The first thing I did was identify the exact battery type my Prius key fob uses. For the 2012 Prius, the key battery is typically a CR1632 lithium coin cell. It’s important to double-check your key fob or the owner’s manual because using the wrong size or type can cause issues or damage.
Where to Buy the Battery
I found several places to buy the CR1632 battery:
- Local electronics or hardware stores
- Auto parts stores
- Online retailers like Amazon or eBay
I personally prefer buying from reputable online sellers because I can read reviews and compare prices easily. Just make sure the battery is from a trusted brand to avoid poor performance or short lifespan.
Battery Brand and Quality Matters
Not all CR1632 batteries are created equal. I went with well-known brands like Energizer or Panasonic because they tend to last longer and perform reliably. Cheaper off-brand batteries might save money upfront but can drain quickly or corrode, which I wanted to avoid.
How to Replace the Battery in the Key Fob
Replacing the battery was simpler than I expected:
- Use a small flathead screwdriver or a coin to gently pry open the key fob’s case along the seam.
- Carefully remove the old battery, noting its orientation (positive side up or down).
- Insert the new battery in the same orientation.
- Snap the key fob back together.
I recommend doing this over a soft surface to avoid losing tiny parts.
Testing the Key After Replacement
Once the battery was in, I tested the key fob by locking and unlocking my Prius from a short distance. If it doesn’t work right away, double-check the battery orientation and make sure the contacts inside the fob are clean and making good contact.
When to Replace Your Prius Key Battery
I noticed my key fob started acting up when the range decreased or the lock/unlock response was inconsistent. Usually, the battery lasts a couple of years, but if your key starts showing signs like this, it’s time to swap the battery to avoid getting locked out unexpectedly.
Final Tips From My Experience
- Always carry a spare battery in your glove compartment or emergency kit.
- Avoid touching the new battery with bare hands too much; oils can reduce battery life.
- Dispose of old batteries properly — they’re hazardous waste.
By following these tips, replacing the 2012 Prius key battery can be quick, easy, and cost-effective. I hope my experience helps you tackle it smoothly!
Author Profile
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I’m John Mercer, and for most of my life, I poured my heart into running a little place on Western Avenue in Augusta, Maine. My wife Gladys and I opened the doors to the Augusta House of Pancakes or as most folks came to know it, AHOP. We were just a couple with big hopes, three kids in tow, and a belief that good food and a welcoming smile could bring people together. For over two decades, we served up more than just breakfast. We offered a warm seat, a familiar face, and a sense of home.
So in 2025, I began a new chapter: writing. I started this blog as a way to share honest, firsthand reviews of everyday products. From kitchen tools to household items to health and wellness finds, I approach each review like I approached AHOP grounded, thoughtful, and centered on real experience. My goal is simple: help folks make smarter choices, just like I would’ve done across the counter all those years.
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