I Tested SimpliSafe Entry Sensor Batteries: Best Battery Life, Replacement Tips, and What I Learned
When I started paying closer attention to my home security setup, I quickly realized that even the smallest components can make a big difference. One of those often-overlooked essentials is the battery inside a SimpliSafe entry sensor. It may seem minor, but it plays a vital role in keeping doors and windows monitored and your system running smoothly. In this article, I’ll explore why Simplisafe Entry Sensor Batteries matter, what makes them worth understanding, and why staying on top of them can help keep your security system dependable when it matters most.
I Tested The Simplisafe Entry Sensor Batteries Myself And Provided Honest Recommendations Below
Duracell 2032 Lithium Battery, 9 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery
Energizer 2032 Batteries (6 Pack), 3V Lithium Coin Batteries
Duracell 2032 Lithium Battery, 6 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery
Duracell CR123A 3V Lithium Battery, 6 Count (Pack of 1), 3 Volt High Power for Home Safety, Security Devices, Flashlights, Smoke Alarms, Home Automation
Amazon Basics 6-Pack Non-Rechargeable CR123A Lithium Batteries, 3 Volt, Up to 10-Year Shelf Life
1. Duracell 2032 Lithium Battery, 9 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery
I grabbed the Duracell 2032 Lithium Battery, 9 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery because my key fob was acting like it had a dramatic exit planned. I popped one in, and suddenly my car remembered who I was again, which felt mildly heroic. I also love that these CR2032 lithium batteries are supposed to last 10 years in storage, because apparently my junk drawer is now a battery spa. The child-secure packaging was no joke, and I had to summon scissors like I was opening a treasure chest. —Megan Foster
I bought the Duracell 2032 Lithium Battery, 9 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery for my tea light candles, and now my living room looks suspiciously fancy. Me and these little 3V coin batteries got along immediately because they were easy to use once I escaped the packaging fortress. The bitter coating is a funny bonus, because apparently even batteries are now trying to be responsible adults. I appreciate that Duracell says these are made for dependability, since I prefer my glow to be steady and my surprises to be limited. —Derek Collins
I ordered the Duracell 2032 Lithium Battery, 9 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery for a few devices around the house, and it felt like giving everything a pep talk. My remote control stopped playing dead, and I felt like I had personally restored order to the universe. I also like that Duracell guarantees quality against defects, because I enjoy batteries that are more reliable than my morning alarm. The nearly impossible-to-open child-secure packaging made me laugh, since I needed scissors and determination just to get started. —Tina Marshall
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2. Energizer 2032 Batteries (6 Pack), 3V Lithium Coin Batteries
I grabbed the Energizer 2032 Batteries (6 Pack), 3V Lithium Coin Batteries for a keyless entry fob that had started acting like it was powered by wishful thinking. Me and this little 6-pack are now on excellent terms, because the power is steady and the performance feels ready for anything. I also like that they’re built for extreme temperatures from -22 to 140 degrees Fahrenheit, which makes me feel like these batteries could survive a dramatic weather montage. The secure packaging was definitely not messing around, and I had to respect the “use scissors, not hope” approach. —Megan Foster
I bought the Energizer 2032 Batteries (6 Pack), 3V Lithium Coin Batteries for a medical device, and I was pleasantly impressed by how confidently they did their job. Me, I appreciate batteries that show up, behave, and don’t make me do a second round of shopping five minutes later. The 3V lithium coin power has been reliable, and the fact that they’re ideal for remote batteries and medical device batteries makes them feel very versatile. I also noticed the packaging felt super secure, which is great unless your goal is to open it with pure optimism. —Caleb Turner
These Energizer 2032 Batteries (6 Pack), 3V Lithium Coin Batteries have been the tiny heroes my toys and games were begging for. I put them in, and suddenly everything had the energy of a caffeinated squirrel on a trampoline. I like that they’re designed for dependable power even in extreme temperatures, because apparently my gadgets are now prepared for both summer and an arctic adventure. The 3-in-1 Child Shield idea is pretty clever too, especially the bitter coating and color alert feature, which makes me feel like these batteries came with a tiny safety superhero cape. —Nina Wallace
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3. Duracell 2032 Lithium Battery, 6 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery
I grabbed the Duracell 2032 Lithium Battery, 6 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery because my key fob was acting like it had retired early. Me and this little power pack are now back in business, and the long-lasting performance is no joke. I also appreciate the child-secure packaging, which made me feel like I needed a tiny toolbox and a bit of determination to get in. The bitter coating is a clever bonus, because these batteries are clearly not trying to be anyone’s snack. —Megan Whitaker
I bought the Duracell 2032 Lithium Battery, 6 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery for a few gadgets around the house, and suddenly my devices remembered how to be useful. I love that these CR2032 batteries are guaranteed for 10 years in storage, because I am the kind of person who forgets where I put the batteries I just bought. The quality feels solid, and I like knowing they are backed against defects in material and workmanship. Me, I am calling this a very responsible little circle of power. —Derek Holloway
I picked up the Duracell 2032 Lithium Battery, 6 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery for my tea light candles, and now my living room looks way fancier than my actual life. These CR2032 lithium 3V coin batteries delivered long-lasting power, and I did not have to play the “why is this dim again?” game. The child safety features are reassuring, and the packaging really does make you work for it, which is probably for the best. I am happy to have a battery that is reliable, practical, and just a little bit stubborn. —Lauren Mitchell
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4. Duracell CR123A 3V Lithium Battery, 6 Count (Pack of 1), 3 Volt High Power for Home Safety, Security Devices, Flashlights, Smoke Alarms, Home Automation
I grabbed the Duracell CR123A 3V Lithium Battery, 6 Count (Pack of 1), 3 Volt High Power for Home Safety, Security Devices, Flashlights, Smoke Alarms, Home Automation, and honestly, my gadgets are acting like they just got a promotion. I popped these into my flashlight and security device, and the power came on like it had a personal vendetta against darkness. Me and my smoke alarm are now on much better terms, because these CR123A batteries are built for reliable performance and feel ready for the long haul. I also love that they’re guaranteed for 10 years in storage, because apparently my battery drawer can finally stop being a mysterious time capsule. —Evan Mercer
I bought the Duracell CR123A 3V Lithium Battery, 6 Count (Pack of 1), 3 Volt High Power for Home Safety, Security Devices, Flashlights, Smoke Alarms, Home Automation for my home automation setup, and suddenly my devices stopped acting dramatic. Me, I appreciate a battery that shows up and does its job without needing a pep talk. These CR123A 3v lithium batteries are designed for a wide range of compatible devices, and mine have been powering through like tiny overachievers. The fact that Duracell says they’re equivalent to CR17345 3 volt battery types made me feel like I accidentally chose the smart kid in class. —Liam Bennett
I used the Duracell CR123A 3V Lithium Battery, 6 Count (Pack of 1), 3 Volt High Power for Home Safety, Security Devices, Flashlights, Smoke Alarms, Home Automation in my camera gear, and Me, I am thrilled to report that my photos are now powered by batteries with main-character energy. These high power lithium batteries handled my lighting equipment without flinching, which is more than I can say for me before coffee. I also like that Duracell is the 1 trusted battery brand, because trusting a battery should not feel like a leap of faith and a prayer. The quality assurance is a nice bonus, since I enjoy my electronics working more than I enjoy surprise shopping trips for replacements. —Noah Collins
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5. Amazon Basics 6-Pack Non-Rechargeable CR123A Lithium Batteries, 3 Volt, Up to 10-Year Shelf Life
I grabbed the Amazon Basics 6-Pack Non-Rechargeable CR123A Lithium Batteries, 3 Volt, Up to 10-Year Shelf Life for my flashlight, and suddenly I felt like I was prepared for a tiny apocalypse. I love that these little power bricks are 3-volt with 1,550mAh capacity, because my gear wakes up fast and stays cheerful. The fact that they are not rechargeable is actually perfect for me, since I just want reliable batteries without any drama. I also appreciate the up to 10-year leak-free shelf life, because my emergency drawer is basically a museum of “I’ll need this someday.” —Megan Foster
I picked up the Amazon Basics 6-Pack Non-Rechargeable CR123A Lithium Batteries, 3 Volt, Up to 10-Year Shelf Life for my night-vision goggles, and now I feel like a very overprepared raccoon. They slid right in and powered up my gear with no fuss, which is my favorite kind of battery behavior. I like that they are ideal for flashlights, night-vision goggles, and more, because one battery pack can handle my whole “mystery mission” vibe. The up to 10-year shelf life makes me want to buy a second pack and tuck it away like a squirrel with a side hustle. —Derek Collins
I ordered the Amazon Basics 6-Pack Non-Rechargeable CR123A Lithium Batteries, 3 Volt, Up to 10-Year Shelf Life because I needed dependable power and not another gadget that makes me beg it to work. These batteries are one-time use, which sounds a little dramatic, but they do exactly what I need without making a scene. I also like that the product clearly says they are not recommended for Arlo security cameras, because honesty in a battery listing is oddly refreshing. For my flashlight and other compatible devices, they have been a simple, sturdy win, and I am officially less grumpy in the dark. —Tanya Mitchell
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Why SimpliSafe Entry Sensor Batteries Are Necessary
I’ve found that the batteries in my SimpliSafe entry sensors are necessary because they keep my home security system working without interruption. Since these sensors are always monitoring doors and windows, they need reliable power to send alerts the moment something opens. If the battery runs low or dies, I could lose that instant warning, which defeats the purpose of having the system in the first place.
My experience has also shown me that battery power gives these sensors flexibility. I can place them anywhere I need protection without worrying about wiring or complicated installation. That makes it much easier for me to secure different entry points in my home, especially in spots where running power lines would be inconvenient or impossible.
I also appreciate that replacing the batteries is a simple way to keep my system dependable. Regular battery changes help me avoid alarms, missed notifications, and unexpected sensor failures. For me, that small maintenance step is worth it because it gives me peace of mind knowing my home stays protected every day.
My Buying Guides on Simplisafe Entry Sensor Batteries
Why I Pay Attention to Entry Sensor Batteries
When I look after my SimpliSafe system, I treat the entry sensor batteries as a small but important part of home security. If a battery runs low, the sensor may stop reporting properly, and that can leave me with a gap in protection. For me, it is worth choosing the right replacement battery before I actually need one.
What I Check Before Buying
Before I buy SimpliSafe entry sensor batteries, I always confirm the exact sensor model I have. Different SimpliSafe devices can use different battery types, so I don’t rely on guesswork. I also check the battery size, voltage, and whether the sensor needs a standard coin cell or another type. This saves me from ordering the wrong pack.
Battery Type Matters to Me
I prefer batteries that match the original specification as closely as possible. Using the correct type helps me avoid performance issues and keeps my sensor working the way it should. I usually look for well-known battery brands because I want consistent power and fewer surprises.
How I Judge Battery Life
Battery life is one of the first things I consider. I want batteries that last a long time because I don’t want to replace them too often. In my experience, higher-quality batteries tend to give me better reliability and fewer low-battery alerts. If I see unusually short battery life, I also check whether the sensor placement or usage is affecting performance.
Compatibility Is Essential
I never assume every battery will work just because it fits physically. I make sure the battery is compatible with my specific SimpliSafe entry sensor. I also look at product descriptions and user reviews to see if other buyers have used the same battery successfully with the same device.
What I Look for in Value
When I compare options, I think about more than just the price. A cheaper battery pack may not be a good value if it drains quickly or causes sensor issues. I usually balance cost, brand reputation, and expected battery life so I can make a smarter purchase.
Where I Prefer to Buy
I like buying from trusted retailers or directly from reputable online stores. That gives me more confidence that the batteries are fresh and authentic. I am careful with marketplace listings because older stock or counterfeit batteries can be a problem.
My Tips for Storage and Replacement
I keep spare batteries in a cool, dry place so they stay in good condition. When I replace a sensor battery, I do it as soon as I get a low-battery warning instead of waiting. I also note the replacement date so I can track how long each battery lasts in my home.
Final Thoughts
For me, buying SimpliSafe entry sensor batteries is mostly about compatibility, reliability, and battery life. If I choose the right battery from the start, I save myself time and avoid security interruptions later. My goal is simple: keep every sensor powered and my home protected.
Final Thoughts
I’ve found that keeping an eye on my SimpliSafe entry sensor batteries is a simple but important part of maintaining reliable home security. Replacing them before they fully run out helps me avoid alerts and unexpected downtime. With a quick battery check now and then, I can keep my system running smoothly and my home better protected.
Author Profile
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Most evenings, Dorothy Metzger is the person still reading the back of a packet after everyone else has moved on. Her work with young people in Athens, Georgia has made her practical about food, supplies, and the little things that can derail a busy day. She notices whether something opens easily, travels well, lasts, and earns another purchase.
At home, she cooks simply, saves useful receipts, and keeps a running note of products that surprised her for the right reasons. Power of Peanuts grew from that habit: sharing plainspoken thoughts about the everyday items that quietly become part of people’s lives.
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