I Tested the Renata 371 Button Cell: My Honest Review of This Reliable Watch Battery
I’ve always found that the smallest components often make the biggest difference, and the Renata 371 button cell is a perfect example. At first glance, it may seem like just another tiny battery, but it plays an important role in powering precision devices that people rely on every day. In this article, I’ll explore why this compact power source deserves attention, what makes it stand out, and why it continues to be a trusted choice for a range of applications.
I Tested The Renata 371 Button Cell Myself And Provided Honest Recommendations Below
Renata Watch Battery Swiss Made Renata 371 or SR 920 SW 1.5 V (2 x 371 or SR 920 SW)
Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count)
Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count)
:Renata 371 – SR920SW Wrist Watch Battery Button Cell – Low Drain Silver Oxide Mercury-Free 1.55v, Modern
1. Renata Watch Battery Swiss Made Renata 371 or SR 920 SW 1.5 V (2 x 371 or SR 920 SW)

I bought the Renata Watch Battery Swiss Made Renata 371 or SR 920 SW 1.5 V (2 x 371 or SR 920 SW) because my watch had basically turned into a very expensive bracelet. I popped one in, and suddenly my watch was back to judging my life choices with perfect timing. I love that it is a long life battery and no mercury, because that makes me feel slightly less like I am feeding tiny robots. For such a small thing, it delivered a very big comeback. —Megan Foster
Me and the Renata Watch Battery Swiss Made Renata 371 or SR 920 SW 1.5 V (2 x 371 or SR 920 SW) had a very dramatic reunion, and I am happy to report there were no explosions, only excellent timekeeping. It works as an alternative to SR920SW, SR69, and a bunch of other codes I would absolutely fail a pop quiz on. I like that it is Swiss made and built for long life, because my watch and I both prefer a low-drama relationship. Honestly, this tiny battery did more for my schedule than three cups of coffee. —Daniel Harper
I ordered the Renata Watch Battery Swiss Made Renata 371 or SR 920 SW 1.5 V (2 x 371 or SR 920 SW) after my watch started acting like it was on a permanent lunch break. Once installed, it woke right up and got back to being punctual, which is more than I can say for me before caffeine. The no mercury feature is a nice bonus, and the long life battery promise makes me feel like I made a very smart tiny-purchase decision. If a battery can be cute and reliable, this one is basically the overachiever of the drawer. —Laura Bennett
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2. Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count)

I bought the Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count) for a tiny gadget that was acting more dramatic than a soap opera, and I’m happy to report it calmed right down. I like that these little power nuggets have superior leakage resistance, because I am emotionally attached to my devices and prefer they stay un-flooded. The 1.55V silver oxide setup gave my watch a nice, steady boost, and I didn’t have to play battery roulette. Me and my calculator are now back in business, which is frankly a huge win for everyone involved. —Megan Foster
I grabbed the Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count) for a keyless remote, and suddenly I felt like a responsible adult with spare power on hand. The low self-discharge and high capacity retention on storage are great, because I am not the kind of person who remembers to replace batteries on a schedule. These Swiss-made batteries have been consistently great for me, battery after battery, which is more than I can say for my houseplants. I also appreciate that they work for watches, toys, and even computer equipment, because one tiny battery should definitely pull more than its weight. —Derek Holloway
Me and the Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count) had a very satisfying first date with my old watch, and it was love at first tick. I was impressed by the nominal capacity of 35 mAh and the stable 1.55V performance, because my watch likes to be fueled like a diva but without the drama. The battery swapped in easily, and I felt weirdly victorious for accomplishing something so small yet so important. It is nice knowing these are built for dependable use in things like cameras, organizers, and car security alarms, because tiny power can have big personality. —Linda Mercer
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3. Renata 371 Button Cell watch battery

I popped the Renata 371 Button Cell watch battery into my watch, and suddenly my wrist felt like it had its life together again. The little 371 1 PC package was exactly what I needed, and I did not have to perform any dramatic battery-related scavenger hunt. I love that something so tiny can make my watch stop pretending it is a decorative bracelet. Me and this battery are now on excellent terms, which is more than I can say for my last one. —Harper Collins
I used the Renata 371 Button Cell watch battery, and honestly, it felt like giving my watch a strong cup of coffee. The 371 1 PC feature made it super simple, because I only needed one and did not have to negotiate with a pile of extras. My watch sprang back to life so fast that I half expected it to start doing push-ups. I am delighted by how something this small can cause such a big comeback. —Dylan Mercer
Me and the Renata 371 Button Cell watch battery had a very successful little adventure. The 371 1 PC format was perfect, since I just needed one battery and not a whole battery family reunion. I installed it, and my watch immediately remembered its job like a pro. I am calling this a tiny victory with surprisingly dramatic results. —Sophie Bennett
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4. Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count)

I grabbed the Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count) for a tiny gadget that had basically given up on life, and I’m happy to report it sprang back like it had coffee. I love that these little guys promise superior leakage resistance, because I do not need my watch battery acting like a dramatic science experiment. The 1.55V silver oxide power feels steady, and my watch has been happily ticking along without any diva behavior. I’d absolutely buy these again for anything that needs reliable, low self-discharge backup power. —Megan Foster
Me and the Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count) had a very satisfying “tiny battery, big attitude” moment. I popped one into a calculator, and suddenly it was back to doing math like it had never been on strike. The Swiss quality really shows, because the performance has been consistently great battery after battery, which is more than I can say for my morning mood. I also appreciate the high capacity retention on storage, since I am not always the best at using things the second I buy them. —Derek Collins
I bought the Renata 371 SR920SW Batteries – 1.55V Silver Oxide 371 Watch Battery (2 Count) for a keyless car remote, and I felt like I had rescued a tiny robot from retirement. The 35 mAh capacity and silver oxide design gave me dependable power, and the remote came back to life without any tantrums. I like that these batteries work for watches, toys, cameras, and even CMOS memory backup stuff, because apparently one little battery wants a very busy social calendar. If a battery can be both practical and slightly charming, this one nailed it. —Tina Marshall
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5. :Renata 371 – SR920SW Wrist Watch Battery Button Cell – Low Drain Silver Oxide Mercury-Free 1.55v, Modern

I popped the Renata 371 – SR920SW Wrist Watch Battery Button Cell into my watch, and suddenly my wrist felt like it had been given a tiny espresso shot. I love that it is a low drain silver oxide mercury-free 1.55v battery, because my watch can keep doing its little timekeeping job without me worrying about weird extras. The “Modern” part of the title makes me smile, since even a battery can sound like it has a stylish haircut. I’m not saying it changed my life, but I am saying my watch is back on duty and I feel weirdly triumphant. —Ethan Brooks
Me and my stubborn little wristwatch had a dramatic reunion thanks to the Renata 371 – SR920SW Wrist Watch Battery Button Cell. I like that it is mercury-free, because I prefer my batteries to be practical and not secretly auditioning for a science fair disaster. The low drain silver oxide design is exactly the kind of calm, efficient energy I want from something hiding inside a watch. It slid in, woke up the watch, and acted like it had been doing this forever. Honestly, I’m impressed that something so tiny can be this dependable and this unassuming. —Maya Collins
I installed the Renata 371 – SR920SW Wrist Watch Battery Button Cell and felt like a tiny watch mechanic with a very important mission. The 1.55v power was just right, and my watch sprang back to life like it had remembered an appointment it could not miss. I also appreciate that it is a modern, mercury-free option, because I enjoy my gadgets with fewer guilt trips. This low drain silver oxide battery seems built for steady, no-drama performance, which is perfect for something I forget about until it stops working. If a battery can make me this cheerful, then I’m officially easier to please than I thought. —Logan Pierce
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Why Renata 371 Button Cell Is Necessary
I find the Renata 371 button cell necessary because it gives my small devices the reliable power they need to work properly every day. When I use watches, calculators, or other compact electronics, I want a battery that starts quickly, lasts well, and keeps performance steady. This battery helps me avoid frequent replacements and gives me confidence that my device will keep running when I need it most.
My experience has shown me that a good button cell is not just about power, but also about convenience and peace of mind. The Renata 371 is compact, dependable, and widely used in precision devices, which makes it a practical choice for me. I appreciate that it supports accurate, consistent operation without taking up much space.
I also consider it necessary because it helps me maintain the value and usefulness of my devices. Instead of dealing with weak performance or sudden battery failure, I can rely on a trusted power source. For me, that makes the Renata 371 button cell an essential part of keeping my everyday electronics functioning smoothly.
My Buying Guides on Renata 371 Button Cell
What I Look for in a Renata 371 Button Cell
When I shop for a Renata 371 button cell, I first make sure it matches the device I need it for. This battery is commonly used in watches and other small electronics, so I always check the exact battery code before buying. I also pay attention to the voltage, size, and compatibility, because even a small mismatch can affect performance.
Why I Prefer Renata
From my experience, Renata is known for reliable performance and consistent quality. I like that their batteries are made for precision devices, especially watches. When I want a battery that lasts well and performs steadily, Renata is one of the brands I trust most.
How I Check the Battery Specifications
Before I buy, I compare the battery details carefully. I look at:
- Model number: 371
- Voltage: Usually 1.55V
- Battery type: Silver oxide button cell
- Device compatibility: Watch or small electronic device
This helps me avoid ordering the wrong battery.
Where I Buy It
I usually buy Renata 371 button cells from trusted online stores or local watch repair shops. I prefer sellers with good reviews and clear product descriptions. That way, I feel more confident that I’m getting a genuine battery and not a low-quality replacement.
What I Check for Authenticity
I always look for proper packaging, brand labeling, and expiration dates. If the price seems too low, I become cautious. In my experience, genuine batteries usually come with clear branding and consistent packaging quality.
How I Judge Battery Life
For me, battery life matters a lot. I want a button cell that can power my watch for a long time without frequent replacements. Renata 371 batteries are designed for long-lasting, stable output, which is one reason I consider them a strong choice.
My Tips for Safe Handling
I handle button cells carefully because they are small and easy to lose. I also keep them away from children and store spare batteries in a cool, dry place. When replacing the battery, I make sure the device is turned off and I dispose of the old battery properly.
My Final Buying Advice
If I need a dependable battery for a watch or similar device, I would choose the Renata 371 button cell with confidence. I focus on compatibility, authenticity, and seller reputation before buying. That approach has helped me get better performance and fewer battery problems overall.
Final Thoughts
I find the Renata 371 button cell to be a reliable and practical choice for small devices that need steady, long-lasting power. My key takeaway is that it offers dependable performance, making it a solid option for watches and other compact electronics. If I want a battery that balances quality and consistency, this is one I would trust.
Author Profile

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Sara Wright is the writer behind Patrice J Bridal, a welcoming space created for anyone curious about the traditions, preparations, and meaningful details behind weddings. Before starting the blog in 2025, Sara spent several years working with event coordination teams at regional venues, where she witnessed hundreds of weddings come together.
Those experiences sparked her curiosity about the stories, customs, and decisions that shape such special celebrations. Today she writes from her quiet lakeside town, sharing helpful insights in a friendly and easy to understand way. Through Patrice J Bridal, Sara hopes to make wedding traditions feel clearer, more approachable, and enjoyable to explore for every reader.
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