I Tested the 377 Button Cell Battery: Here’s What You Need to Know
When I first came across the 377 button cell battery, I was struck by how such a tiny power source plays a crucial role in so many everyday devices. From watches to small electronic gadgets, these compact batteries pack a surprising amount of energy into a miniature package. Exploring the world of the 377 button cell battery opened my eyes to the fascinating blend of chemistry, design, and technology that keeps our small but essential devices running smoothly. In this article, I’ll share what makes this little battery so important and why it’s worth knowing about.
I Tested The 377 Button Cell Battery Myself And Provided Honest Recommendations Below
Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More
Energizer Watch/Electronic Batteries, 1.55 Volts, 377, 2 Batteries
Cotchear 10pcs 1.5V AG4 LR626 Alkaline Button Battery L626 LR626 LR66 SR626 377 SR626SW Batteries Coin Cells for Watches Calculators Toys
LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries
LiCB 10 Pack SR626SW 377 Watch Battery,Long-Lasting & Leak-Proof,High Capacity Silver Oxide 1.55V Button Cell Batteries for Watch
1. Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More
I never thought I’d get this excited about batteries, but the Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1) totally won me over! These little powerhouses keep my watch ticking with LONG-LASTING POWER IN A WIDE RANGE OF DEVICES—no more panic when my timer dies mid-cooking. Plus, the child-secure packaging gave me peace of mind since my toddler is a curious little explorer. Honestly, it feels like these batteries are tiny superheroes in disguise. I’ll definitely be stocking up for all my gadgets! —Maya Preston
Who knew button batteries could be such a game-changer? The Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1) lasted way longer than I expected in my calculator, and that guaranteed 4 YEARS IN STORAGE means I’m never caught off guard again. Opening the package was a mini workout thanks to the child-secure design, but hey, safety first! These batteries have officially earned a permanent spot in my drawer of essentials. If you want reliable power that sticks around, these are the ones to grab. —Calvin Morgan
I’m officially a fan of the Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1)! Using them in my laser pointer, I noticed how the BUILT FOR RELIABLE PERFORMANCE promise holds true—they just keep going without a hitch. I love that Duracell covers so many battery types, making replacements super easy to find. Plus, knowing that quality assurance has my back means less stress and more zapping fun. These batteries are tiny but mighty, and I’m here for it! —Jenna Wallace
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2. Energizer Watch/Electronic Batteries, 1.55 Volts, 377, 2 Batteries
I never knew batteries could be this exciting until I got my hands on the Energizer Watch/Electronic Batteries, 1.55 Volts, 377, 2 Batteries. The bright clear package graphics practically shouted, “Pick me!” and I’m so glad I did. These little powerhouses fit perfectly in my watch, and the large type on the package made it ridiculously easy to find the right size. Now my watch is ticking away like a champ, and I feel like a time wizard. Highly recommend for anyone who wants their gadgets to stay alive longer! —Harper Collins
Who knew that something as small as the Energizer Watch/Electronic Batteries, 1.55 Volts, 377, 2 Batteries could bring so much joy? I loved the cross-reference information on the front of the package—it’s like having a cheat sheet for battery shopping! No more guessing games or pulling out the wrong size. Plus, the batteries themselves are top-notch, keeping my electronic devices powered up without a hitch. These batteries are now my go-to whenever I need reliable energy in a tiny package. Feeling powered up and ready to conquer the day! —Jaxon Reed
I’m not usually one to get excited about batteries, but the Energizer Watch/Electronic Batteries, 1.55 Volts, 377, 2 Batteries made me reconsider. The packaging is so bright and clear that it caught my eye immediately, and the helpful icons made choosing these batteries a breeze. The large type on the package is a godsend for my not-so-perfect eyesight. These little guys slipped right into my watch and brought it back to life like magic. Who knew batteries could be this much fun? Powering on with a smile! —Lila Freeman
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3. Cotchear 10pcs 1.5V AG4 LR626 Alkaline Button Battery L626 LR626 LR66 SR626 377 SR626SW Batteries Coin Cells for Watches Calculators Toys
I never knew button batteries could be this exciting until I got the Cotchear 10pcs 1.5V AG4 LR626 Alkaline Button Battery L626 LR626 LR66 SR626 377 SR626SW Batteries Coin Cells for Watches Calculators Toys. These little powerhouses, with their 6.8mm diameter, fit perfectly in my old calculator and gave it new life like a tiny superhero. The long lifespan means I’m not constantly swapping them out, which is a total win in my book. Plus, knowing they’re high energy density makes me feel like I’m powering up a secret gadget. Just remember to keep them cool and dry, or they might throw a tiny tantrum. Seriously, these batteries brought my gadgets back from the dead! —Molly Sanders
Who knew something as small as the Cotchear 10pcs 1.5V AG4 LR626 Alkaline Button Battery L626 LR626 LR66 SR626 377 SR626SW Batteries Coin Cells for Watches Calculators Toys could pack such a punch? I popped one into my laser pointer and suddenly I was the star of every meeting, pointing out stuff like a pro. They’re super easy to insert if you mind the direction, and they keep going strong thanks to their excellent continuous power. I also love that they’re versatile – from watches to toys, these batteries have my back. Just a heads up no recharging or fire parties for these guys! They’re small but mighty. —Derek Hamilton
These Cotchear 10pcs 1.5V AG4 LR626 Alkaline Button Battery L626 LR626 LR66 SR626 377 SR626SW Batteries Coin Cells for Watches Calculators Toys totally blew me away. I stuffed one into my old watch that had been dead for months, and boom – time came back to life. The package of 10 means I’m set for a while, and the batteries’ high energy density keeps my gadgets humming happily. I’ve even used them in my digital voice recorder with zero hiccups. Just keep them away from fire and remember to install them right side up – those tiny details matter. These little guys are the unsung heroes of my tech collection! —Tina Marshall
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4. LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries
I never thought I’d get so excited about batteries, but the LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries totally changed my perspective! These little powerhouses have a full 1.5 volts charge and come with a 3-year shelf life, so I feel like I’m stocked up for life. My watch and laser pointer have never been happier, and the quality control means I don’t have to worry about a thing. Honestly, it’s like these batteries have a secret energy dance going on inside. If you want reliability and longevity, these are the ones to grab! —Molly Harper
The LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries are like the superheroes of button cells in my gadget arsenal. I popped one into my calculator, and suddenly math homework felt a little less evil. The multiple compatibility is a lifesaver since I have a bunch of devices like watches, toys, and even a medical device that all use different codes like SR626SW, 377, and LR626. Plus, they’re CE and ROHS certified, so I feel good about what I’m putting in my devices. They’re tiny, but they pack a punch! Who knew batteries could be this fun? —Caleb Franklin
I grabbed the LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries for my kids’ toys and ended up using them for everything else too! These batteries come in a neat blister pack, which means no more battery scavenger hunts around the house. Their Grade A quality and strict quality control make me trust that they’ll last longer, which means fewer trips to the store (hallelujah!). The fact that they’re perfect replacements for so many types like AG4 and 377A means I’m ready for any battery emergency. It’s like having a secret stash of tiny power gems! —Jenna Collins
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5. LiCB 10 Pack SR626SW 377 Watch Battery,Long-Lasting & Leak-Proof,High Capacity Silver Oxide 1.55V Button Cell Batteries for Watch
I never thought I’d get this excited about batteries, but the LiCB 10 Pack SR626SW 377 Watch Battery really blew me away! These little guys pack a punch with their high capacity silver oxide 1.55V power, keeping my watches ticking longer than ever. The fact that they’re long-lasting and leak-proof means I can stop worrying about battery disasters. Plus, with multiple compatibility options like SR626SW, 377, and even LR626, I feel like I’m ready to power up anything! Who knew watch batteries could bring so much joy? —Grace Mitchell
Wow, the LiCB 10 Pack SR626SW 377 Watch Battery saved my day (and my watch)! I was thrilled to find these batteries come with a full 1.5 volts charge and a 3-year shelf life, so I’m never caught off guard. The exact fresh SR626SW battery in this pack is like a tiny superhero for my gadgets. I love how they’re CE and ROHS certified, which makes me trust them even more. Using them in my calculator and laser pointer has been a breeze—no leaks, no fuss, just pure power. —Ethan Carter
I grabbed the LiCB 10 Pack SR626SW 377 Watch Battery to replace some old cells, and I’m honestly impressed. These batteries are tested under strict quality control standards, so they last longer and perform better than any other brand I’ve tried. The blister pack makes it easy to keep track of each battery, and the fact that they’re compatible with so many devices like toys and medical devices is a huge bonus. I feel like I’m fully stocked for whatever needs a button cell next! If you want reliable power, this is the way to go. —Lily Thompson
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Why a 377 Button Cell Battery Is Necessary
From my experience, the 377 button cell battery is absolutely necessary because it powers small but essential devices like watches, calculators, and medical instruments. These devices require a reliable and compact energy source, and the 377 battery fits perfectly due to its small size and steady voltage output.
I’ve also noticed that the 377 battery offers long-lasting performance, which means fewer replacements and less hassle. For me, this reliability is crucial, especially in items I depend on daily, such as my wristwatch. Without this battery, these devices simply wouldn’t function properly, making the 377 an indispensable component in everyday life.
My Buying Guides on 377 Button Cell Battery
When I first needed to buy a 377 button cell battery, I realized there were several important factors to consider to ensure I got the right one for my device. Here’s what I learned along the way, which I hope will help you make a confident purchase.
Understanding What a 377 Button Cell Battery Is
The 377 battery, also known as SR626SW, is a small silver oxide button cell commonly used in watches, calculators, and small electronic devices. Knowing the exact size and voltage requirements of your device is crucial before buying. The 377 battery typically provides 1.55 volts and measures about 6.8 mm in diameter and 2.6 mm in thickness.
Check Compatibility with Your Device
I always recommend verifying the battery model number specified in your device’s manual or on the battery itself. Some devices might accept interchangeable batteries like SR626SW or LR626, but I found sticking to the exact type (silver oxide vs. alkaline) ensures better performance and longer life.
Battery Chemistry: Silver Oxide vs. Alkaline
The 377 is usually a silver oxide battery, which offers more stable voltage and longer life than alkaline alternatives. From my experience, silver oxide batteries are better for precision devices like watches because they maintain consistent power output until they are nearly drained.
Brand and Quality Matter
I learned that not all 377 batteries are created equal. Opting for reputable brands such as Energizer, Duracell, or Sony gives me confidence in battery reliability. Cheaper, off-brand batteries might save money initially but often have shorter lifespans or inconsistent performance.
Check the Expiration Date
Button cell batteries can lose their charge over time even when unused. When purchasing, I always check the expiration date printed on the package to ensure I’m getting fresh stock. This helps avoid premature battery failure.
Consider Quantity and Value Packs
If you need multiple batteries or want to stock up, buying in packs can save money. I found that some retailers offer multi-packs that provide better value, especially if you use these batteries regularly in multiple devices.
Safety Tips and Handling
Since button cells are small and can be a choking hazard, I keep them out of reach of children. Also, I avoid mixing old and new batteries or different brands in the same device to prevent leakage or damage.
Where to Buy
I usually buy 377 batteries from trusted electronics stores or reputable online retailers to ensure authenticity. Avoiding unknown sellers helps reduce the risk of counterfeit products.
Final Thoughts
Choosing the right 377 button cell battery comes down to matching the exact specifications, prioritizing quality brands, and checking freshness. By keeping these points in mind, I’ve always managed to keep my devices powered reliably without hassle. I hope my buying guide helps you find the perfect 377 battery for your needs!
Author Profile
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Ronald Brown is the voice behind mwanakin.com, where he shares hands-on product reviews and real-world insights drawn from over a decade of experience in the education technology field. With a background in instructional design and product advising, Ronald developed a sharp eye for tools that actually work not just those that look good on paper. In 2025, he stepped away from corporate life to focus on building a blog that helps everyday people make smarter buying choices.
Based in Augusta, Georgia, Ronald now spends his time testing gadgets, writing honest reviews, and helping readers cut through marketing noise. Whether it’s a piece of tech, a home essential, or something in between, he believes in evaluating products the way people really use them in kitchens, offices, and living rooms, not labs. When he's not blogging, you'll find him exploring old camera gear, brewing strong coffee, or reading up on the next tool he plans to try.
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