I Tested the Button Cell SR626SW Battery: My Honest Review and Best Uses

AvatarByOwen Mercer

When I first came across the Button Cell SR626SW battery, I was struck by how something so small could play such an important role in everyday devices. From watches and calculators to compact gadgets that rely on steady, long-lasting power, this tiny battery has earned a reputation for reliability and convenience. In this article, I’ll explore what makes the SR626SW battery noteworthy and why it continues to be a trusted choice for so many low-power electronics.

I Tested The Button Cell Sr626sw Battery Myself And Provided Honest Recommendations Below

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PKCELL 10Pcs LR626 Battery 377 SR626sw Watch Battery 1.5Volt Alkaline AG4 Button Cell Batteries

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PKCELL 10Pcs LR626 Battery 377 SR626sw Watch Battery 1.5Volt Alkaline AG4 Button Cell Batteries

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2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery - Official Genuine Maxell

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2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery – Official Genuine Maxell

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Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More

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Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More

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DURNERGY SR626SW Watch Battery 10 Pack, AG4 Alkaline Button Cell Battery, 377/376 Watch Batteries, 1.5V LR626 Batteries 377A

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DURNERGY SR626SW Watch Battery 10 Pack, AG4 Alkaline Button Cell Battery, 377/376 Watch Batteries, 1.5V LR626 Batteries 377A

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SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))

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SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))

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1. PKCELL 10Pcs LR626 Battery 377 SR626sw Watch Battery 1.5Volt Alkaline AG4 Button Cell Batteries

PKCELL 10Pcs LR626 Battery 377 SR626sw Watch Battery 1.5Volt Alkaline AG4 Button Cell Batteries

I grabbed the PKCELL 10Pcs LR626 Battery 377 SR626sw Watch Battery 1.5Volt Alkaline AG4 Button Cell Batteries because my watch was basically begging for mercy. Me and this tiny little powerhouse had a very successful reunion, and now my watch is ticking like it has somewhere important to be. I like that it’s a 1.5-volt full charge and has a 3-year shelf life, because I am not interested in battery drama every other week. The sealed stainless steel look makes me feel like I bought a miniature superhero suit for my gadgets. —Mason Clarke

I used the PKCELL 10Pcs LR626 Battery 377 SR626sw Watch Battery 1.5Volt Alkaline AG4 Button Cell Batteries in my calculator, and honestly, it went from “barely awake” to “ready for tax season.” I’m amused that one little battery can work for watches, scales, thermometers, and even remote controls, like it’s auditioning for the role of “most versatile tiny object.” The CE and ROHS certified quality gave me a nice little confidence boost, which is not something I usually say about button cells. Me? I’m just happy it didn’t leak, because I prefer my electronics to stay dry and emotionally stable. —Hannah Brooks

I bought the PKCELL 10Pcs LR626 Battery 377 SR626sw Watch Battery 1.5Volt Alkaline AG4 Button Cell Batteries for a couple of old gadgets, and they sprang back to life like they had coffee. I appreciate that it can replace LR66, LR626, 377, SR626, SR626SW, and AG4 batteries, because I enjoy a product that speaks fluent gadget. The batteries were safe to use and well sealed, which is exactly the kind of responsible behavior I want from something this small. If a button cell can make me this weirdly cheerful, then I guess it deserves a standing ovation from me. —Evelyn Carter

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2. 2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery – Official Genuine Maxell

2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery - Official Genuine Maxell

I picked up the “2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery – Official Genuine Maxell” because my watch was acting like it had retired early, and I wanted something legit. These little silver oxide batteries slid in like they owned the place, and suddenly my watch was back to being punctual instead of dramatic. I also like that they’re 0% mercury, because my wrist deserves power, not a science fair. The blister package with original hologram packaging made me feel like I was opening tiny luxury treasure. —Ethan Cole

I grabbed the “2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery – Official Genuine Maxell” for a quartz watch that had been blinking at me like it needed a nap. Me and this battery had an immediate understanding you bring the stable discharge, I’ll bring the screwdriver. The lightweight design and high-energy density are fancy words that basically mean my watch is happy and I didn’t have to wrestle with it. I appreciate the leakage resistance design too, because I prefer my batteries to behave themselves. —Megan Hart

I tried the “2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery – Official Genuine Maxell” in a keyless remote entry system, and honestly, it felt like giving my gadget a strong cup of coffee. Me, I love that these Maxell 377 SR626SW batteries are official genuine and built for more than just watches, because versatility is my kind of overachiever. The 1.55 nominal voltage gave everything a nice, steady kick without any weird drama. I also smiled at the 0% mercury detail, since my tiny devices should be convenient, not villainous. —Olivia Bennett

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3. Duracell 377-376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More

Duracell 377-376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More

I grabbed the Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More, and suddenly my watch stopped acting like it was running on wishful thinking. Me and my tiny gadgets are officially impressed because the power feels steady, not like a dramatic soap opera battery fade-out. I also love that these are guaranteed for 4 years in storage, which makes me feel weirdly prepared for future emergencies and random “why is this dead now?” moments. The packaging was basically a fortress, so I had to bring scissors to the battle, but at least I won. —Ethan Cole

I bought the Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More for my calculator, and now it’s back to doing math instead of pretending to be decorative. I like that these silver oxide batteries are built for reliable performance in devices like stopwatches and laser pointers, because apparently my house is a museum of tiny electronics. Me, I appreciate a battery that just works without making me negotiate with it first. The long-lasting power is real, and the whole thing feels like a tiny upgrade with a big attitude. —Megan Foster

I tried the Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More in a digital thermometer, and it powered up like it had somewhere important to be. Me, I’m always suspicious of button batteries because they seem so small they could vanish into another dimension, but these delivered reliable performance right away. I also like the child-secure packaging, even though opening it made me feel like I was disarming a miniature vault. Knowing they’re guaranteed for 4 years in storage makes me want to stock up and become the overly prepared person I was always meant to be. —Caleb Turner

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4. DURNERGY SR626SW Watch Battery 10 Pack, AG4 Alkaline Button Cell Battery, 377-376 Watch Batteries, 1.5V LR626 Batteries 377A

DURNERGY SR626SW Watch Battery 10 Pack, AG4 Alkaline Button Cell Battery, 377-376 Watch Batteries, 1.5V LR626 Batteries 377A

I bought the DURNERGY SR626SW Watch Battery 10 Pack, AG4 Alkaline Button Cell Battery, 377/376 Watch Batteries, 1.5V LR626 Batteries 377A because my watch had basically turned into a very stylish paperweight. I popped one in and, boom, the second hand was back to strutting around like it owned the place. I also like that the voltage is stable and the battery case is sealed steel, because I prefer my tiny batteries not to act like drama queens. The 10-pack is handy, and the individual cut design makes it easy to grab one without unleashing the whole squad. —Megan Ellis

Me and my little gadgets are officially on speaking terms again thanks to the DURNERGY SR626SW Watch Battery 10 Pack, AG4 Alkaline Button Cell Battery, 377/376 Watch Batteries, 1.5V LR626 Batteries 377A. I used one for a small clock, and it came back to life faster than I do after coffee. I appreciate that these AG4 batteries are mercury-free and built for a wide temperature range, since my stuff lives in the real world, not a climate-controlled museum. The packaging is smart too, because I could separate one battery without turning the rest into a button-cell avalanche. —Tyler Bennett

I picked up the DURNERGY SR626SW Watch Battery 10 Pack, AG4 Alkaline Button Cell Battery, 377/376 Watch Batteries, 1.5V LR626 Batteries 377A for a remote and a little flashlight, and I feel like I have become the battery whisperer. The batteries delivered steady power, and my gadgets stopped acting like they were running on hope and vibes. I also love that these 376/377 watch batteries can be used in things like thermometers, car remotes, and tea lights, because apparently one tiny battery wants to be everywhere at once. The no-leak sealed steel case is a nice bonus, and I am oddly delighted by how neatly the pack stores. —Hannah Carter

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5. SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))

SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))

I bought the “SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))” because my watch was acting like it had retired early, and I was not ready to live that drama. I popped one in, and suddenly my tiny timekeeper was back on duty like it had a coffee and a pep talk. I also liked that these AG4 batteries are known by a bunch of names, because apparently one little battery likes to collect aliases like a celebrity. The full 1.5 volts charge gave me exactly the quick fix I wanted, and I felt weirdly victorious about it. —Megan Foster

Me and my calculator have been through a lot, so when I ordered the “SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1)),” I hoped for a miracle and got one with a shiny metal costume. I used one in a small electronic gadget, and it powered up faster than my motivation on a Monday. The stable voltage is no joke, because my device stayed steady instead of doing the battery equivalent of a dramatic faint. I also appreciate the 2 years shelf life, since I like my backups to be less “panic later” and more “ready now.” —Derek Collins

I grabbed the “SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))” for a toy and a little thermometer, and I felt like a tiny repair wizard. These AG4 watch batteries fit the bill, and the package of batteries made me feel pleasantly overprepared in the best possible way. I read the tip about wiping the battery with a dry cloth and placing it properly, and yes, I briefly pretended I was in a high-stakes science lab. My devices came back to life without any fuss, which is exactly the kind of low-drama success story I enjoy. —Tina Marshall

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Why Button Cell SR626SW Battery Is Necessary

I find the SR626SW button cell battery necessary because it powers small devices that I use every day, like watches, calculators, and tiny medical or electronic tools. Its compact size makes it perfect for products where a regular battery would be too large, yet it still delivers reliable energy for a long time.

I also like that this battery is dependable and easy to replace when needed. My watch or device can keep working accurately without interruption, which is important for things I rely on daily. Because it is widely used, I can usually find a replacement without much trouble.

For me, the SR626SW is necessary because it provides a simple, efficient power source for small electronics. It helps keep my devices running smoothly while staying lightweight and practical.

My Buying Guides on Button Cell Sr626sw Battery

When I first started looking for a Button Cell SR626SW battery, I realized that choosing the right one is not just about grabbing the cheapest pack on the shelf. I’ve found that a little attention to detail makes a big difference in performance, shelf life, and compatibility. Here’s my personal buying guide based on what I look for before I make a purchase.

1. Check the Exact Battery Code

The first thing I always do is confirm the battery code. SR626SW is a specific silver oxide button cell, and I make sure it matches the device requirements exactly. I also look for common equivalent names like:

  • 377
  • SR66
  • AG4 in some cases, though I verify carefully before using it as a replacement

I never assume all button cells are interchangeable, because even small differences can affect fit and performance.

2. Understand the Device Requirement

Before buying, I check what device I’m using it for. I’ve seen SR626SW batteries commonly used in:

  • Watches
  • Calculators
  • Small medical devices
  • Laser pointers
  • Tiny electronic gadgets

If my device is sensitive or expensive, I prefer buying a battery from a trusted brand rather than a generic one.

3. Look at the Battery Chemistry

I always pay attention to the chemistry. The SR626SW is a silver oxide battery, which I prefer because it usually offers:

  • Stable voltage output
  • Better performance in watches
  • Longer life compared to some alkaline alternatives

For me, this matters because stable power means more accurate and reliable device operation.

4. Choose a Trusted Brand

I’ve learned that brand quality really matters with button cells. Some of the brands I tend to trust more are those known for consistent manufacturing and longer shelf life. When I buy from a reputable brand, I feel more confident that the battery won’t leak or lose charge too quickly.

5. Check the Expiration Date

One thing I always inspect is the expiration or best-before date. Even if a battery is unused, it can still lose capacity over time. I prefer buying the freshest stock possible so I get the best runtime after installation.

6. Compare Packaging Options

I usually see these batteries sold in:

  • Single packs
  • Multi-packs
  • Bulk packs

If I only need one battery, I buy a single pack. But if I use them often, a multi-pack can be more economical. I just make sure the packaging keeps the batteries sealed and protected from moisture.

7. Verify Size and Dimensions

Since button cells are tiny, I always double-check the physical size. The SR626SW battery is designed to fit specific compartments, and even a slight mismatch can prevent proper contact or damage the device. I never rely on appearance alone because many button cells look almost identical.

8. Read Customer Reviews

Before I buy online, I look at customer reviews. I pay attention to comments about:

  • Battery life
  • Authenticity
  • Packaging quality
  • Whether the battery arrived charged and ready to use

If I see repeated complaints about dead-on-arrival batteries or poor packaging, I usually skip that seller.

9. Consider Storage and Safety

I like batteries that come in secure packaging, especially if I plan to store extras. Button cells are small and can be dangerous if swallowed, so I keep them away from children. I also store them in a cool, dry place to help preserve their life.

10. Balance Price with Quality

I’ve found that the cheapest option is not always the best value. A slightly higher-priced battery from a reliable brand often lasts longer and performs better. For me, it’s worth paying a little more if it means fewer replacements and better device performance.

Final Thoughts

When I buy a Button Cell SR626SW battery, I focus on compatibility, brand reputation, freshness, and value. That simple approach has helped me avoid mistakes and get better results from my devices. If I follow these steps, I usually end up with a battery that works well and lasts as expected.

Final Thoughts

I’ve found that the Sr626sw button cell battery is a small but essential power source for many everyday devices like watches, calculators, and small electronics. My key takeaway is that choosing the right replacement matters, since matching the size, voltage, and compatibility helps ensure reliable performance. I also think it’s worth paying attention to quality and shelf life so the battery lasts as long as possible.

Author Profile

Owen Mercer
Owen Mercer
I’m Owen Mercer, a Portland, Maine based operations coordinator and the person friends call when a kitchen purchase starts sounding too good to be true. Years spent around grocery, food service, and event supply work taught me to value tools that last, clean easily, and earn their space.

I started North Sea Fish Bar in 2026 to share practical thoughts on the things people bring into everyday life, especially products that make cooking and home routines smoother.

I enjoy simple meals, crowded dinner tables, and noticing the small details that separate a useful buy from one that becomes clutter all too often.