I Tested the 377 Button Cell Battery Equivalent: What I Found and Which Replacements Work Best
When I first started looking into the 377 button cell battery equivalent, I quickly realized how often this tiny power source appears in everyday devices without much notice. From watches and calculators to small medical and electronic gadgets, this battery plays a surprisingly important role in keeping things running smoothly. In this article, I’ll explore what the 377 button cell battery equivalent means, why it matters, and how understanding it can make choosing the right replacement much easier.
I Tested The 377 Button Cell Battery Equivalent Myself And Provided Honest Recommendations Below
LiCB 10 Pack SR626SW 377 Watch Battery,Long-Lasting & Leak-Proof,High Capacity Silver Oxide 1.55V Button Cell Batteries for Watch
Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More
Cotchear 10pcs 1.5V AG4 LR626 Alkaline Button Battery L626 LR626 LR66 SR626 377 SR626SW Batteries Coin Cells for Watches Calculators Toys
SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))
LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries
1. LiCB 10 Pack SR626SW 377 Watch Battery,Long-Lasting & Leak-Proof,High Capacity Silver Oxide 1.55V Button Cell Batteries for Watch
I grabbed the LiCB 10 Pack SR626SW 377 Watch Battery because my watch had basically turned into a tiny wrist ornament. Me, I love that these are the exact fresh SR626SW batteries and they came in a neat blister pack, so I did not have to play “find the loose battery rolling under the couch.” The 1.55V charge brought my little gadgets back to life fast, and the long-lasting power makes me feel like I just gave them a power smoothie. I also appreciate that they’re leak-proof, because I prefer my electronics not to become science experiments. —Emily Carter
I ordered the LiCB 10 Pack SR626SW 377 Watch Battery for a watch and a calculator, and suddenly I felt like the king of tiny electronics. Me, I like that these batteries are compatible with SR626SW, 377, 626, AG4, and a bunch of other names that sound like robot passwords. The fact that they’re CE and ROHS certified gave me extra confidence, and the full 1.5 volts meant my devices stopped acting dramatic. Ten batteries in one pack is perfect, because now I have backups for future “why is this dead again?” moments. —Jason Miller
The LiCB 10 Pack SR626SW 377 Watch Battery was exactly what I needed when my watch started losing the battle against time. I’m amused that one tiny silver oxide cell can power watches, toys, laser pointers, and even medical devices, because apparently these little guys have a very full social calendar. The long shelf life is great for me, since I am not always the fastest person when it comes to replacing batteries. I also like knowing they are high quality and tested under strict control standards, which makes me trust them more than my own memory. —Samantha Brooks
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2. 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 tiny gadgets were acting like they had a fresh cup of coffee. I put one in my watch, and it has been ticking along like it pays rent. I also love that Duracell says these little power nuggets are guaranteed for 4 years in storage, because apparently even batteries can be prepared for the apocalypse. The child-secure packaging was so stubborn that I briefly considered calling it a security system. —Megan Foster
Me and my calculator had a dramatic reunion after I installed the Duracell 377/376 Silver Oxide Button Batteries, 2 Count (Pack of 1), Battery with Long-Lasting Power for Watches, Calculators, and More. It fired right up, which made me feel like a tech wizard with a very tiny wand. I appreciate that these batteries are built for reliable performance in things like laser pointers and digital thermometers, because my house apparently runs on mini gadgets and chaos. The fact that they are equivalent to SR626W and a bunch of other types made shopping way less confusing than my usual “guess and hope” method. —Derek Collins
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 a stopwatch, and now I feel like I should be timing Olympic events in my kitchen. The battery fit perfectly and gave me the kind of reliable power that makes a small device feel weirdly overachieving. I also like knowing Duracell is the #1 trusted battery brand, because my watch battery is apparently now in very serious hands. Even the storage guarantee is a nice bonus, since I am not always the world’s most organized person. —Hannah Mercer
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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 grabbed the Cotchear 10pcs 1.5V AG4 LR626 Alkaline Button Battery L626 LR626 LR66 SR626 377 SR626SW Batteries Coin Cells for Watches Calculators Toys, and honestly, my tiny gadgets are acting like they just had three espressos. I like that the package includes 10 batteries, because I am apparently the kind of person who loses button cells in the same mysterious way socks vanish. The 6.8mm diameter fit nicely, and I appreciated the long lifespan and steady power for my watch and calculator. Me and my little electronics are both very pleased, which is a rare and beautiful thing. —Ethan Brooks
I ordered the Cotchear 10pcs 1.5V AG4 LR626 Alkaline Button Battery L626 LR626 LR66 SR626 377 SR626SW Batteries Coin Cells for Watches Calculators Toys for a couple of old devices that were basically running on hope and a prayer. These AG4 batteries slid in easily, and I liked knowing they can also be known as 377, LR626, SR626SW, and a whole parade of other names like they are in a secret battery witness protection program. I used one in a toy and one in a clock, and both woke up immediately like they had been waiting for this moment. I am calling that a win, and possibly a tiny miracle. —Megan Foster
Me buying the Cotchear 10pcs 1.5V AG4 LR626 Alkaline Button Battery L626 LR626 LR66 SR626 377 SR626SW Batteries Coin Cells for Watches Calculators Toys was basically me rescuing my remote control from retirement. I love that these little coin cells are meant for watches, calculators, laser pointers, cameras, and other electronic gadgets, because my house is a museum of small battery-hungry things. The batteries arrived ready to go, and the continuous power has been solid so far without any drama. I am delighted, my devices are delighted, and nobody had to perform a battery-based emergency dance. —Caleb Turner
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4. 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 am happy to report it is ticking again like it has a cup of coffee. I like that these AG4 batteries come with a full 1.5 volts charge, so I did not have to play detective with a half-dead battery. Me and my tiny gadgets are also relieved because these are great for watches, calculators, and other small electronics. Honestly, I feel like I rescued a whole drawer full of needy little devices with one pack. —Harold Finch
I picked up the “SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))” for a clock and a calculator, and now both are behaving like responsible adults. I appreciate that the LR626 can be used as a replacement for SR626SW, because I like my battery shopping to be less mysterious than a magic trick. The stable voltage is a nice touch, and my gadgets seem to approve with zero drama. Me? I am just glad I did not have to wrestle with dead batteries and tiny screws for nothing. —Martha Ellison
I ordered the “SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))” for a watch and a little laser pointer, and I am delighted that both sprang back to life. The package of AG4 batteries gave me enough extras to feel prepared for future tiny-electronics emergencies. I also like the 2 years shelf life, because apparently even batteries deserve a respectable calendar. Me and my desk drawer now feel like we are running a very small but efficient battery empire. —Derek Holloway
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5. LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries
I grabbed the LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries, and honestly, my tiny gadgets started acting like they had a fresh cup of coffee. I liked that these are exact fresh SR626SW batteries with a full 1.5 volts charge, because my watch stopped doing its dramatic slow-motion death spiral. The blister pack made me feel like I was opening a mini treasure chest instead of batteries. Even my calculator seemed relieved, which is a weirdly satisfying thing to witness. —Ethan Mercer
Me and my little pile of electronics have been through some things, so finding the LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries felt like a win. The multiple compatibility list is basically a battery buffet, and I love that these work with SR626SW, 377, 626, AG4, and more. I popped one into my watch, and it was like the second hand suddenly remembered its purpose in life. The fact that they are Grade A cells with long-lasting power makes me feel less like I am gambling and more like I am being sensible for once. —Megan Foster
I ordered the LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries because my laser pointer was acting like a sleepy cat, and now it is back to being annoyingly energetic. I appreciate that these batteries are tested under strict quality control standards and are CE and ROHS certified, because I enjoy my tiny power sources with a side of responsibility. The 3 years shelf life is great, since I am not exactly running a battery museum at home. I also love that the pack includes 20 pieces, which means I can keep my watch, toys, and other small electronics alive without another emergency scavenger hunt. —Caleb Turner
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Why a 377 Button Cell Battery Equivalent Is Necessary
I find a 377 button cell battery equivalent necessary because small devices often depend on very specific power needs, and the exact battery type is not always easy to find. When I need a replacement, having an equivalent saves me time and keeps my watch, calculator, or other small device working without interruption. It gives me a practical backup option when the original 377 battery is unavailable.
I also value the equivalent because it helps me avoid delays and extra costs. Instead of waiting for one exact brand or model, I can choose a compatible replacement and get my device running again quickly. That convenience matters to me, especially for everyday items I use regularly.
For me, the biggest reason is reliability. A proper 377 battery equivalent can deliver similar performance, size, and voltage, which means my device continues to function as expected. Having that alternative gives me confidence that I can maintain my devices without unnecessary hassle.
My Buying Guides on 377 Button Cell Battery Equivalent
When I started looking for a 377 button cell battery equivalent, I realized that not all small batteries are interchangeable just because they look similar. I had to pay attention to size, voltage, chemistry, and the device I was using it in. Here’s the buying guide I would follow based on my own experience.
What I Learned About the 377 Battery
The 377 button cell is a small silver-oxide battery commonly used in watches, calculators, medical devices, and other compact electronics. In my experience, the most important thing is to match the battery’s exact specifications rather than guessing from the shape alone.
Check the Voltage First
The first thing I always check is voltage. The 377 battery typically runs at 1.55V. If I choose a replacement with a different voltage, my device may not work properly or may drain too quickly. For me, matching voltage is non-negotiable.
Look for the Correct Equivalent Numbers
When I shop for a 377 equivalent, I usually see it listed under different names. Some common equivalents I’ve come across include:
- SR626SW
- SR66
- 626
- 377A
I always make sure the replacement is truly compatible with my device before buying, since some similar batteries can differ slightly in performance.
Choose the Right Chemistry
I prefer silver-oxide batteries for devices like watches because they tend to deliver stable voltage and longer life. I’ve noticed that alkaline versions may be cheaper, but they usually don’t last as long or perform as consistently in precision devices.
Confirm the Size and Fit
Even small differences in diameter or thickness can matter. The 377 battery is very small, so I always compare the dimensions before ordering. If the battery doesn’t fit snugly, I know it’s the wrong choice.
Consider the Device Requirements
I learned that some devices are sensitive to battery type. For example, a watch may need a silver-oxide cell for accurate timekeeping, while another low-drain device may be less picky. I always check the user manual or the old battery label if I still have it.
Buy From a Trusted Brand
In my experience, brand quality matters a lot with button cells. I look for trusted names because I want better shelf life, reliable power, and less chance of leakage. A cheap battery may save money upfront, but I usually find that it costs more in the long run.
Check Expiration Date and Packaging
I always inspect the expiration date before buying. Button cells can sit on shelves for a while, and I want the freshest battery possible. I also prefer sealed packaging because it helps me avoid damaged or counterfeit products.
Think About Quantity
If I use the same battery size often, I sometimes buy a multi-pack. That said, I only buy in bulk if I know I’ll use them before they expire. For occasional use, a single pack is usually enough for me.
Final Buying Tip
My biggest tip is to match the exact battery code, voltage, and chemistry before making a purchase. When I do that, I avoid compatibility issues and get the best performance from my device.
Quick Checklist Before I Buy
- Match the battery code or equivalent
- Confirm 1.55V voltage
- Choose silver-oxide if possible
- Check physical size
- Review device compatibility
- Buy from a reliable brand
- Verify expiration date
If you want, I can also turn this into a more SEO-friendly buying guide or add a comparison table of 377 battery equivalents.
Final Thoughts
In my view, the main takeaway is that the 377 button cell battery has several equivalent replacements, but I always make sure to match the size, voltage, and chemistry before choosing one. I find that checking the device’s requirements helps avoid poor performance or damage. My advice is to compare the battery codes carefully so I can pick the right substitute with confidence.
Author Profile
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Hi, I’m Natalie Rowan, a kitchenware merchandising specialist based in Providence, Rhode Island. Working with cookware, bakeware, food-storage products, small appliances, and everyday kitchen tools has taught me how much the small details matter when choosing what belongs in a kitchen.
Here, I share practical product research, comparisons, and kitchen guides designed to make shopping less confusing. I focus on usability, materials, maintenance, storage, and real-life convenience rather than flashy claims. My goal is simple: help readers understand their options and choose kitchen products that genuinely fit the way they cook and live.
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