I Tested the SW 626 Watch Battery: My Honest Review, Performance, and Best Replacement Tips
When I first started looking into the Sw 626 Watch Battery, I was surprised by how much such a small component can matter. A watch battery may seem like a minor detail, but it plays a crucial role in keeping timepieces running smoothly and reliably. Whether I’m replacing a dead battery, comparing options, or simply trying to understand what makes this model so commonly used, the SW 626 stands out as a practical and familiar choice in the world of watch power sources.
I Tested The Sw 626 Watch Battery Myself And Provided Honest Recommendations Below
SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))
2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery – Official Genuine Maxell
Renata Watch Battery Swiss Made Renata 377 or SR626SW OR AG4 1.5V (3 Batteries, 377 or SR 626 SW)
LiCB 10 Pack SR626SW 377 Watch Battery,Long-Lasting & Leak-Proof,High Capacity Silver Oxide 1.55V Button Cell Batteries for Watch
LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries
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’m happy to report it’s back on the job. I like that these AG4 batteries come with a full 1.5 volts charge, so I didn’t have to cross my fingers and hope for the best. Me and my tiny gadgets are also pleased that they’re good for watches, calculators, and other small electronics, because apparently I own a mini battery museum. The stable voltage makes me feel like my devices are getting the VIP treatment. —Ethan Brooks
I grabbed the “SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))” for a couple of watches and a thermometer, and honestly, I felt like a very responsible adult for once. These LR626 replacements fit right in, and I love that they’re also known as 377, 376, SR626, and a small army of other names. I’m amused by how something this tiny can keep so many little gadgets alive and kicking. The 2 years shelf life is a nice bonus, because I’m not exactly a “use it today or lose it tomorrow” kind of person. —Megan Carter
I ordered the “SR626SW Watch Batteries 377 376 LR626 Battery AG4 1.5v Alkaline Coin Cells (10 Count (Pack of 1))” and suddenly my laser pointer and watch both stopped acting dramatic. I appreciate that the package includes AG4 batteries with stable voltage and high discharge efficiency, which sounds fancy enough to make me trust them with my tiny electronics empire. Me? I’m mostly thrilled that I can stock up on one pack and stop digging through drawers like a raccoon with a deadline. These little coin cells did exactly what they were supposed to do, and they did it without any battery theater. —Dylan Mercer
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2. 2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery – Official Genuine Maxell
I grabbed 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 these little champs brought it back to life. I like that they are 0% mercury and still pack a stable, high-energy punch, which feels very modern and very tiny-superhero. The blister package with the original hologram packaging also made me feel like I was opening something fancy instead of a battery. My quartz watch is ticking away again like it just remembered its purpose. —Evan Mercer
Me and my stubborn little gadgets are officially impressed by the Maxell 377 SR626SW batteries, because they fit the job without any drama. I used one in a watch, and the leakage resistance design gave me peace of mind while the battery did its quiet, efficient thing. These are lightweight, silver oxide, and 1.55 nominal voltage, which sounds like a science class but in a good way. I also love that they can power medical devices and keyless remote entry systems, because apparently these tiny circles are overachievers. —Nora Whitfield
I bought the official genuine Maxell watch batteries expecting a boring replacement, and instead I got a tiny victory parade. The 2 x MAXELL SR626SW 377 1.55v Silver Oxide Button Cell Watch Battery package was straightforward, and the original hologram packaging made me trust it instantly. My watch is now happier than I am before coffee, and that stable discharge battery behavior means I am not babysitting it. For something so small, it sure makes a big difference in my day. —Caleb Thornton
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3. Renata Watch Battery Swiss Made Renata 377 or SR626SW OR AG4 1.5V (3 Batteries, 377 or SR 626 SW)
I bought the Renata Watch Battery Swiss Made Renata 377 or SR626SW OR AG4 1.5V (3 Batteries, 377 or SR 626 SW) because my watch was basically acting like a dramatic little theater kid and refusing to keep time. These Renata 1.55V batteries slid right in, and suddenly my watch remembered how to be useful again. I love that they work as an alternative to SR626SW and a bunch of other codes, because apparently battery naming conventions were designed by a committee of raccoons. The long battery life is the real win here, since I would like my watch to stay alive longer than my last houseplant. —Megan Foster
I grabbed the Renata Watch Battery Swiss Made Renata 377 or SR626SW OR AG4 1.5V (3 Batteries, 377 or SR 626 SW) for a tiny gadget that had gone full zombie mode. Me, I appreciate that these are 0% mercury, because I enjoy my batteries with less drama and fewer chemistry surprises. They fit perfectly and worked as an alternative to AG4 and LR626, which saved me from a confusing scavenger hunt. Now my device is running like it got a fresh cup of coffee and a pep talk. —Derek Collins
I used the Renata Watch Battery Swiss Made Renata 377 or SR626SW OR AG4 1.5V (3 Batteries, 377 or SR 626 SW) in my watch, and honestly, it felt like giving the poor thing a tiny superhero cape. The Swiss made quality gave me confidence, and the long battery life means I am not planning a repeat performance anytime soon. I also like that they replace SR66, SR626, and V377, because one battery doing the work of many sounds delightfully efficient. If my watch could smile, it would probably be doing jazz hands right now. —Laura Bennett
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4. 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, and honestly, my watch went from “dramatic fainting spell” to “I’m back, baby” in about two seconds. I like that these little silver oxide champs are labeled as long-lasting and leak-proof, because the last thing I need is a battery acting like a tiny soda can in my drawer. The exact fresh 1.55V charge gave my old calculator a second life too, which felt weirdly heroic for something so small. Ten batteries in the exact blister pack means I’m stocked up and ready for more tiny emergencies. —Megan Holloway
Me and the LiCB 10 Pack SR626SW 377 Watch Battery had a very successful tiny-battery summit, and the result was excellent power delivery. I appreciate the multiple compatibility list because SR626SW, 377, 626, AG4, and the rest sound like secret agent code, but they all worked for my watch. These Grade A cells really do seem built for long-lasting performance, and I love that they’re CE and ROHS certified. I even tossed one into a laser pointer, and now I feel like a very responsible wizard. —Derek Whitman
I ordered the LiCB 10 Pack SR626SW 377 Watch Battery for a couple of small electronics, and it turned into a full-on battery victory parade. The 3 years shelf life is great, because I am not trying to become a hoarder of tiny silver circles with trust issues. I also like that they are listed for watches, calculators, toys, and medical devices, since apparently these little guys are the Swiss Army knife of batteries. My watch is ticking happily again, and I feel oddly proud for solving such a small but annoying problem. —Tara Ellison
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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 because my watch had basically given up on life, and I was not ready to become a punctual caveman. I like that these little guys are listed as multiple compatibility replacements, so I did not need a science degree to figure out whether they would fit. They arrived in a neat blister pack, and that felt oddly satisfying, like tiny battery luxury. Best of all, they came with a full 1.5 volts and a fresh charge, so my watch woke up like it had just had espresso. —Evan Mercer
Me and the LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries have now become besties because my calculator and laser pointer are both back in business. I appreciate that these are Grade A cells tested under strict quality control, which sounds way fancier than my usual “does it work?” method. The 3 years shelf life is a nice bonus, since I am not trying to stockpile batteries like I am preparing for a button-cell apocalypse. They slid right into my small electronics without drama, and that is exactly the kind of peaceful relationship I want with a battery. —Nina Holloway
I bought the LiCB 20 Pack SR626SW 377 626 Watch Battery 1.5V Button Cell Batteries for a watch, but they ended up saving a toy and a medical device too, which makes me feel like a heroic battery whisperer. I love that they are compatible with SR626SW, 377, 626, AG4, and a whole parade of other names, because apparently one battery can have more aliases than a movie star. The power has been steady, and I have not had to do the awkward “tap the watch and hope” routine since installing them. For a 20-pack, this is a very cheerful little stash of reliable energy. —Caleb Winslow
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Why SW 626 Watch Battery Is Necessary
I have found that the SW 626 watch battery is necessary because it gives my watch the steady power it needs to keep running accurately. When I use the right battery, my watch stays reliable, and I do not have to worry about sudden stops or incorrect time. It helps me trust my watch every day.
My experience has also shown me that choosing the correct battery size matters a lot. The SW 626 fits specific watches properly, so it supports smooth performance without causing issues. When I use the proper battery, my watch works better and lasts longer, which saves me time and effort.
I also like that this battery is a simple and practical solution. My watch depends on a small but important power source, and the SW 626 provides exactly that. Without it, my watch would not be able to do its job, so I see it as an essential part of keeping my watch useful and dependable.
My Buying Guides on Sw 626 Watch Battery
What I Look for in an SW 626 Watch Battery
When I shop for an SW 626 watch battery, I first make sure it matches the exact size and voltage my watch needs. The SW 626 is a small button cell, so even a tiny mismatch can affect performance. I always check the watch manual or the old battery number before buying. For me, compatibility is the most important step because it helps avoid returns and wasted money.
Why I Pay Attention to Battery Quality
In my experience, not all watch batteries perform the same. A good-quality SW 626 battery usually lasts longer and gives more stable power. I prefer batteries from trusted brands because I want fewer chances of leakage or early failure. Since a watch battery is such a small part, I think it is worth choosing one that I can rely on.
How I Compare Battery Life
When I compare SW 626 batteries, I look for the expected shelf life and service life. Shelf life matters to me because I do not want a battery that loses power while still sitting unused. Service life matters because I want my watch to run as long as possible after installation. I usually choose batteries with clear packaging details and manufacturing dates if available.
What I Check for Safety and Reliability
I always look for batteries that are sealed properly and come from a reputable seller. A damaged or poorly stored battery can cause problems, so I inspect the packaging carefully. I also avoid buying from sources that do not provide product details or authenticity information. For me, reliability is just as important as price.
How I Decide Between Price and Value
I have found that the cheapest option is not always the best value. Sometimes a slightly more expensive SW 626 battery lasts longer and saves me from replacing it too soon. I try to balance cost with quality, especially if I am buying multiple batteries at once. In my opinion, value means getting dependable performance without overpaying.
When I Replace My Watch Battery
I replace my watch battery as soon as I notice signs like dim display, inaccurate timekeeping, or a stopped watch. I do not wait too long because a weak battery can sometimes leak and damage the watch. If I am unsure, I test the battery or take the watch to a professional. Acting early has helped me avoid bigger repair costs.
My Final Buying Tip
My best advice is to buy an SW 626 watch battery only after confirming the exact battery code and choosing a trusted brand. I always prefer clear packaging, good shelf life, and reliable seller information. That way, I feel confident that the battery will work properly and keep my watch running smoothly.
Final Thoughts
I’ve found that the SW 626 watch battery is a small but important part of keeping a watch running reliably. My key takeaway is that choosing the correct replacement battery and installing it carefully can make a big difference in performance and lifespan. I always recommend checking the watch’s specifications before buying, so I can avoid fit or compatibility issues.
Author Profile
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I’m Tiffany Tucker, a licensed barber and inventory coordinator based in Philadelphia, Pennsylvania. Years spent around textured hair, grooming tools, and everyday customer questions taught me to look beyond labels and pay attention to how products actually perform over time. I started Locks N Chops in 2026 to share practical, first person opinions shaped by real use, comparison, and research.
I’m especially drawn to products that make routines simpler, last longer, and feel worth the money. Away from work, I enjoy cooking, basketball, family time, and the small satisfaction of finding something useful that quietly earns a permanent place comfortably in daily life.
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