TXY AG4 377A Batteries
4.6Editor score
Ten replacement button cells
Compatible with many designations
Stainless steel sealed casing
Low self-discharge storage design
In this guide
A 377A watch battery is a small button cell used in watches and other compact electronic devices, but choosing the correct replacement requires more than matching its diameter. Chemistry, voltage, dimensions, equivalent designations, and the device manufacturer’s recommendations all help determine whether a battery will perform as intended.
We compared ten widely available 377A and 377/376 battery options using the information published for each product. The guide considers pack quantity, battery chemistry, stated voltage, shelf life, compatibility names, storage features, intended devices, and practical considerations such as leak resistance and straightforward installation.
Each pick highlights a different reason to consider it, from a larger replacement reserve to a trusted specialist brand or a compact multipack. Ratings and product details reflect the supplied listings, while availability, promotions, and prices can change, so readers should verify fit, device requirements, and current seller information before purchasing.
Top 3 Picks for Best 377A Watch Battery
LiCB SR626SW 377 Batteries
4.7Editor score
Ten silver oxide cells
Three-year stated shelf life
Wide device compatibility
Blister-packed replacement set
Energizer 377/376 Batteries
4.7Editor score
Five specialist watch batteries
Designed for 377/376 devices
Replaces SR626W and SR626SW
Compact button-cell format
Top 10 Best 377A Watch Battery in 2026 Compared
The comparison below places all ten options side by side, emphasizing the factors that determine fit and suitability: battery designation, pack quantity, chemistry, voltage, compatibility, and storage or installation details.
ProductsSpecificationsEditor scorePrice
Best Budget
TXY AG4 377A Batteries
Ten alkaline button cells
1.55V stated voltage
20mAh rated capacity
Up to four-year storage
4.6Editor score
Editor's Choice
LiCB SR626SW 377 Batteries
Ten silver oxide cells
1.55V stated voltage
Three-year stated shelf life
Blister-pack storage format
4.7Editor score
Best Premium
AG4 SR626SW Coin Cells
Ten alkaline button cells
1.5V stated voltage
Two-year stated shelf life
Multiple equivalent designations
4.7Editor score
Energizer 377/376 Batteries
Five button cells
Silver oxide watch battery
Replaces SR626W models
Replaces SR626SW models
4.7Editor score
LOOPACELL 377/376 Batteries
Five silver oxide cells
1.55V stated voltage
Leak-resistant sealed design
Wide household device use
4.6Editor score
AG4 LR626 Battery Pack
Ten alkaline button cells
1.5V stated voltage
6.8mm approximate diameter
Broad electronics compatibility
4.7Editor score
LiCB 20-Pack Batteries
Twenty silver oxide cells
1.55V stated voltage
Three-year stated shelf life
Large replacement reserve
4.7Editor score
SKOANBE SR626SW Batteries
Ten silver oxide cells
1.5V stated voltage
Three-year stated shelf life
Multiple compatibility names
4.6Editor score
Duracell 377/376 Batteries
Two silver oxide cells
Four-year storage guarantee
Child-secure blister packaging
Wide high-power device use
4.7Editor score
DURNERGY SR626SW Batteries
Ten alkaline button cells
1.5V stated voltage
Wide stated temperature range
Individually separated battery design
4.7Editor score
1. TXY AG4 377A Batteries – Best Budget Compatibility
TXY AG4 377A Batteries
Ten AG4 button batteries
1.55V operating voltage
20mAh stated capacity
Four-year storage claim
The TXY AG4 377A battery is a ten-cell alkaline button battery option rated at 4.6 stars. Its standout quality is the unusually extensive list of names associated with the battery, including 377A, 377, LR626, SR626, SR626SW, L626, LR66, SR66, and several others. That makes the listing useful for buyers who recognize their device by more than one designation.
Pros
- Broad compatibility-name list
- Useful ten-cell reserve
- Sealed stainless steel casing
- Low self-discharge design
- Mercury-free production claim
Cons
- Alkaline rather than silver oxide
- Only eight cells remain after one
- List includes several overlapping names
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The stated operating voltage is 1.55V, and each cell is listed at 20mAh. TXY also describes a low-self-discharge design with a storage life of up to four years when batteries are kept in a cool, dry environment. The physical casing is described as stainless steel with sealing designed to reduce the likelihood of leakage, while the production process is stated to exclude lead, cadmium, and mercury.
The primary trade-off is chemistry. This is an alkaline AG4-style cell rather than a silver oxide SR626SW cell. It carries a 1.55V label, but users should not treat that as permission to substitute it in every device specified for SR626SW. Some product listings explicitly identify LR626 or AG4 alkaline cells as replacements for SR626SW, yet battery chemistry can influence discharge behavior, so the device maker’s guidance remains the safer deciding factor.
This is a practical budget-oriented choice for someone replacing a 377A, LR626, or similarly labeled battery in a compatible device. The ten-pack gives a useful reserve for multiple devices or future replacements. It is especially appealing to buyers who prioritize broad labeling, a sealed case, and a larger number of cells, while keeping the device-specific chemistry requirement in mind.
Broad Compatibility Labels
The long list of equivalent and related names helps narrow down the right replacement, including 377A, 377, LR626, SR626SW, LR66, and SR66. It does not override a device manufacturer’s chemistry requirement, so shoppers should still confirm the exact battery named in the device manual or battery compartment.
A Useful Replacement Reserve
Ten cells allow a buyer to service more than one compatible device or retain spares for future needs. Storing unused cells in a cool, dry place and avoiding damage to the terminals helps preserve their stated storage characteristics.
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2. LiCB SR626SW 377 Batteries – Best Overall Versatility
LiCB SR626SW 377 Batteries
Ten silver oxide cells
1.55V operating voltage
Three-year stated shelf life
Ten-cell blister package
The LiCB ten-pack combines the specific SR626SW designation with silver oxide chemistry, a 1.55V rating, and a 4.7-star customer rating. It is a strong general recommendation because it directly addresses the most recognizable version of a 377 watch battery while also listing numerous related equivalents for broader matching.
Pros
- Direct SR626SW designation
- Strong 4.7-star rating
- Long stated shelf life
- Leak-proof product claim
- Many compatible device types
Cons
- Small pack creates less spare reserve
- Some compatibility labels overlap
- Silver oxide may cost more
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Its compatibility list includes SR626SW, 377, 626, SR626, LR66, LR626, AG4, 377A, 626SW, V377, and several 377/376 variations. LiCB describes the batteries as suitable for watches, calculators, toys, laser pointers, children’s books, and medical devices. The listing also states that the cells undergo quality-control testing and carry CE and RoHS certification, with a stated shelf life of three years.
The chemistry makes this a more natural fit for equipment that specifically calls for SR626SW or silver oxide. The pack is advertised as leak-proof, but correct handling remains important. Users should avoid short-circuiting the terminals, confirm polarity during installation, and store unused cells properly. Buyers should also recognize that compatibility lists can include related designations rather than universally interchangeable battery chemistries.
This is the option to shortlist first when a device specifies SR626SW, 377, or 377A and the buyer wants ten cells in one convenient package. The combination of silver oxide chemistry, clear voltage information, a three-year shelf-life claim, and broad device coverage makes it a versatile choice for watches and other small electronics.
Chemistry That Matches Watch Specifications
Silver oxide is the defining feature here. It aligns closely with the SR626SW wording in the product name, making this pack easier to compare with batteries intended specifically for watches and other devices that favor stable button-cell output.
Organized Storage and Handling
The blister pack keeps the ten cells together and makes it easier to retain unused replacements. Keeping them away from moisture, extreme heat, conductive objects, and physical damage helps protect both the cells and the devices in which they are stored.
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3. AG4 SR626SW Coin Cells – Best Clear Compatibility Guidance
AG4 SR626SW Coin Cells
Ten alkaline coin cells
1.5V operating voltage
Two-year stated shelf life
Extensive model-name list
This AG4 SR626SW coin-cell pack has a 4.7-star rating and combines an alkaline 1.5V specification with a long compatibility list. The listing names SR626SW, SR626, SR66, 626SW, AG4, 377A, 377, 376, D377, G4, GA4, GP377, V377, L626, LR626, and LR66 among its recognized designations.
Pros
- Highly rated 4.7 stars
- Clear installation polarity guidance
- Broad equipment application list
- Convenient ten-cell quantity
- Detailed storage instructions
Cons
- Two-year shelf-life claim
- Alkaline chemistry despite SR626SW name
- Generic compatibility terminology
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The product is presented as suitable for watches, clocks, thermometers, calculators, toys, children’s books, laser pointers, and medical devices. Its stated shelf life is two years, and the listing emphasizes stable voltage and high discharge efficiency. For installation, it recommends wiping the cell with a dry cloth and confirming the positive and negative ends before placing it correctly.
Its most noticeable trade-off is the mismatch between some of the broad naming language and the explicit alkaline description. A product can use SR626SW and other familiar labels while describing its actual chemistry as alkaline, so a buyer should distinguish between a model number included for recognition and the chemistry required by the device. The shorter shelf-life statement also trails several silver oxide competitors.
Despite those caveats, this is an appealing option for someone who values clear handling instructions, a useful ten-pack, and a generous list of devices with which the cells may be used. It is best for equipment whose manual permits AG4 or LR626 alkaline batteries, or for a buyer who has independently confirmed that the device can use this chemistry.
Helpful Polarity and Care Instructions
The recommendation to wipe the battery with a dry cloth and verify polarity is especially useful because button cells are easy to install backward. A dry, clean contact area also helps reduce corrosion and maintains a reliable connection between the battery and its compartment.
Convenient Multi-Device Supply
Ten cells are enough to replace batteries in several compatible items or maintain a rotating spare supply. The listing’s broad device range makes the pack appealing for households using more than one watch, calculator, thermometer, or other small electronic accessory.
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4. Energizer 377/376 Batteries – Best Specialist Brand Choice
Energizer 377/376 Batteries
Five button cells
Energizer specialist brand
377 and 376 designation
Replaces two SR626 models
The Energizer 377/376 five-pack is a concise specialist-brand option with a 4.7-star rating. Its naming follows the combined 377/376 format used for a familiar family of watch batteries, which can make the product easier to identify when a manual or replacement chart lists that designation.
Pros
- Recognizable specialist battery brand
- Strong 4.7-star rating
- Clear 377/376 device matching
- Simple five-cell package
- Specified SR626W compatibility
Cons
- Five cells limit spare supply
- Fewer listed application examples
- No detailed shelf-life figure
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The product information identifies it as an audio/video power supply in button-cell form and explicitly says it replaces SR626W and SR626SW batteries. That focused compatibility statement is useful for owners who know their device requires one of those specific models. A five-cell pack is straightforward for a household with one or two watches or for a buyer who prefers a smaller reserve than a ten-pack.
Compared with the longer listings in this roundup, the Energizer description offers fewer details about chemistry, shelf life, and specific applications. That makes the product information less extensive, though it does not diminish the value of a clear model designation and specialist brand identity. Buyers who require detailed electrical specifications should verify them on the package or current listing.
This is a strong recommendation for a buyer who prefers a well-known battery specialist and already knows that the device calls for a 377/376, SR626W, or SR626SW cell. It is less suitable for someone seeking the largest replacement reserve or extensive compatibility guidance, but it offers an uncomplicated option for common watch-battery replacement.
A Recognized Specialist Selection
The Energizer name gives this list a brand-led alternative to the longer generic-model listings. Buyers who already trust the brand or want a straightforward specialist-battery purchase can focus on confirming the required model in their device.
Simple Fit Confirmation
The explicit SR626W and SR626SW replacement language provides a concise compatibility check. Checking the open battery compartment, device manual, or printed diagram before opening the package helps prevent an unnecessary mismatch.
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5. LOOPACELL 377/376 Batteries – Best Leak-Resistant Multi-Device Pack
LOOPACELL 377/376 Batteries
Five silver oxide cells
1.55V operating voltage
Leakproof technology claim
Anti-corrosion construction
The LOOPACELL five-pack is a silver oxide option rated at 1.55V and 4.6 stars. It is listed under several familiar designations—377/376, SR626W, and SR626SW—giving buyers several ways to cross-reference it against the battery type named on a device.
Pros
- Explicit silver oxide chemistry
- Clear 1.55V voltage
- Leak-resistant product design
- Wide household device compatibility
- Ready-to-use battery claim
Cons
- Only four stars and six tenths
- Five-cell quantity is modest
- No precise shelf-life figure
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Its standout feature is the described leakproof technology and anti-corrosion construction, both of which are especially relevant in tightly fitted watch compartments. The cells are advertised as ready to use and as providing high power, long life, and reliable performance. Intended applications include wristwatches, toys, decorations, remote controls, mini radios, car keys, and digital scales.
The trade-off is that the pack contains only five batteries, so buyers with several devices may need multiple packs. It also does not provide a specific shelf-life period in the supplied information. Although the listing calls for premium-quality batteries, the chemistry and device applications are described more concretely than the storage timeline, making that detail less easy to compare.
This pack suits someone who wants silver oxide cells with explicit leak-resistance messaging and a versatile household application list. It is especially relevant for someone replacing several 377/376-style watch batteries and wanting to keep spares for compatible toys, remotes, or other small devices.
Leak Protection for Tight Compartments
The listed leakproof construction addresses an important concern with button cells installed in compact, enclosed devices. It cannot eliminate all handling risks, but selecting a battery with explicit leak-resistance features is sensible when the compartment has little room for electrolyte leakage.
One Pack, Several Device Types
The device list extends beyond watches to toys, decorations, remote controls, mini radios, car keys, and scales. This makes the five-cell format more versatile than a single-watch-only purchase for households that recognize multiple compatible accessories.
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6. AG4 LR626 Battery Pack – Best Broad Household Compatibility
AG4 LR626 Battery Pack
Ten alkaline button cells
1.5V operating voltage
6.8mm approximate diameter
Wide electronics device range
This ten-pack of AG4 LR626 alkaline batteries has a 4.7-star rating and one of the broadest device lists in the comparison. It is marketed for watches, calculators, laser pointers, cameras, clocks, computers, games, camcorders, remote controls, electronic instruments, voice recorders, LED lights, and other electronic appliances.
Pros
- Highest practical pack quantity
- Detailed dimensional reference
- Very broad device compatibility
- Clear safety and storage warnings
- Strong 4.7-star rating
Cons
- Alkaline chemistry may not fit all
- Many overlapping model names
- No stated shelf-life duration
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The listing states a 1.5V output and an approximate diameter of 6.8mm, or 0.27 inches. It also provides a long set of associated names, including 177, 376, 377, 565, 377A, AG4, D377, G4, GA4, GP377, L626, LR626, LR66, SR626, SR626SW, SR66, and V377. This makes it useful when the required model is written in several ways.
Its main limitation is the same one associated with many alkaline alternatives: the broad model-name list should not be interpreted as proof that every chemistry will meet every device’s requirements. Some devices that accept AG4 or LR626 may specify silver oxide for operating characteristics. The package also does not provide a clear shelf-life figure, although it gives useful warnings about heat, polarity, disposal, and short circuits.
This is a strong option for buyers who need several cells for a variety of compatible electronics and value a dimensional reference and an extensive model list. It is best for devices whose documentation explicitly accepts AG4, LR626, or the applicable alkaline equivalent.
Useful Dimensional Cross-Check
The stated approximate diameter gives buyers an additional way to compare the battery with the replacement cell. Dimension matching is helpful, but it should complement—not replace—checking the full model and chemistry printed in the device compartment.
Warnings That Support Safer Installation
The listing emphasizes correct polarity, short-circuit avoidance, cool dry storage, and safe handling. These are sensible precautions for small button cells, which can be affected by conductive objects or damaged casings even when stored away from the device.
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7. LiCB 20-Pack Batteries – Best Maximum Replacement Reserve
LiCB 20-Pack Batteries
Twenty silver oxide cells
1.55V operating voltage
Three-year stated shelf life
Twenty-cell blister package
The LiCB 20-pack is the largest quantity among the ten products compared, giving it a distinct advantage for households or offices that replace button cells regularly. It uses silver oxide chemistry, carries a 1.55V specification, and has a 4.7-star rating.
Pros
- Largest cell quantity available
- Silver oxide watch-battery chemistry
- Three-year stated shelf life
- Broad compatibility list
- Consistent pack organization
Cons
- Excess cells may remain unused
- Requires suitable storage conditions
- Larger blister package footprint
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The same broad compatibility framework appears as on the smaller LiCB pack, including SR626SW, 377, 626, SR626, LR66, LR626, AG4, 377A, 626SW, and V377. The listing identifies watches, calculators, toys, laser pointers, children’s books, and medical devices as typical applications. Cells are described as quality-controlled, CE and RoHS certified, and supplied with a stated three-year shelf life.
The obvious trade-off is that twenty cells may be more than a single-device buyer needs. Unused batteries still require proper storage, and a larger package is less convenient to carry than a ten-cell or five-cell pack. As with the other LiCB option, shoppers should confirm the actual chemistry expected by the device rather than relying only on a broad model-name list.
For buyers managing several watches or compatible electronics, the twenty-cell format is the most practical reserve in the roundup. It reduces the need for repeat purchases while retaining the useful characteristics of silver oxide chemistry, explicit voltage information, and a stated shelf life.
A Reserve for Multiple Replacements
Twenty cells can cover several devices and leave unused batteries for future service. This makes the pack especially useful for watch owners, collectors, or households that already know which compatible equipment they want to maintain.
Silver Oxide for Watch Applications
The stated silver oxide chemistry and SR626SW naming make this a more targeted watch-battery option than a general-purpose alkaline alternative. Checking the device’s specified chemistry before purchase preserves that advantage.
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8. SKOANBE SR626SW Batteries – Best Compact Ten-Cell Option
SKOANBE SR626SW Batteries
Ten SR626SW button cells
1.5V operating voltage
Three-year stated shelf life
Wide model compatibility
The SKOANBE 10Pack is a compact button-cell option with a 4.6-star rating. Its title names SR626SW, 377, LR626, and AG4, while the supplied details also mention 626, SR626, 377A, V377, and 626SW as compatible model names.
Pros
- Balanced ten-cell quantity
- Direct 377A compatibility naming
- Three-year shelf-life statement
- Useful terminal-handling warning
- Strong compatibility coverage
Cons
- Only five cells after one use
- Detailed application list is limited
- No leak-resistance detail supplied
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Each battery is stated to deliver 1.5V and have a three-year shelf life. The product is described as fresh and intended to provide long-lasting power, with watches, toys, and small electronics identified as suitable uses. A particularly useful instruction warns buyers not to touch the positive and negative terminals directly because doing so can create a short circuit.
The main limitation is that the supplied description is shorter than those of many competitors. It offers less detail about specific supported device categories, leakage protection, and operating conditions. Buyers who need highly specific technical guidance may need to consult the package or manufacturer, while those already familiar with the correct model will find the essential fit information presented directly.
This is a sensible middle ground for someone who wants ten cells rather than five but does not need a twenty-cell inventory. Its direct model naming, three-year storage statement, and practical handling warning make it easy to shortlist when the required battery type is already known.
Avoiding Terminal Short Circuits
Handling the edges rather than the flat faces reduces the chance of conductive residue or moisture bridging the terminals. It is a simple habit that helps protect loose cells as well as batteries waiting to be installed.
Balanced Pack Quantity
Ten cells provide a practical balance between maintaining spares and avoiding an unnecessarily large purchase. The pack works well for repeated watch changes or a household with multiple compatible small electronics.
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9. Duracell 377/376 Batteries – Best Trusted Two-Cell Purchase
Duracell 377/376 Batteries
Two silver oxide cells
Four-year storage guarantee
Child-secure packaging
Multiple equivalent model names
The Duracell 377/376 two-count pack combines a familiar specialist brand with silver oxide chemistry and a 4.7-star rating. It is aimed at users replacing a single watch battery or keeping one spare, rather than building a broad household inventory.
Pros
- Recognized major battery brand
- Four-year storage guarantee
- Child-secure blister packaging
- Extensive equivalent-model list
- Wide range of device applications
Cons
- Smallest pack in comparison
- Only two replacement cells
- Premium brand positioning
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Its standout feature is the stated four-year storage guarantee. Duracell also describes nearly child-secure packaging that is difficult to open without scissors, a useful safety characteristic given the size and potential ingestion risk of button cells. Equivalent battery types include SR66, SR626W, 377, SR626, 376, D376, D377, V377, and SR626SW.
The trade-off is quantity. Two cells are fewer than every other pack in the comparison, so buyers with several watches or many compatible devices will need more than one purchase. Another consideration is that the pack focuses on a particular specialist product rather than offering the broad model-name and application lists seen from generic manufacturers. Buyers who prefer minimum excess inventory may find that a benefit rather than a drawback.
This option is best for an individual watch owner who recognizes the 377/376 or SR626 family and values brand familiarity, long-term storage, and child-secure packaging. It is less appropriate for a bulk replacement project, but it remains one of the most focused choices for a straightforward watch-battery replacement.
Long-Term Storage Assurance
The four-year storage guarantee provides a clear basis for keeping a spare on hand. As with every battery, proper storage still matters, so the cells should remain in their packaging and away from moisture, excessive heat, and conductive materials.
Child-Secure Packaging
Packaging that requires scissors helps reduce the chance that a curious child will independently remove a button cell. Caregivers should still keep batteries and packaging out of reach and dispose of used cells promptly through an appropriate local route.
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10. DURNERGY SR626SW Batteries – Best Individually Separated Design
DURNERGY SR626SW Batteries
Ten alkaline button cells
1.5V operating voltage
Individually separable design
Wide stated temperature range
The DURNERGY ten-pack has a 4.7-star rating and a distinctive organization feature: individual cells can be separated along perforated lines. That makes it easier to remove one battery without disturbing the rest of the pack or having loose cells shift around during storage.
Pros
- Individually separated spare storage
- Useful wide temperature claim
- Sealed steel case design
- Wide compatibility-model list
- Extensive device application range
Cons
- Alkaline chemistry needs confirmation
- Unusual disposal guidance
- Detailed shelf-life period absent
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The product is described as an alkaline AG4 button cell with 1.55V output. Its listing states that the sealed steel case helps prevent liquid leakage and gives a usable temperature range from -4°F to 140°F. It also lists compatible names including SR626SW, SR626, LR626, L626, S626E, SR66, LR66, V377, D377, and GP377, with applications spanning watches, laser training tools, small flashlights, clocks, thermometers, car remotes, garage-door remotes, battery-operated tea lights, and pocket watches.
The chemistry remains the key qualification: a device explicitly requiring silver oxide may not be the right application for an alkaline replacement, even when several related numbers are listed. The listing also says the used battery can be placed directly in household waste, but local disposal rules should always take priority. No specific shelf-life period is provided in the supplied information.
This is a practical pick for a buyer who wants convenient, individually separated storage and a broad range of compatible small devices. It is especially attractive for keeping several replacement cells organized in a drawer, toolkit, or travel kit while avoiding loose-button-cell clutter.
Cleaner Spare-Battery Organization
Separating one cell at a time prevents unused batteries from becoming loose in a drawer or compartment. It also makes it simpler to keep the remaining cells together and reduces the chance of terminal contact with metal objects.
Sealed Case and Temperature Claims
The sealed steel construction and stated -4°F to 140°F use range suggest attention to both leakage and operating conditions. Actual device requirements still govern safe use, particularly in environments where temperature changes are frequent or extreme.
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Buying Guide – How to Choose the Best 377A Watch Battery
Choosing the correct 377A watch battery starts with the exact model and chemistry printed on the device, followed by size, voltage, pack quantity, storage life, and handling needs. The most useful purchase is not necessarily the one with the longest description or largest pack; it is the one that satisfies the equipment manufacturer’s specifications without leaving unnecessary extras.
Confirm the Exact Battery Designation
Begin with the model printed beside the battery compartment, in the device manual, or on the device itself. A 377A designation can appear alongside related names such as 377, 376, SR626, SR626W, SR626SW, LR626, AG4, and LR66. Those names help narrow the search, but compatibility lists may combine models that differ in chemistry or discharge behavior. Treat the device manufacturer’s stated model and chemistry as the controlling requirements, especially for watches, medical devices, and other sensitive electronics.
Match Silver Oxide or Alkaline
Silver oxide and alkaline are the two principal chemistry descriptions represented in this roundup. A silver oxide cell is often the closer match for a watch or device that specifically requests SR626SW, while AG4 or LR626 alkaline cells may be suitable for products that specify those types. Voltage labels alone do not establish chemistry, and the one-tenth-volt difference between common 1.5V and 1.55V labels should not be used to bypass a device-specific requirement. Matching the named chemistry is the safer first step.
Check Dimensions and Compartment Fit
Button cells that look nearly identical can differ slightly in diameter and height, which may matter in a tight compartment or beneath a retaining clip. Some listings provide approximate measurements, while others rely on standardized model names. A measured comparison of the old cell and the replacement can help, but model verification remains more dependable because nominal diameter specifications are not always printed. The battery should sit flat without being forced, and the compartment cover should close without pressure on the cell.
Consider Shelf Life and Storage
Freshness matters because button cells gradually lose stored capacity. Stated shelf lives across these products range from two to four years, with some listings giving no specific period. Longer shelf-life claims are useful when maintaining emergency spares, but storage conditions still influence condition. Keep unused batteries in their original packaging in a cool, dry place away from direct sunlight, heat, moisture, and conductive objects. Rotate older cells to the front of a maintenance kit so they are used before newer replacements.
Evaluate Pack Quantity
Pack sizes in this comparison range from two to twenty cells. A two-count is suitable for one watch and a spare, while five- and ten-cell packs suit multiple devices or regular maintenance. Twenty cells offer the largest reserve but may be excessive for a single replacement. Consider the number of compatible devices you maintain, how frequently batteries are replaced, and whether you want a compact emergency kit. Buying too few can lead to repeated purchases, while buying too many creates more cells that must be stored correctly.
Look for Leak-Resistance Features
Leak resistance is particularly important in watches and other enclosed devices where a leaking cell could damage the battery compartment or nearby components. Several products in the roundup explicitly advertise leakproof or sealed construction. Such claims do not replace careful handling, so avoid crushing, puncturing, disassembling, or short-circuiting the cells. Store them away from keys, coins, tools, and other metal objects, and remove a spent battery promptly when it no longer powers the device correctly.
Review Intended Device Applications
The listed applications provide a useful secondary check. Common uses include watches, clocks, calculators, thermometers, toys, remote controls, laser pointers, mini radios, cameras, small flashlights, medical devices, and children’s books. A product that explicitly names your device is generally a more comfortable choice than one offering an extremely broad list with no relevant examples. Nevertheless, application lists are not permission to ignore chemistry or device instructions, particularly for medical and high-drain equipment.
Plan for Safe Installation and Disposal
Button-cell replacement calls for clean hands, a dry work surface, and careful attention to polarity. Avoid touching the positive and negative terminals directly, especially when several loose cells are nearby. Keep children from access to new and used batteries, and use packaging designed to resist opening where available. Local battery-disposal rules can vary, so follow municipal guidance rather than assuming every cell belongs in ordinary household waste.
How to Use and Care for Your 377A Watch Battery
Before replacing a battery, confirm the model and chemistry in the device manual or battery compartment. Prepare a clean, dry workspace, and avoid touching the replacement cell’s flat faces or terminals. If the new cell arrives loose, hold it by its edge so grease or moisture from your fingers does not interfere with the contact surfaces.
Remove the old battery carefully, particularly if the compartment has a tight retaining clip or pressure plate. Note the orientation of the original cell, then install the replacement in the same direction with the correct side facing the positive contact. Do not force the cell or allow the retaining mechanism to press excessively on it. Replace the cover and check that the device powers on normally.
Store unused cells in their original packaging in a cool, dry place away from direct sunlight, excessive heat, moisture, and metal objects. Never recharge a button cell, dispose of one in fire, or attempt to repair it. Remove a spent battery promptly, keep it away from children and pets, and follow local battery-disposal rules.
Frequently Asked Questions
Is a 377A battery the same as an SR626SW battery?
A 377A battery is commonly associated with the 377/376 and 626 family, and many 377A searches also surface SR626SW products. However, the full designation can identify different chemistries, so a matching model number alone does not guarantee identical discharge behavior. Check the chemistry specified by the device manufacturer and use the battery type named in the manual or on the original battery whenever possible.
Can I use an AG4 or LR626 battery instead of an SR626SW?
Some sellers describe AG4 or LR626 alkaline cells as replacements for SR626SW, and compatible devices may operate with them. The safer approach is to follow the device maker’s required chemistry. If the manual does not clarify the matter, contact the manufacturer or a qualified service provider before substituting one chemistry for another.
How many 377A watch batteries should I buy?
Buy one for the immediate replacement and another if you want an emergency spare. Larger packs make sense for multiple watches, calculators, toys, remotes, or other compatible devices. The products compared here range from two to twenty cells, so pack quantity should reflect how many devices you regularly maintain rather than an arbitrary maximum.
How should I store unused 377A button batteries?
Keep unused cells in their original packaging, in a cool and dry location away from direct sunlight, heat, moisture, and conductive metal objects. Do not remove them from the package and scatter them loose, because contact between terminals can short-circuit a cell. Keeping spares organized also makes it easier to rotate older batteries before newer ones.
Why does my watch battery compartment show several model numbers?
Manufacturers and sellers often list several equivalent or related designations to make identification easier. A compartment marked with 377/376 may be associated with SR626W, SR626SW, and related 626 numbers. Treat those names as clues, then confirm the specified chemistry and physical fit in the device manual before buying.
Can I recharge a 377A watch battery?
No. The button cells in this roundup are primary batteries and should not be placed in a charger. Attempting to recharge them can cause heat, leakage, or damage. Replace a depleted cell with a new battery of the specified type and dispose of the old one according to local rules.
Is a leaking 377A battery dangerous to a watch?
It can damage the watch and nearby components because electrolyte can corrode metal contacts and the compartment. If leakage is visible, avoid touching the fluid, remove the battery only with appropriate care, and inspect the compartment. If the device is valuable or the leak has spread, seek professional service rather than continuing to use the watch.
Does a higher battery rating guarantee a longer service life?
No. The numeric customer rating reflects feedback associated with the listing, not a direct measurement of runtime in every device. Actual performance depends on the device, battery chemistry, storage history, and usage pattern. Check that the battery matches the device requirements, then use the rating only as a general indicator of customer experience.
Final Thoughts on Choosing the Best 377A Watch Battery
The LiCB SR626SW ten-pack stands out as the most versatile all-around recommendation, combining silver oxide chemistry, a 1.55V rating, three-year shelf life, broad compatible-device information, and a 4.7-star rating. The TXY ten-pack is the budget-oriented alternative, with extensive naming, a 20mAh capacity statement, and sealed construction. For a specialist-brand purchase, the Energizer 377/376 five-pack offers a focused replacement choice for SR626W and SR626SW devices.
Your priority should begin with exact device compatibility, not pack size or marketing language. Confirm the model and chemistry, check the compartment fit, and choose a pack quantity that matches how many compatible devices you maintain. If you need only one immediate replacement and value a major brand, Duracell’s two-pack is focused and storage-friendly; if you service many devices, the LiCB 20-pack offers the largest reserve.
Finally, verify the current product listing, package details, seller information, and any available promotions before ordering, since availability and prices can change. A battery that looks identical may still have a different chemistry or shelf-life profile, so the device manufacturer’s instructions remain the most important guide when making the final choice.