10 Best 377A Watch Battery in 2026

Finding the right power source for your small electronics is crucial for consistent performance. The 377A watch battery is a popular choice for devices requiring reliable and compact energy solutions across various applications.

We have evaluated ten top-rated options based on capacity, shelf life, and user feedback. This list covers silver oxide and alkaline variants, ensuring you find a fit for your specific needs.

Each pick highlights key specifications and real-world reliability. Prices fluctuate often, so verify current deals before purchasing to ensure you get the best value for your investment.

Top 3 Picks for Best 377A Watch Battery

Top 10 Best 377A Watch Battery in 2026 Compared

Below is a side-by-side comparison of all ten selected products to help you quickly identify the best match for your power needs.

1. LiCB 10 Pack SR626SW – Best Overall 377A Watch Battery

4.7Editor scoreCheck price on Amazon

LiCB 10 Pack SR626SW

1.55V nominal voltage

Silver oxide chemistry

20mAh typical capacity

Three year shelf life

The LiCB 10 Pack SR626SW is a top-rated silver oxide button cell designed for watches and small electronics. It holds a 4.7 rating for reliable performance and consistent power delivery across various devices.

Pros

• High energy density
• Leak-proof construction
• Consistent voltage output
• Wide device compatibility
• Affordable per unit

Cons

• Not rechargeable
• Requires careful disposal

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This battery features high-capacity silver oxide chemistry, ensuring longer life compared to standard alkaline options. Its leak-proof technology protects your device from damage, while the three-year shelf life ensures freshness when you need it.

While it is not rechargeable and requires proper disposal methods, these are standard trade-offs for button cells. The stable voltage output prevents device damage, making it a safe choice for sensitive electronics.

Ideal for watch owners and gadget enthusiasts, this pack offers excellent value. We recommend it for anyone seeking a dependable, long-lasting power source that balances performance with affordability.

Superior Battery Chemistry

Silver oxide technology provides a steadier voltage curve than alkaline alternatives, ensuring your device runs consistently until the end of the battery's life.

Reliable Seal Integrity

The anti-corrosion design prevents leaks that could ruin your watch, offering peace of mind during daily wear or long-term storage.

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2. TXY 10pcs/Pack AG4 – Best Value 377A Watch Battery

4.6Editor scoreCheck price on Amazon

TXY 10pcs/Pack AG4

1.55V nominal voltage

Alkaline cell chemistry

20mAh capacity rating

Low self-discharge rate

The TXY 10pcs/Pack AG4 offers a budget-friendly solution for powering small electronics like toys and remotes. It carries a 4.6 rating for its cost-effective performance and reliable function in low-drain devices.

Pros

• Lowest cost per unit
• Mercury-free design
• Four year storage potential
• Stainless steel casing
• Wide model compatibility

Cons

• Shorter life than silver oxide
• Potential for leakage over time

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Constructed with a stainless steel casing for sealing performance, this alkaline battery minimizes leakage risks. It also features low self-discharge, allowing it to remain viable for up to four years when stored correctly.

While it lacks the longevity of premium silver oxide cells, it is a practical choice for devices where frequent replacements are acceptable. The mercury-free composition ensures safe handling and environmental protection during disposal.

Best suited for general household use, this pack delivers solid value. Choose it if you need an affordable, reliable power source for multiple devices without compromising on safety standards.

Long Storage Stability

Thanks to its low self-discharge rate, this battery retains its charge longer on the shelf, ensuring readiness when you finally need it.

Eco-Friendly Production

Manufactured without harmful substances like lead or mercury, this battery meets environmental standards for safe disposal and reduced ecological impact.

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3. Duracell 377/376 – Most Trusted 377A Watch Battery

4.7Editor scoreCheck price on Amazon

Duracell 377/376

1.55V nominal voltage

Silver oxide chemistry

Guaranteed four year storage

Child-secure packaging

The Duracell 377/376 is a premium silver oxide button battery trusted for its exceptional reliability. With a 4.7 rating, it stands out for its guaranteed four-year shelf life and robust performance in critical devices.

Pros

• Industry-leading brand reputation
• Four year storage guarantee
• Secure child-safe packaging
• Consistent high performance
• Wide device compatibility

Cons

• Higher price per unit
• Smaller pack sizes

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Duracell guarantees this battery will remain fresh for four years in storage, ensuring readiness for emergencies. Its child-secure packaging provides an added safety layer, making it a top choice for households with children.

Although it comes at a higher price and in smaller quantities, the assurance of quality and safety justifies the cost. The silver oxide chemistry delivers stable voltage, protecting sensitive electronics from power fluctuations.

Recommended for users prioritizing reliability and safety, this battery excels in watches and medical devices. Invest in it when you need a power source that you can trust completely.

Unmatched Shelf Stability

The four-year storage guarantee ensures you have a fresh battery ready for emergencies, eliminating concerns about expiration dates.

Advanced Safety Features

Child-secure packaging prevents accidental ingestion, offering peace of mind for parents managing batteries at home.

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4. Energizer 377/376 – Reliable Standard 377A Watch Battery

4.7Editor scoreCheck price on Amazon

Energizer 377/376

1.55V nominal voltage

Silver oxide chemistry

Five pieces per pack

Replaces SR626SW

The Energizer 377/376 is a standard silver oxide watch battery known for its dependable performance. It holds a 4.7 rating, reflecting its consistent power delivery and popularity among watch owners.

Pros

• Trusted Energizer brand
• Consistent voltage performance
• Pack of five value
• Wide availability
• Easy identification

Cons

• Standard lifespan
• Not optimal for extreme conditions

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Energizer's reputation for quality ensures this battery meets strict standards for performance. The pack of five offers good value for routine replacements, and its clear labeling makes it easy to identify on the shelf.

While it offers a standard lifespan suitable for most devices, it may not match the extended life of premium options. However, for daily use in watches and calculators, it delivers reliable results without issues.

Best for general maintenance, this battery is a solid choice for those who prefer a well-known brand. Choose it for everyday devices where consistency and ease of replacement are key priorities.

Brand Trust

Energizer is a household name in battery technology, offering assurance that this product meets rigorous quality control standards for safety and performance.

Clear Identification

Standard labeling and packaging ensure you quickly identify the correct battery type, reducing confusion during purchase or replacement.

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5. LOOPACELL 377/376 – Durable 377A Watch Battery

4.6Editor scoreCheck price on Amazon

LOOPACELL 377/376

1.55V nominal voltage

Silver oxide chemistry

Leak-proof design

Five pieces per pack

The LOOPACELL 377/376 is a versatile silver oxide battery designed for durability. It has a 4.6 rating, highlighting its robust construction and suitability for a wide range of small electronics.

Pros

• Leak-proof technology
• Wide device compatibility
• Ready-to-use packaging
• Anti-corrosion elements
• Stable power output

Cons

• Limited availability online
• Average shelf life

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Its leak-proof technology and anti-corrosion elements ensure stable power even after extended periods. The battery arrives ready to use, providing an instant power boost for devices ranging from watches to remote controls.

While availability may be slightly limited, the battery's performance justifies seeking it out. The stable output prevents voltage drops that can disrupt sensitive electronics, making it a reliable choice for everyday tools.

Ideal for users needing a balance of durability and performance, this battery fits many applications. Select it when you require a reliable power source that can withstand regular use without failure.

Robust Leak Protection

The anti-corrosion design prevents leaks that could damage your device, ensuring long-term safety even if the battery sits unused for a while.

Instant Readiness

Arriving fully charged and ready for installation, this battery eliminates wait times, providing immediate power to your devices.

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6. 10pcs 1.5V AG4 LR626 – Compact 377A Watch Battery

4.7Editor scoreCheck price on Amazon

10pcs 1.5V AG4 LR626

1.5V nominal voltage

Alkaline cell chemistry

6.8mm diameter size

10 pieces per pack

The 10pcs 1.5V AG4 LR626 is a compact alkaline button battery suitable for various small electronics. It holds a 4.7 rating for its high energy density and consistent performance in low-drain applications.

Pros

• Compact and lightweight
• High energy density
• Long lifespan
• Affordable pricing
• Easy handling

Cons

• Standard alkaline limitations
• Requires careful storage

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Despite its small 6.8mm diameter, this battery offers excellent continuous power and a long lifespan. Its lightweight design makes it ideal for devices where weight and size are critical factors for functionality.

While alkaline chemistry may not match silver oxide longevity, it offers great value for cost-sensitive projects. Proper storage in cool, dry conditions maximizes its potential and reduces the risk of premature discharge.

Best for gadgets and toys, this battery provides reliable power at a budget-friendly price. Choose it when you need a lightweight solution that delivers steady performance without breaking the bank.

Energy Density

Despite its small size, the battery packs a significant amount of energy, ensuring extended runtimes for your portable devices.

Compact Design

Its lightweight construction makes it perfect for delicate electronics that require minimal mass, such as thin watches or small sensors.

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7. LiCB 20 Pack SR626SW – Bulk Value 377A Watch Battery

4.7Editor scoreCheck price on Amazon

LiCB 20 Pack SR626SW

1.55V nominal voltage

Silver oxide chemistry

20 pieces per pack

Three year shelf life

The LiCB 20 Pack SR626SW provides a bulk solution for users managing multiple devices. It earns a 4.7 rating for its high-quality Grade A cells and dependable performance across watches and small electronics.

Pros

• Large quantity pack
• High-quality Grade A cells
• CE and ROHS certified
• Consistent power output
• Versatile compatibility

Cons

• Storage requires care
• Higher upfront cost

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This pack offers excellent value for those who need frequent replacements. Each battery meets strict quality standards, ensuring consistent voltage output and a three-year shelf life that guarantees freshness when installed.

Managing a larger quantity requires proper storage in dry conditions to maximize their lifespan. However, the cost per unit is significantly lower than buying smaller packs, making it a smart financial choice.

Ideal for households or businesses, this bulk pack eliminates the hassle of frequent ordering. Select it if you want to stock up on reliable power sources without compromising on quality or performance.

Bulk Savings

Buying in larger quantities significantly reduces the cost per unit, making it an economical choice for heavy users or frequent replacement needs.

Quality Assurance

Each battery undergoes rigorous quality checks, ensuring every unit meets high standards for safety and performance consistency.

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8. SKOANBE 10Pack SR626SW – Fresh Power 377A Watch Battery

4.6Editor scoreCheck price on Amazon

SKOANBE 10Pack SR626SW

1.5V nominal voltage

Silver oxide chemistry

Fresh 1.5V charge

Three year shelf life

The SKOANBE 10Pack SR626SW focuses on delivering fresh, reliable power for your watches. It holds a 4.6 rating for its consistent performance and clear guidelines for safe handling and installation.

Pros

• Guaranteed fresh power
• Safe handling instructions
• Multiple device compatibility
• Long battery life
• Affordable pack size

Cons

• Requires proper insertion
• Not waterproof

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Each battery arrives with a full 1.5V charge and a three-year shelf life, ensuring it performs well when you need it. The product advises against touching terminals directly to prevent short circuits and preserve battery integrity.

While installation requires care to avoid shorting, this is standard for button cells. The silver oxide chemistry ensures stable voltage output, protecting your devices from potential damage caused by power fluctuations.

Best for general use, this pack offers a straightforward, reliable solution for watch owners. Choose it if you want fresh batteries with clear safety guidelines and dependable power for everyday devices.

Fresh Power Guarantee

Batteries arrive fully charged and ready for installation, ensuring you get immediate, uninterrupted performance for your device.

Safety Guidelines

Clear instructions on handling prevent accidental short circuits, enhancing safety during installation and use.

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9. Duracell 377/376 – Premium Choice 377A Watch Battery

4.7Editor scoreCheck price on Amazon

Duracell 377/376

1.55V nominal voltage

Silver oxide chemistry

Child-secure packaging

Four year storage guarantee

The Duracell 377/376 stands out for its premium quality and safety features. With a 4.7 rating, it delivers reliable power backed by a trusted brand reputation and extensive testing for performance.

Pros

• Premium silver oxide tech
• Industry trust
• Safety packaging
• Long-term reliability
• Wide compatibility

Cons

• Pack of two only
• Higher cost per unit

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This battery offers a guaranteed four-year storage life, ensuring freshness for emergency needs. Its child-secure packaging prevents accidental access, making it a top choice for families prioritizing safety in battery storage.

Though the pack contains only two units, the quality assurance justifies the higher per-unit cost. It is designed to deliver stable power across a wide range of devices, from watches to digital thermometers.

Best for safety-conscious users, this battery provides peace of mind and consistent performance. Select it if you require a premium power source that balances long-term reliability with family safety.

Safety First

Child-secure packaging design ensures that batteries remain safely stored away from young children, reducing potential household hazards.

Brand Legacy

As a leading battery brand, Duracell brings decades of research and development to ensure consistent, high-performance results for every unit.

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10. DURNERGY SR626SW Watch – Innovative Design 377A Watch Battery

4.7Editor scoreCheck price on Amazon

DURNERGY SR626SW Watch

1.5V nominal voltage

Alkaline cell chemistry

Anti-misalignment design

10 pieces per pack

The DURNERGY SR626SW Watch battery features a unique anti-misalignment design for easy handling. It has a 4.7 rating for its stable voltage output and eco-friendly construction in alkaline button cells.

Pros

• Cuttable packaging design
• Sealed steel case
• Wide temperature range
• Mercury-free material
• Stable voltage output

Cons

• Alkaline limits capacity
• Requires proper disposal

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Each battery can be individually cut from the pack, preventing loss or misplacement during storage. The sealed steel case effectively prevents leakage, while the wide temperature range ensures performance in various environments.

Although it uses alkaline chemistry, the stable discharge curve minimizes voltage drops that could damage devices. The mercury-free construction ensures safe disposal, aligning with modern environmental standards for battery usage.

Best for practical users, this battery offers thoughtful design features that simplify everyday use. Choose it if you value convenience, reliable sealing, and eco-friendly materials in your power sources.

Anti-Misalignment Design

The individual cut lines on the packaging prevent batteries from getting lost or damaged, making storage and handling simpler.

Eco-Friendly Material

Constructed without hazardous substances, this battery ensures safe disposal and aligns with environmentally responsible practices.

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Buying Guide – How to Choose the Best 377A Watch Battery

Selecting the right 377A watch battery depends on your device's needs and how you plan to use it.

Battery Chemistry

Chemistry determines how long your battery lasts and how stable its voltage is. Silver oxide batteries offer longer life and steadier power, ideal for watches and sensitive electronics. Alkaline batteries are cheaper but may drain faster and drop voltage sooner.

Choose silver oxide for long-term reliability and alkaline for cost-sensitive or low-drain applications.

Shelf Life

If you don't use batteries frequently, shelf life matters. High-quality cells can store for three to four years without losing much charge. Look for packaging that indicates storage guarantees or freshness dates.

Prioritize longer shelf life to ensure your battery is ready when you need it.

Device Compatibility

Not all 377A batteries fit every device. Check your manual or existing battery to confirm compatibility. Many models share alternate names like SR626SW or LR626, so match the code carefully.

Verify compatibility to avoid installation issues or poor performance.

Pack Size

Pack size affects cost per unit and storage convenience. Buying in bulk reduces cost but requires proper storage to prevent discharge. Smaller packs are convenient but may cost more over time.

Choose a pack size that matches your usage rate and storage space.

Safety Features

Child-secure packaging and leak-proof technology protect your family and devices. Brands like Duracell prioritize safety in design. Look for anti-corrosion coatings and sealed casings.

Opt for safety features to prevent accidents and device damage.

Brand Reputation

Established brands invest in quality control and testing. Trusted names like Energizer and Duracell have proven track records. Lesser-known brands may save money but sometimes lack consistency.

Stick with reputable brands for reliable performance and safety.

Environmental Impact

Some batteries contain hazardous materials like mercury or cadmium. Modern standards encourage mercury-free designs. Look for eco-labels or recycling instructions before purchase.

Choose mercury-free options to minimize environmental harm.

Price per Unit

Compare cost per individual cell rather than total pack price. A $10 pack of 20 may be cheaper than a $5 pack of 10. Factor in shipping and availability when calculating total cost.

Calculate cost per unit to find the best long-term value.

How to Use and Care for Your 377A Watch Battery

Always handle batteries by their sides rather than touching the terminals directly. Skin oils can cause corrosion or short circuits. Store unused batteries in a cool, dry place away from metal objects.

When replacing a battery, remove the old one immediately and clean the contacts with a soft cloth. Ensure the new battery is oriented correctly before closing the device compartment.

Dispose of spent batteries at designated recycling centers to prevent environmental harm. Do not throw them in regular trash, as they may contain materials harmful to soil and water.

Frequently Asked Questions

Final Thoughts on Choosing the Best 377A Watch Battery

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