Best LR621 Button Batteries of 2026

Bonnie Salem Avatar
Bonnie Salem
Last Updated: Jan 22, 2026

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LR621 button batteries are small, coin-shaped batteries commonly used in various electronic devices such as watches, calculators, and remote controls. These batteries are also known as AG1, 364, or SR621SW batteries, and are typically 6.8mm in diameter and 2.1mm thick. LR621 batteries are designed to provide long-lasting power and reliable performance, making them a popular choice for many everyday gadgets. They are widely available in stores and online, and are often sold in multi-packs for convenience. Overall, LR621 button batteries are a practical and affordable option for powering small electronic devices.

At a Glance: Our Top Picks

Cotchear AG1 Coin Battery Pack Cover #TOP 1
Cotchear AG1 Coin Battery Pack
ftb score rating icon 9.8
YKM 10 Pack SR621SW 364 Silver Oxide Watch Battery Cover #TOP 2
YKM 10 Pack SR621SW 364 Silver Oxide Watch Battery
ftb score rating icon 9.7
LiCB SR621SW Button Cell Watch Batteries Cover #TOP 3
LiCB SR621SW Button Cell Watch Batteries
ftb score rating icon 9.5

Top 10 LR621 Button Batteries

#TOP 1

Cotchear AG1 Coin Battery Pack

Assorted Colors
Cotchear AG1 Coin Battery Pack Cover
Cotchear 10pcs AG1 Battery LR621 364 Watch Battery 1.55V 364 SR621SW LR621 621 LR60 CX60 Alkaline Button Cell Batteries for Watch Toys Remote

The Cotchear AG1 Coin Battery Pack includes 10 high-quality alkaline button cell batteries that are tested under strict quality control standards. With a standard voltage of 1.5V and a diameter of approximately 7.9mm, these batteries are suitable for use in a variety of devices such as watches, clocks, calculators, cameras, and more. They may also be known as 164/364/531/602/280-34/364A/CX60/D364/G1/GP364/LR60/LR621/LR621W/SB-AG/DG/SP364/SR60/SR60L/SR621/SR621SW/T/TR621/TR621SW/V364. It is recommended to wipe the battery with a dry cloth and set it properly confirming the end (+/-) before use. Keep the battery in a dark, cool, and dry place and do not throw it in the fire or attempt to recharge it.

What We Like
Includes 10 high-quality alkaline button cell batteries
Tested under strict quality control standards
Suitable for use in a variety of devices
#TOP 2

YKM 10 Pack SR621SW 364 Silver Oxide Watch Battery

YKM
364 watch battery
6.8*2.1mm
YKM 10 Pack SR621SW 364 Silver Oxide Watch Battery Cover
YKM 10 Pack 364 SR621SW Watch Battery AG1 364/363 LR621 V364 1.55V Silver Oxide Battery

The YKM SR621SW Watch Battery offers reliable, long-lasting power with its high-quality battery cells, ensuring your devices run smoothly for extended periods. This battery is designed with multiple safety features, including excellent sealing to prevent leaks and explosions, so you can use it with confidence. It’s also environmentally friendly, containing no harmful chemicals like mercury, lead, or chromium. Compatible with a wide range of devices, from watches and calculators to remote controls and hearing aids, this battery provides versatile and dependable energy for many everyday electronics you rely on.

What We Like
Long-lasting power
Multiple safety protections
Environmentally friendly
Wide device compatibility
Certified quality testing
#TOP 3

LiCB SR621SW Button Cell Watch Batteries

SR621SW
LiCB SR621SW Button Cell Watch Batteries Cover
LiCB 20 Pack SR621SW 364 164 363 AG1 Battery 1.5V Button Cell Watch Batteries

The LiCB SR621SW Button Cell Watch Batteries are a reliable and cost-effective option for those in need of a new watch battery. These batteries are tested under strict quality control standards and are CE and ROHS certified. With a full 1.5 volts charge and a shelf life of 3 years, these batteries are durable and long-lasting. They are compatible with LR621, D364, SP364, 602,164, 280-34, SB-AG/DG, SR60, SR60L, SR621, GP364, T, V364 devices. Each blister pack contains 20 batteries and comes with an 18-month warranty and friendly customer service.

What We Like
Tested under strict quality control standards and CE and ROHS certified
Full 1.5 volts charge and 3-year shelf life
Compatible with a wide range of devices
#TOP 4

Cotchear AG1 Coin Battery 10pcs/Pack

Cotchear AG1 Coin Battery 10pcs/Pack Cover
Cotchear AG1 Coin Battery 10pcs/Pack LR621 364 SR621SW 621 LR60 CX60 Alkaline 1.5V Button Cell Batteries for Watch Toy

The Cotchear AG1 Coin Battery 10pcs/Pack provides a high-quality and reliable power source for various small electronic devices, such as watches, toys, calculators, and remote controls. With a standard voltage of 1.5V and a diameter of 7.9mm, these batteries are tested under strict quality control standards to ensure their durability and longevity. They may also be known by other names, such as LR621, SR621SW, and LR60. To ensure optimal performance, users should wipe the battery with a dry cloth and properly set it with the correct polarity (+/-).

What We Like
Reliable power source for small electronic devices
Tested under strict quality control standards
Standard voltage of 1.5V and diameter of 7.9mm
#TOP 5

PKCELL SR621SW Watch Battery

PKCELL SR621SW Watch Battery Cover
PKCELL 20 Pack SR621sw Watch Battery AG1 Battery 1.5V LR621 363 364 Watch Batteries

The PKCELL SR621SW Battery offers users a reliable power source for various devices. This battery is compatible with multiple models, ensuring you have the right fit for your needs. With strict quality control measures in place, you can trust that this battery will deliver consistent performance and last for up to three years. Additionally, its environmentally friendly design contains no harmful substances like mercury or lead, making it a safe choice for both you and the planet. Whether you're powering watches or electronic toys, this battery provides the convenience you need.

What We Like
Long-lasting performance
Environmentally safe materials
Wide compatibility
Strict quality control
#TOP 6

Cotchear Alkaline Cell Batteries Set

Cotchear Alkaline Cell Batteries Set Cover
Cotchear 50pcs Alkaline Cell Batteries Assorted 1.5 Volt AG1/LR621 AG3/LR41 AG4/LR626 AG10/LR1130 AG12/LR43 AG13/LR44 Coin Batteries Set 0% Mercury

The Cotchear Alkaline Cell Batteries Set is a pack of 50 assorted 1.5 Volt batteries that includes 10pcs AG1/LR621/364, 10pcs AG3/LR41/392, 5pcs AG4/LR626/377, 10pcs AG10/LR1130, 5pcs AG12/LR43/386, and 10pcs AG13/LR44/357. These batteries are suitable for more than 80% of watches and meet most of the family's needs for button batteries. They are primarily used in many small electronics, such as thermometers, calculators, toys, laser pointers, children's books, medical devices, and more. The batteries are environmentally friendly with 0% Hg, lead, and cadmium. They also have a high energy density and long life expectancy, passing the SGS test standard and providing excellent continuous power.

What We Like
Assorted battery sizes
Long battery life
Cost-effective
#TOP 7

LiCB 10 Pack SR621SW Watch Battery

LiCB-SR621SW-10US
10 Pack
LiCB 10 Pack SR621SW Watch Battery Cover
LiCB 10 Pack SR621SW 364 Watch Battery,Long-Lasting & Leak-Proof,High Capacity Silver Oxide 1.55V Button Cell Batteries for Watch

LiCB 10 Pack SR621SW Watch Battery is a high-quality, long-lasting, and leak-proof button cell battery that is perfect for watches. These batteries are tested under strict quality control standards and are CE and ROHS certified. With a full 1.55 volts charge and a shelf life of 3 years, these batteries are durable and cost-saving. They are compatible with various watch models and come in an exact blister pack of 10 batteries. Additionally, they come with an 18-month warranty and friendly customer service.

What We Like
High-quality and long-lasting
Leak-proof and safe to use
Compatible with various watch models
Exact blister pack of 10 batteries
18-month warranty and friendly customer service
#TOP 8

DURNERGY SR621SW Watch Battery 10 Pcs

DURNERGY SR621SW Watch Battery 10 Pcs Cover
DURNERGY SR621SW Watch Battery 10 Pcs, AG1 Battery Watch Batteries 364 363, Alkaline Coin Button Cell Battery, LR621 Green Battery

The DURNERGY SR621SW Batteries offer reliable power with a stable voltage that ensures your devices run smoothly without damage. These batteries come in a sealed steel case, preventing leaks and making them safer for your gadgets. They work well across a wide temperature range, so you can trust them in various environments. Plus, they are eco-friendly since they don’t contain harmful metals like lead or mercury, allowing for easy disposal. The smart anti-misalignment design lets you remove one battery without disturbing the others, making it convenient if you don’t need to use them all at once.

What We Like
Stable voltage output
Leak-proof steel casing
Wide temperature range
Eco-friendly materials
Anti-misalignment design
#TOP 9

Cotchear Alkaline Cell Batteries Set

Cotchear Alkaline Cell Batteries Set Cover
Cotchear 30pcs Alkaline Cell Batteries Assorted 1.55 Volt AG1/LR621 AG3/LR41 AG4/LR626 AG5/LR754 AG12/LR43 AG13/LR44 Coin Batteries Set 0% Mercury

Cotchear Batteries Set offers a variety of button batteries suitable for over 80% of watches and various small electronics like thermometers, calculators, toys, and more. With an eco-friendly design containing no mercury, lead, or cadmium, these batteries provide high energy density and long-lasting power. The batteries are sealed to prevent leakage and pass SGS test standards, ensuring continuous power for your devices. Remember to store them in a dry, cool place, insert them correctly, and avoid short-circuiting for optimal performance.

What We Like
Wide compatibility
Eco-friendly
High energy density
#TOP 10

Maxell Silver Oxide SR621SW Watch Battery

SR621SW
5 Count (Pack of 1)
Maxell Silver Oxide SR621SW Watch Battery Cover
5PK Maxell Silver Oxide SR621SW Low Drain Watch Battery Replaces 1175SO, 164, 280-34, 362, 531, 602, AG1, D 364, D364, GP364, L621, LR621, R 364/31, RW 320, S621S, SB-AG/DG, SG1, SP364, SR 60, V364

This product is a button battery designed for watches. It has various model numbers including 1175SO, 164, 280-34, 362, 531, 602, AG1, D 364, D364, GP364, L621, LR621, R 364/31, RW 320, S621S, SB-AG/DG, SG1, SP364, SR 60, and V364.

What We Like
Durable and long-lasting
Compatible with various watch models
Easy to install
Buying Guide Image

The Best LR621 Button Batteries to Buy Right Now

How to Choose the Right LR621 Button Batteries

If you're looking for a reliable and long-lasting power source for your small electronic devices, LR621 button batteries may be the perfect solution. These small, round batteries are commonly used in watches, calculators, toys, and other small electronic devices. However, with so many different brands and types of LR621 batteries available, it can be difficult to choose the right one. In this article, we'll explore some important factors to consider when choosing LR621 button batteries.

Capacity

One of the most important factors to consider when choosing LR621 button batteries is their capacity. Capacity refers to the amount of energy that a battery can store and deliver. The higher the capacity, the longer the battery will last. When choosing LR621 button batteries, look for brands that offer high-capacity options. These batteries will typically last longer and provide more reliable power than lower-capacity options.

Brand Reputation

Another important factor to consider when choosing LR621 button batteries is the reputation of the brand. Look for brands that have a good reputation for quality and reliability. Some well-known brands in the LR621 battery space include Energizer, Duracell, and Sony. These brands have been in the battery business for many years and have a solid track record of producing high-quality batteries.

Cost

Cost is another important factor to consider when choosing LR621 button batteries. While it may be tempting to go for the cheapest option, low-quality batteries may not last as long or deliver as much power as higher-quality options. Look for brands that offer a good balance between cost and performance. It's also worth noting that some brands offer bulk pricing options, which can help you save money in the long run.

Compatibility

When choosing LR621 button batteries, it's important to ensure that they're compatible with your device. Some batteries may be too large or too small for certain devices, which can lead to poor performance or even damage to the device. Check the specifications of your device to ensure that the batteries you choose are the correct size and voltage.

Environmental Impact

Finally, it's worth considering the environmental impact of the LR621 batteries you choose. Look for brands that offer environmentally friendly options, such as rechargeable batteries or batteries made from recycled materials. These options can help reduce waste and minimize your impact on the environment.

In conclusion, choosing the right LR621 button batteries for your devices requires careful consideration of several factors, including capacity, brand reputation, cost, compatibility, and environmental impact. By taking these factors into account, you can ensure that you choose batteries that provide reliable, long-lasting power while minimizing your impact on the environment.

Frequently Asked Questions (FAQs)

1. What battery can replace LR621?

Long Story Short: if you need good LR621, LR60, AG1, SR621, SR621SW, SR60, 164, 364, or SG1 battery equivalent, go for a battery labeled as SR621SW (SR621 Silver-Watch) battery - it is a silver-oxide battery with stable voltage and high capacity.

2. Can I use a 377 battery instead of 364?

Can I use a 364 battery instead of 377? 364 battery feature physical dimensions of 6.8 x 2.1 mm (lust as SR621SW battery) and it is generally not compatible with 377 battery with physical dimensions of 6.8 x 2.6 mm.

3. What battery can replace 364?

364 Battery is a direct replacement for SR621SW, SR60, SR621, SB-AG/DG, 280-34, T, V364, D364, 602, S621E, GP364, AG1, AG-1, 364, L621, LR621, SG1, LR60, LR620, SW621, GP164, 364X, 364A, AG1/364A, SB-AG, E364 batteries.

4. Is an AG1 battery the same as a 364?

Description. The Energizer 364/363 Watch Battery is a silver oxide replacement for the common watch battery sizes of 364, 363, AG1 and SR621SW. As the double numbered name suggests, this button cell battery is perfectly suited to both high drain and low drain applications and will work in watches requiring either.

Editor's Notes

During our lr621 button battery research, we found 24 lr621 button battery products and shortlisted 10 quality products. We collected and analyzed 87,743 customer reviews through our big data system to write the lr621 button batteries list. We found that most customers choose lr621 button batteries with an average price of $4.73.

The lr621 button batteries are available for purchase. We have researched hundreds of brands and picked the top brands of lr621 button batteries, including Cotchear, YKM, LiCB, PKCELL, DURNERGY. The seller of top 1 product has received honest feedback from 1,452 consumers with an average rating of 4.9.

Written by
Bonnie Salem Avatar

Bonnie Salem is a stay-at-home mother with two-year-old twins and has spent almost half of her life surrounded by baby products. As a mother and a professional copywriter, she has an insightful and unique eye for researching products suitable for infants. Bonnie Salem is an expert in health and nutrition who lives with her family in New Jersey. She has over 15 years of working experience in an institute of medicine after graduating from the University of Toronto. She is highly interested in personal health and wellness.