AG1 LR621 Alkaline Button Batteries
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AG1 battery, LR621 and 364/164 equivalents
The AG1 battery is a compact alkaline button cell used in many everyday electronics where a small, steady power source is required. It is commonly searched and marked as LR621, and many devices also reference compatible codes such as 364 and 164. If your old cell is stamped AG1, LR621, LR 621, 364 or 164, this category helps you quickly find the correct replacement.
AG1 alkaline button batteries are typically used in low-drain devices that need reliable 1.5V power in a very small format. The flat round shape makes them easy to install, but it is always important to check the polarity symbols in the battery compartment before use.
Where are AG1 LR621 batteries used?
Because of their compact size, AG1 LR621 alkaline batteries are popular in lightweight devices and small accessories. They are a practical choice for home, office, hobby and travel use.
- Wrist watches and small clocks
- Calculators and electronic organizers
- Mini LED lights and keychain gadgets
- Laser pointers and small remote controls
- Digital thermometers, toys and novelty electronics
- Small measuring tools and compact accessories
Before ordering, compare the code on the old battery and the instruction manual of your device. Some products list several equivalent codes, which is why AG1, LR621, 364 and 164 are often mentioned together.
How to choose the right AG1 battery
When selecting a battery AG1 replacement, start with the exact printed code on the cell. LR621 usually indicates an alkaline chemistry, while 364 can also appear as a size reference on some packaging and device lists. The key factors are diameter, height, voltage and correct fit in the battery holder.
For devices that use more than one button cell, replace all cells at the same time and avoid mixing old and new batteries. This supports more stable performance and reduces the risk of leakage caused by uneven discharge.
Why order AG1 alkaline batteries from BatteryMarket
BatteryMarket offers AG1 batteries in convenient options, including branded packs such as Uniross and Camelion. Whether you need a single replacement for a watch or a multipack for several small devices, you can compare available products in this category and choose the offer that matches your needs.
Useful buying tips
- Check for markings such as AG1, LR621, LR 621, 364 or 164.
- Confirm the device requires an alkaline button cell of this size.
- Store spare cells in a cool, dry place, away from metal objects.
- Keep button batteries out of reach of children and pets.
Tip: If the device works intermittently after replacement, clean the battery contacts gently and ensure the plus and minus sides are positioned correctly.
Explore the AG1 category above to find reliable LR621 alkaline button cells at a competitive price. Order online and keep your watches, calculators, toys and compact electronics ready for everyday use.




