LR44 and 357 are the same battery, just with different naming systems

Yes, LR44 and 357 batteries are identical. They are the same physical battery with two different naming conventions. LR44 is the IEC (International Electrotechnical Commission) designation, while 357 is the ANSI (American National Standards Institute) designation. Both refer to a 1.5-volt alkaline button cell that measures 11.6 mm in diameter and 5.4 mm in thickness.

You will see both names on packaging and in product manuals because manufacturers and retailers use whichever standard applies to their region or preference. If a device calls for a 357, you can safely use an LR44, and vice versa. The battery performs identically regardless of which label is on the package.

Key Takeaways

  • LR44 and 357 are the same 1.5-volt alkaline button cell battery with different naming standards—IEC versus ANSI.
  • You can use either name interchangeably when shopping; the battery inside the package is physically and chemically identical.
  • Both names appear on the same battery because different regions and manufacturers use different labeling systems.
  • Check your device manual or the battery compartment for either designation to know what size you need.

Why two names exist for one battery

The IEC standard, used primarily in Europe and internationally, created the LR44 designation. The "L" stands for alkaline, and "R44" identifies the specific size and shape. The ANSI standard, used in North America, assigned the number 357 to the same battery. Neither system is wrong—they straightforward developed independently before global standardization became common.

Today, manufacturers often print both names on the package to reach customers in different countries. You might see "LR44/357" or "357/LR44" on a single battery package. This dual labeling makes it easier for you to find the right battery whether you search by one name or the other.

Other names you might see for this battery

The LR44/357 battery goes by several other names depending on the manufacturer or region. You may encounter AG13, A76, or SR44 on packaging or in device manuals. AG13 is a common designation used by some Asian manufacturers. A76 is another ANSI code for the same battery. SR44 refers to a silver-oxide version of the same size, which has a slightly higher voltage (1.55 volts) and longer lifespan, though it is not a direct substitute in all devices.

When shopping, look for any of these names: LR44, 357, AG13, or A76. All four refer to the standard alkaline button cell. If your device specifies SR44 (silver-oxide), check the manual before substituting an LR44, because some devices are voltage-sensitive and may not work properly with the higher voltage.

How to identify which battery your device needs

The easiest way to find out what battery your device uses is to check the manual or the battery compartment itself. Most devices have a small diagram or text inside the battery door that lists the battery type. Look for any of the names mentioned above—LR44, 357, AG13, or A76.

If the manual is missing, you can also remove the old battery and read the markings printed on it. Take a photo of the old battery or bring it with you to the store. Battery retailers can match it visually, and the package will show all the equivalent names so you know you are buying the right one.

Cost and availability differences

LR44 and 357 batteries cost roughly the same, typically between $0.50 and $2.00 per battery depending on the brand and where you shop. Alkaline versions are widely available at drugstores, supermarkets, and online retailers. You will find them in the battery aisle under either name.

Silver-oxide versions (SR44) cost more—usually $1.50 to $4.00 per battery—but last longer and are often preferred for watches and hearing aids. If your device manual does not specify silver-oxide, stick with the standard alkaline LR44/357 to avoid compatibility issues and unnecessary expense.

Storage and safety tips

Store LR44/357 batteries in a cool, dry place away from metal objects that could cause a short circuit. Keep them in their original packaging or in a plastic battery organizer. Do not store them loose in a drawer where they might touch coins or keys.

Check the expiration date on the package before buying, especially if you are stocking up. Alkaline batteries lose charge slowly over time even when not in use. If a battery leaks inside your device, do not touch the leaked material directly—wear gloves and wipe the battery compartment clean with a dry cloth before inserting a fresh battery. Dispose of used batteries according to your local recycling program; many retailers accept old batteries for recycling.

Frequently Asked Questions

Can I use a 357 battery in a device that says LR44?

Yes. LR44 and 357 are the same battery. You can use either name interchangeably. The device will work identically with either one.

What is the difference between LR44 and SR44?

LR44 is alkaline and produces 1.5 volts. SR44 is silver-oxide and produces 1.55 volts with a longer lifespan. SR44 costs more and is better for watches and hearing aids, but check your device manual before switching—some devices are sensitive to the voltage difference.

Where can I buy LR44 or 357 batteries?

Both are widely available at drugstores, supermarkets, electronics retailers, and online marketplaces. Look in the battery aisle under either name. You can also find them at pharmacies and dollar stores.

How long does an LR44 battery last?

Lifespan depends on the device and how often you use it. In low-drain devices like calculators or small LED lights, an LR44 may last one to three years. In higher-drain devices, it may last weeks or months. Check your device manual for typical battery life.

Is it safe to mix old and new batteries in the same device?

No. Always replace all batteries at the same time, even if the device uses multiple cells. Mixing old and new batteries can cause leakage or uneven power delivery and may damage the device.