LR44 batteries work in any device designed for them, but several other battery types fit the same physical space and may work as substitutes

An LR44 is a 1.5-volt alkaline button cell battery about the size of a dime. If your device calls for an LR44, you can use another LR44. But the battery compartment will also physically fit several other types—some work fine as replacements, others will damage your device or fail quickly.

The key is understanding what voltage your device actually needs. Most devices designed for LR44 batteries tolerate a range of voltages. Some alternatives deliver the same 1.5 volts, others deliver 3 volts (which can harm low-voltage circuits), and some are rechargeable (which changes how they discharge over time).

Key Takeaways

  • LR44, A76, and AG13 are all 1.5-volt alkaline batteries that are physically identical and fully interchangeable.
  • SR44 and similar silver-oxide batteries deliver 1.55 volts and last longer in high-drain devices, but cost more and may not work in older or sensitive equipment.
  • CR2032 and other coin cells are 3 volts and will damage or destroy devices designed for 1.5-volt batteries.
  • Rechargeable LR44 equivalents exist but discharge faster than alkaline versions and may not work in devices that expect a steady voltage curve.
  • Check your device's manual or battery compartment label before substituting—the original battery type is always the safest choice.

Alkaline batteries that are truly interchangeable with LR44

LR44, A76, and AG13 are the same battery sold under different brand names and regional labeling systems. They are all 1.5-volt alkaline cells in an identical physical size. You can swap them freely without any risk to your device.

The letters and numbers refer to different naming standards. LR44 is the IEC (International Electrotechnical Commission) designation. A76 is the ANSI (American National Standards Institute) name. AG13 is used mainly in Asia and Europe. A device that works with one will work with any of the others. The price varies by brand and retailer, but they are functionally identical.

These batteries are common in watches, calculators, hearing aids, laser pointers, and small electronic toys. They typically last between 2 and 10 hours of continuous use, depending on the device's power draw.

Silver-oxide batteries (SR44, SR44W) as a longer-lasting option

Silver-oxide batteries are physically identical to LR44 but deliver 1.55 volts instead of 1.5 volts and hold that voltage much longer as they drain. An SR44 or SR44W will work in most devices designed for LR44, but not all.

The extra 0.05 volts rarely causes problems in modern devices, but older equipment or anything with sensitive analog circuits may behave unpredictably. Watches, in particular, sometimes run fast on silver-oxide batteries because the higher voltage speeds the oscillator. Check your device manual before switching—if it says "alkaline only," use alkaline.

Silver-oxide batteries cost two to three times more than alkaline LR44s but last significantly longer in high-drain devices like hearing aids. They are worth the cost if you use the device daily, but not if you use it occasionally.

Rechargeable LR44 equivalents and why they often disappoint

Rechargeable batteries labeled as LR44 equivalents exist, but they are not true replacements. Most are 1.2 volts instead of 1.5 volts, and they discharge much faster than alkaline cells—they lose charge even when not in use.

A rechargeable LR44 may work in a device designed for alkaline LR44, but the lower voltage can cause the device to behave erratically or shut off before the battery is truly empty. They are useful for high-drain devices you use constantly (like a remote control you use every day), but they are a poor fit for devices you use occasionally, like a backup flashlight or a rarely-worn watch.

If you choose a rechargeable option, buy a charger designed for button cells and keep the batteries in a cool, dry place. Rechargeable button cells self-discharge faster than AA or AAA rechargeables.

Batteries that fit but will not work or will damage your device

CR2032 and other 3-volt coin cells are the most common mistake. They are slightly larger than LR44 but will sometimes fit loosely in the battery compartment. Do not use them. A 3-volt battery in a 1.5-volt device will damage the circuit board, destroy the device, or cause a fire in rare cases.

LR1130, LR1154, and LR1155 are also 1.5-volt alkaline cells but are physically different sizes. They will not fit in an LR44 compartment, and forcing them will break the battery contact or the compartment itself.

If a battery fits loosely or requires force to install, it is the wrong size. Stop and check the label on the compartment or the device manual.

How to identify what battery your device actually needs

The safest way to know is to look inside the battery compartment. Most devices have a label printed on the inside of the cover or on the compartment itself. It will say "LR44" or "A76" or "AG13" or sometimes just a voltage like "1.5V".

If the compartment is unlabeled, check the device manual or the manufacturer's website. Search for the device model number plus "battery" or "specifications." If you cannot find documentation, use the original battery type that came with the device—that is always correct.

For devices you have owned for years and no longer have the manual, a photo of the battery compartment sent to the manufacturer's customer service usually gets a quick answer.

Cost and where to buy LR44 batteries

LR44 alkaline batteries cost between 50 cents and $2 each depending on brand and quantity. Buying a pack of 10 or more is cheaper per unit than buying singles. Most drugstores, supermarkets, and hardware stores stock them in the battery aisle.

Silver-oxide SR44 batteries cost $1 to $4 each and are less common in physical stores but widely available online. Rechargeable LR44 equivalents cost $3 to $8 per battery plus the cost of a charger, which ranges from $15 to $40.

Generic and store-brand alkaline LR44s work as well as name brands for most uses. The main difference is how long they sit on the shelf before you buy them—older stock may have lost some charge. Buy from a retailer with high turnover if you need maximum battery life.

Frequently Asked Questions

Can I use a CR2032 in place of an LR44?

No. CR2032 is 3 volts; LR44 is 1.5 volts. Using a 3-volt battery in a 1.5-volt device will damage or destroy it. The physical size is similar but not identical, and forcing it into the compartment can break the battery contact or the device itself.

Are A76 and AG13 the same as LR44?

Yes. LR44, A76, and AG13 are identical 1.5-volt alkaline batteries with different names based on regional labeling standards. You can use them interchangeably with no risk.

Will an SR44 work in a device that calls for LR44?

Usually yes, but not always. SR44 is 1.55 volts instead of 1.5 volts. Most modern devices tolerate this small difference, but older equipment or watches may run fast or behave unpredictably. Check your device manual—if it says "alkaline only," stick with LR44.

How long does an LR44 battery last?

It depends on the device. A watch may run for a year or more on one LR44. A laser pointer or high-drain toy may drain it in a few hours. Check your device manual for the expected battery life, or note when you install it and replace it when the device stops working.

Can I recharge an LR44 alkaline battery?

No. Standard alkaline LR44 batteries are not designed to be recharged and will leak or fail if you try. Rechargeable button cells exist but are sold as separate products, usually labeled as rechargeable or NiMH. They are not true LR44 replacements and work differently.