LR44 Battery Equivalents:What You Need to know

The LR44 battery is an alkaline coin cell, characterized by its battery chemistry that includes silver oxide as the positive electrode, metallic zinc powder as the negative electrode, and typically uses potassium hydroxide or sodium hydroxide as the electrolyte.

The battery operates based on a chemical reaction between zinc and silver oxide, which generates electrical energy to provide reliable power support.

 

Known for their long life and large capacity, LR44 batteries are widely used in various devices and applications. They are commonly found in small electronic devices, calculators, and certain medical equipment due to their efficient performance. This widespread usage makes LR44 batteries one of the most common button batteries available on the market.

 

LR44 Battery Specifications

 

Battery Type: Alkaline Button Cell

Operating Temperature Range: -10°C to 60°C

Weight: 2 grams

Chemistry: Alkaline and Manganese Dioxide (MnO2)

Manufacturer: Murata Electronics

Series: LR44R

Rated Voltage: 1.5 V

Capacity: 150mAh

Dimensions: 0.46" Diameter x 0.21" Height (11.6mm x 5.4mm)

Discharge Rate: 300µA

 

LR44 Battery Equivalents

 

In the battery world, different types of batteries have unique chemistries and uses.

 

Alkaline batteries are recognized for their stable performance, using zinc oxide as the negative electrode and manganese dioxide as the positive electrode. They typically have a nominal voltage of 1.5V and an endpoint voltage of 1.0V, though their voltage decreases over time. Examples include LR44, 76A, AG13, LR1154, A76, and L1154.

 

Silver-Oxide batteries provide a very constant voltage, usually around 1.55V, making them ideal for devices that need stable power. Examples include SR44W, SR44, SR44SW, 157, and 357.

 

Zinc-air batteries are known for their relatively low voltage and large capacity, typically ranging from 1.4-1.45V. They are mainly used in devices like hearing aids that require large capacity but relatively low voltage. Examples include 675, Blue Tab, ZA675, and PR44.

 

Finally, mercury oxide batteries are no longer used because they contained mercury. They had a slightly lower voltage of 1.35V and were sometimes labeled MR44 or MR1154. Due to environmental and health concerns, this type of battery has been withdrawn from the market.

 

Different batteries also vary in capacity. Alkaline batteries generally have a capacity of 110-130mAh, silver oxide batteries range from 150-200mAh, zinc-air batteries offer 600-700mAh, and mercury oxide batteries were 180-200mAh.

 

Duracell 76A:

The Duracell 76A is equivalent to LR44 and is often used interchangeably.

 

Energizer A76:

Energizer A76 is another direct equivalent to LR44, sharing the same size and voltage.

 

AG13:

AG13 is a generic designation for LR44-equivalent batteries, commonly found in watches, calculators, and other small electronic devices.

 

303:

The 303 battery has the same physical size as LR44, but it is typically a silver oxide battery. Silver oxide batteries generally offer a longer lifespan and are ideal for low-drain applications like watches.

 

 

SR44 and SR44SW:

 

These batteries are also silver oxide and share the same physical dimensions as LR44. They offer stable power for devices with low energy consumption, like watches and small electronic gadgets.

 

357:

 

The 357 battery is similar in size to LR44 and can be either a silver oxide or alkaline battery. While it may be compatible with LR44 devices, the differing chemistry could impact performance and longevity.

 

Characteristics	Alkaline	Silver-0xide	Zinc Air	Mercuny-Oxide
Chemistry	Alkaline	Silver-Oxide	Zinc Air	Mercury-Oxide
Nominal Voltage	15V	1.55V	1.4-1.45V	1.35V
End-Point Voltage	1V	12V	1.05-1.1V	1.1V
Notes	Voltage drops over time	Very constant voltage	Slightly lower voltage, large capacity; mostly used in hearingaids	Slightly lowervoltage,contains mercury; not in use anymore
Typical Labels	LR44, 76A,AG13,LR1154，A76, L1154	SR44W, SR44.SR44SW, 157,357, 303, SG13,AG13, S76, A76.SR1154	675, Blue Tab,ZA675,PR447003ZD	MR44,MRT154
TypicalCapacity	110-130mAh	150-200 mAh	600-700 mAh	180-200 mAh

 

LR44 Manufacturers

 

The LR44 battery is made by various manufacturers and is a standardized size and type that may have different labels depending on the brand.

 

Murata Electronics: A prominent electronic components manufacturer, Murata Electronics is associated with the LR44 battery series.

 

Energizer: A globally recognized battery manufacturer, Energizer frequently produces LR44 batteries under its own brand.

 

Duracell: Another leading player in the battery industry, Duracell is known for its LR44 batteries.

 

Sony: Sony, a major electronics company, is also involved in the production of LR44 batteries.

 

Panasonic: Panasonic, a multinational electronics corporation, manufactures LR44 batteries.

 

LR44 Battery Applications

 

Medical Equipment

 

LR44 batteries are commonly used in the medical field, powering devices such as glucose meters and hearing aids. Their high capacity and reliability make them an ideal power source for medical devices that require precise measurement and continuous use.

 

Remote Control Devices

 

LR44 batteries serve as a primary power source for remote controls, including those for TVs, audio systems, and other home electronic devices. Their long life and consistent energy output ensure the stability and durability of remote controls.

 

Toys and Small Electronic Equipment

 

LR44 batteries are widely used in various toys and small electronic devices, including electronic games, small toys, and other entertainment appliances. Their compact size and reliable energy output make them an ideal choice for these devices.

 

LED Small Lamps and Handheld Lamps

 

Due to the relatively high power provided by LR44 batteries, they are often used in LED small lights and handheld lamps. The stability and long life of these batteries ensure that lighting fixtures deliver consistent brightness over extended periods.

 

Digital Small Devices

 

Beyond calculators, watches, and digital thermometers, LR44 batteries are also commonly used in other small digital devices, such as timers and digital notepads. These devices often require a lightweight and efficient power source, which the LR44 battery provides.

 

Audio Equipment

 

LR44 batteries are frequently used in small audio devices, including mini speakers, personal music players, and voice recording devices. Their stable power output is essential for maintaining audio quality.

 

Discharge Characteristics

 

Can I replace LR44 with AA?

 

While it is technically possible to use AA batteries as a substitute for LR44 batteries in some cases, there are important considerations and potential issues to be aware of.

 

Size Difference

 

LR44 batteries are significantly smaller than AA batteries. The LR44 measures approximately 11.6mm in diameter and 5.4mm in thickness, whereas AA batteries are about 14.5mm in diameter and 50.5mm in length. Fitting AA batteries into a device designed for LR44 may be difficult, and the larger size might prevent proper contact.

 

Voltage Difference

 

LR44 batteries typically have a voltage of 1.5 volts, which is the same nominal voltage as AA batteries. However, the capacity (mAh) of AA batteries is much higher than that of LR44 batteries. This could potentially result in overvoltage issues, which might damage the device or affect its performance.

 

Polarity and Connection

 

Connecting AA batteries to a device intended for LR44 may require modifications to the battery compartment to ensure proper electrical contact. Additionally, it is crucial to ensure the correct polarity to avoid potential damage.

 

Risk of Leakage

 

Alkaline AA batteries have a higher capacity and can deliver a higher current than LR44 batteries. This can lead to increased heat generation, which may cause leakage or damage to the device.

 

Can a 675 Battery Replace a LR44?

 

The 675 battery and LR44 battery differ in size and voltage, making them not direct replacements for each other.

 

LR44 Battery:

 

Voltage: 1.5 volts

Dimensions: 11.6mm diameter, 5.4mm thickness

 

675 Battery:

 

Voltage: 1.4 volts (zinc-air) or 1.45 volts (alkaline)

Dimensions: 11.6mm diameter, 5.4mm thickness (zinc-air), or 14.5mm diameter, 5.4mm thickness (alkaline)

 

Although the dimensions of the 675 battery match those of the LR44, the voltage difference is significant. The LR44 operates at 1.5 volts, while the 675 battery usually operates at a lower voltage (either 1.4 volts for zinc-air or 1.45 volts for alkaline). This voltage difference may impact the performance of devices designed specifically for the 1.5-volt LR44 batteries.

 

If a device explicitly requires a 1.5-volt LR44 battery, it's best to use the correct voltage to ensure proper functionality. Using a 675 battery with a lower voltage may lead to reduced performance or improper operation of the device.

 

Does 377 Replace LR41?

 

Yes, a 377 battery can be used as a replacement for an LR41 battery. Both are coin cell batteries with similar dimensions (7.9mm in diameter and 3.6mm in thickness) and have a nominal voltage of 1.5 volts. The primary difference is their chemistry: LR41 batteries are usually alkaline, while 377 batteries are silver oxide.

 

Silver oxide batteries like the 377 often offer a longer lifespan and more stable voltage over time compared to alkaline batteries. The higher capacity and voltage stability of silver oxide batteries make them suitable for applications requiring a steady and longer-lasting power source.

 

Therefore, if your device originally used an LR41 battery, replacing it with a 377 battery should work, and you might benefit from the extended lifespan provided by the silver oxide chemistry.

 

Will A76 Battery Work for LR44?

 

A76, also known as LR44, is a widely used button cell battery size, and these designations are often used interchangeably. The Duracell 76A, Energizer A76, and AG13 are all equivalent to LR44 and can be used interchangeably in many devices that require LR44 batteries.

 

Is the LR44 Battery the Same as LR41?

 

LR44 and LR41 batteries differ in size and capacity.

 

LR44 Battery:

 

Diameter: 11.6mm

Thickness: 5.4mm

Equivalent to: 357, A76, AG13, and others

Commonly Used In: Watches, calculators, small electronic gadgets

 

LR41 Battery:

 

Diameter: 7.9mm

Thickness: 3.6mm

Equivalent to: 392, SR41W, AG3, and others

Commonly Used In: Small electronic devices such as watches, calculators, and hearing aids

 

Although both LR44 and LR41 batteries are button cell batteries with a nominal voltage of 1.5 volts, they differ in size and are not interchangeable in devices designed for a specific size.

 

What is the Difference Between LR44 and L1154F Batteries?

 

LR44 and L1154F batteries are essentially the same type of button cell batteries with a nominal voltage of 1.5 volts and share several alternative designations.

 

LR44:

 

Diameter: 11.6mm

Thickness: 5.4mm

Other Names: AG13, A76, 357, G13, and more

Chemistry: Alkaline

L1154F:

 

Diameter: 11.6mm

Thickness: 5.4mm

Other Names: LR44, LR1154, AG13, 157, and more

Chemistry: Alkaline

 

LR44 and L1154F have the same physical dimensions and are equivalent in terms of voltage and general usage. Depending on the manufacturer or brand, these batteries might be labeled differently, but they are interchangeable for most applications.

 

What is the Difference Between AG10 and LR44?

 

The primary difference between AG10 and LR44 is in thickness, with LR44 being thicker than AG10. Due to its larger size, LR44 typically has a higher capacity compared to AG10. Both batteries have a nominal voltage of 1.5 volts and are used in various small electronic devices.

 

AG10:

 

Diameter: 11.6mm

Thickness: Approximately 3.1mm

Chemistry: Alkaline

Other Names: LR1130, LR54, 189, 389, and more

 

LR44:

 

Diameter: 11.6mm

Thickness: Approximately 5.4mm

Chemistry: Alkaline

Other Names: AG13, A76, 357, G13, and more