LR44 Battery: Main functions, application areas and alternative models


An LR44 battery is a small alkaline button cell battery with a standard voltage of 1.5 volts. The LR44 battery is also known by several other names, including AG13, A76, 357, and several others, depending on the manufacturer and industry standards.

The LR44 designation consists of the following key components:

  • "L" signifies alkaline chemistry.
  • "R" typically indicates a round cell battery.
  • "44" identifies a specific size and type within the LR series.

LR44 (AG13/A76/357) batteries are commonly found in various small electronic devices such as calculators, watches, toys, laser pointers, small flashlights, and medical devices. These batteries are widely available, relatively inexpensive, and provide a stable power source for low-drain devices. They are also known for their compact size and reliable performance.

When shopping for replacement batteries, it's essential to check the device's specifications to ensure that LR44 batteries are compatible with the power requirements and physical dimensions of the device. Additionally, different brand names or designations for the same type of battery can often be used interchangeably, such as LR44, AG13, A76, or 357.

LR44 Specifications

The LR44 battery, also known as AG13, A76, or 357, is a small alkaline button cell battery commonly used in a variety of small electronic devices. Here are the typical specifications for an LR44 battery:

  1. Chemistry: Alkaline
  2. Voltage: 1.5 volts
  3. Capacity: Approximately 150-180 milliampere-hours (mAh)
  4. Size: 11.6mm in diameter and 5.4mm in height
  5. Weight: Around 2.7 grams
  6. Common Equivalent Names: AG13, A76, 357, SR44, L1154, V13GA, RW82, and more

LR44 batteries are widely available and are used in devices such as calculators, watches, toys, laser pointers, small flashlights, remote controls, digital thermometers, and various other small electronic gadgets. Due to their popularity and compatibility with numerous devices, LR44 batteries are commonly stocked by electronics stores and online retailers.

When purchasing LR44 batteries, it's crucial to ensure that you are getting high-quality batteries from reputable brands to ensure optimal performance and longevity in your devices. Additionally, it's recommended to store LR44 batteries in a cool, dry place at room temperature to preserve their charge and extend their shelf life.

LR44 Characteristics

The LR44 battery, also known by other names such as AG13, A76, or 357, possesses several key characteristics that make it a popular choice for various small electronic devices. Here are some of the main characteristics of the LR44 battery:

  1. Chemistry: The LR44 battery is an alkaline battery, which means it uses an alkaline electrolyte rather than an acidic one. This chemistry provides a relatively stable voltage output over the life of the battery.

  2. Voltage: It has a nominal voltage of 1.5 volts, which is standard for many small electronic devices. The consistent voltage output makes it suitable for powering devices that require a steady power supply.

  3. Capacity: The typical capacity of an LR44 battery ranges from around 150 to 180 milliampere-hours (mAh). This capacity level is appropriate for low-drain devices that do not consume a lot of power.

  4. Size: The LR44 battery is small and compact, with dimensions typically around 11.6mm in diameter and 5.4mm in height. Its size makes it suitable for use in devices that require a slim and lightweight power source.

  5. Weight: An LR44 battery weighs approximately 2.7 grams, contributing to its portability and suitability for small devices where weight is a factor.

  6. Compatibility: LR44 batteries are widely used and are interchangeable with other equivalent battery designations such as AG13, A76, and 357. This interchangeability makes it easier to find replacements for various devices that require this type of battery.

  7. Application: LR44 batteries are commonly used in devices such as calculators, watches, toys, remote controls, laser pointers, digital thermometers, key fobs, and many other small electronic gadgets with low power consumption.

  8. Availability: LR44 batteries are readily available in stores and online, making them convenient for quick replacements when needed.

By understanding these characteristics of the LR44 battery, you can make informed decisions when selecting and using it for your electronic devices that require a reliable and compact power source.

LR44 Battery Voltage

The LR44 battery, also known as an AG13, A76, or 357 battery, typically has a nominal voltage of 1.5 volts. This voltage is standard for most alkaline button cell batteries in this size range. The consistent 1.5-volt output of the LR44 battery makes it suitable for a wide variety of low-power electronic devices such as calculators, watches, small toys, laser pointers, key fobs, and other gadgets where a stable voltage is essential for proper operation.

It's worth noting that the voltage of an LR44 battery remains relatively stable throughout its life cycle until it is depleted. This reliable voltage output makes LR44 batteries a popular choice for devices that require a consistent power source.

LR44 Battery Applications

LR44 batteries, also known as AG13, A76, or 357 batteries, find applications in various small electronic devices that require a compact and reliable power source. Here are some common applications of LR44 batteries:

  1. Calculators: LR44 batteries are commonly used to power small calculators due to their compact size and stable voltage output.

  2. Watches and Clocks: Many analog and digital watches, alarm clocks, and wall clocks rely on LR44 batteries to keep accurate time.

  3. Toys: Small electronic toys, such as musical greeting cards, remote-controlled cars, and other battery-powered toys, often use LR44 batteries.

  4. Medical Devices: LR44 batteries are used in certain medical devices like digital thermometers, glucose meters, and keychain medical lights.

  5. Remote Controls: Some small remote controls for electronic devices like garage door openers, car alarms, or small electronic gadgets are powered by LR44 batteries.

  6. Laser Pointers: LR44 batteries are commonly used in small laser pointers for presentations, teaching, and entertainment purposes.

  7. LED Flashlights: Some small LED flashlights and keychain lights use LR44 batteries for power.

  8. Key Fobs: LR44 batteries are used in key fobs for cars, garage doors, and other remote entry systems.

  9. Digital Thermometers: LR44 batteries power many digital thermometers for accurate temperature readings.

  10. Small Electronic Gadgets: Various small electronic gadgets, such as mini fans, calculators, and digital cameras that require a compact power source, may use LR44 batteries.

Due to their widespread use, availability, and compatibility with a range of devices, LR44 batteries are a popular choice for powering low-drain electronic devices that require a dependable power source in a compact form factor.

LR44 Battery Equivalents

The LR44 battery, also known by other designations such as AG13, A76, 357, and more, has several equivalent batteries that can be used interchangeably in various devices. Here are some common equivalents to the LR44 battery:

  1. AG13: AG13 is a common alternative designation for the LR44 battery. These two batteries are essentially the same and can be used interchangeably.

  2. A76: The A76 battery is another name for the LR44 and can be substituted for LR44 batteries in most devices.

  3. 357: The 357 battery is another cross-reference for the LR44 battery. It has the same size and voltage specifications.

  4. SR44: The SR44 battery is similar to the LR44 and is often used in cameras, calculators, and other electronic devices.

  5. L1154: L1154 is another equivalent designation for the LR44 battery, commonly used in various devices.

  6. V13GA: V13GA is a designation for the LR44 battery often used in different regions or by specific manufacturers.

  7. RW82: RW82 is another alternative designation for the LR44 battery and is compatible with devices that use LR44 batteries.

These equivalent batteries have the same size, voltage, and general specifications as the LR44 battery and can be used as replacements when LR44 batteries are not available. When shopping for these equivalent batteries, it is essential to ensure that they match the size and voltage requirements of the device for proper functionality and performance.

LR44 vs. 357 Battery

The LR44 and 357 batteries are closely related and often considered interchangeable due to their similarities in size, voltage, and usage. Here are some key differences and similarities between the LR44 and 357 batteries:

LR44 Battery (AG13/A76):

  • Chemistry: Alkaline
  • Voltage: 1.5 volts
  • Size: 11.6mm diameter, 5.4mm height
  • Common Applications: Calculators, watches, small electronic devices

357 Battery (SR44/SR44SW):

  • Chemistry: Silver oxide
  • Voltage: 1.55 volts
  • Size: 11.6mm diameter, 5.4mm height
  • Common Applications: Watches, cameras, medical devices


  1. Chemistry: The LR44 battery is typically alkaline, while the 357 battery is usually silver oxide. This slight chemistry difference results in a slightly higher voltage output for the 357 battery (1.55 volts) compared to the LR44 (1.5 volts).

  2. Voltage: As mentioned, the voltage of the 357 battery is slightly higher at 1.55 volts, while the LR44 operates at 1.5 volts. While this difference is relatively small, it is crucial in devices that require precise voltage levels.


  1. Size: Both the LR44 and 357 batteries share the same physical dimensions and are classified as button cell batteries with a diameter of 11.6mm and a height of 5.4mm.

  2. Compatibility: Due to their similar size and shape, the LR44 and 357 batteries are often considered interchangeable in many devices that can accept either type. However, it's important to consider the slight voltage difference when substituting one for the other in devices that are sensitive to voltage levels.

While the LR44 and 357 batteries are similar in many respects and can often be used interchangeably, it's essential to pay attention to the specific voltage requirements of your device to ensure optimal performance and compatibility.

The Difference in Specifications

  lR44 357
Battery type Alkaline Manganese   Batteries Silver Oxide
Nominal   Voltage 1.5V 1.55V
Nominal   Capacity 120mAh 150 mAh
Operating   Temperature Range -10℃ to 60℃  
Diameter   (inch) 0.457inch  
Diameter (mm) 11.6mm 11.6mm
Height (inch) 0.213inch 0.213inch
Height (mm) 5.4mm 5.4mm
IEC (JIS) LR44  
Mass (oz) 0.0705oz  
Mass (g) 2g 2.3g

LR44 Battery Manufacturer

The LR44 battery is a commonly used button cell battery that has been manufactured by various companies over the years. Several reputable battery manufacturers produce LR44 batteries, ensuring quality and reliability for consumers. Some well-known manufacturers of LR44 batteries include:

  1. Energizer: Energizer is a globally recognized battery manufacturer that produces a wide range of batteries, including LR44 alkaline button cell batteries. They are known for their high-quality and long-lasting batteries.

  2. Duracell: Duracell is another prominent battery manufacturer that offers LR44 alkaline batteries along with a variety of other battery options. Duracell batteries are known for their performance and durability.

  3. Panasonic: Panasonic is a trusted brand in the electronics industry that also manufactures LR44 batteries. Their batteries are known for their reliability and longevity.

  4. Sony: Sony is a well-known manufacturer of electronic devices, and they also produce LR44 batteries. Sony batteries are known for their quality and are widely used in various electronic products.

  5. Maxell: Maxell is a manufacturer of batteries and electronic products that offers LR44 batteries among their product range. Maxell batteries are known for their performance and reliability.

These are just a few of the notable manufacturers that produce LR44 batteries. When purchasing LR44 batteries, it is advisable to choose products from reputable manufacturers to ensure the best performance and reliability for your electronic devices.