LR44 battery introduction

What is LR44 battery?

LR44 battery is an alkaline button battery, whose battery chemical composition includes silver oxide as the positive electrode, metal zinc powder as the negative electrode, and the electrolyte is usually potassium hydroxide or sodium hydroxide.

The working principle of this battery involves a chemical reaction between zinc and silver oxide. Through the electrical energy generated by this reaction, the LR44 battery can provide reliable power support.

LR44 battery is famous for its long life and large capacity. These characteristics make it widely used in various devices and applications. Whether it is small electronic devices, calculators or some medical equipment, LR44 battery is favored for its efficient performance. Its large number of applications makes it one of the most common button batteries on the market, widely used in small electronic devices such as watches, calculators, toys, remote controls, thermometers and medical equipment. It belongs to the alkaline battery series, also commonly known as AG13, A76, etc. There are many different brands and models 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 Working principle

LR44 batteries work using alkaline zinc-manganese chemical reactions. A chemical reaction occurs between zinc (Zn) and manganese dioxide (MnO₂) inside the battery to release electrical energy.

Its 1.5V voltage is suitable for providing stable power for low-power, long-term use devices.

LR44 Battery Advantages

High energy density: Although the LR44 battery is small in size, it has a high energy density and can provide power for a relatively long time.

Wide applicability: Due to its standardized size, the LR44 battery is widely used in many electronic products.

Stability: The LR44 battery has good stability and a long storage life, suitable for long-term backup.

Low cost: Compared with other higher-power batteries, the LR44 is low in cost and suitable for low-power devices.

LR44 Battery Common applications

Watches: LR44 batteries are often used in small electronic watches to provide long-term stable power.

Calculators: Many portable calculators use LR44 batteries as power sources.

Laser pointers: Such as laser pointers, rangefinders and other devices.

Small toys: Such as electronic toys, remote controls, game devices, etc.

Medical equipment: Such as blood glucose meters, ear thermometers, thermometers, etc.

Other electronic products: For example, digital thermometers, keyboards, clocks, etc.

LR44 Battery Operating temperature

LR44 1.5v batteries are suitable for normal temperature environments, usually in the range of -20°C to +60°C. However, too low a temperature may affect the performance of the battery, especially at low temperatures, the battery capacity will decrease.

lr44 Battery Precautions

Avoid over-discharge: Although LR44 batteries have a long service life, if the battery is discharged to a lower voltage, the device will not work properly or even damage the battery.

Storage environment: To extend the storage life, the battery should be stored in a dry, cool place, avoiding high temperature or humid environment.

Avoid short circuit: The contact between the positive and negative poles of the battery may cause a short circuit, high temperature or even explosion or leakage, so be careful when using it.

7. lr44 Battery Equivalents

Since LR44 batteries are widely used, there are many brands that produce this type of battery, and there are several LR44 battery equivalent models. For example:

Top Picks for LR44 Battery Equivalents

A76 (ANSI standard name): Common in the North American market.

AG13: Many Asian regions use this designation, usually referring to alkaline button batteries that are the same as LR44.

L1154: A designation adopted by some manufacturers, fully compatible with LR44.

GPA76: Used as a logo in some toys or electronic devices.

357/303 (Silver Oxide Battery): Although the technology is different (more stable, higher capacity), it can be a direct replacement for LR44.

SR44 (Silver Oxide): The voltage is still 1.5V, suitable for devices that require higher capacity and performance.

lr44 Product Comparison

Batteries LR44 vs CR2032 vs 357

Feature	LR44	CR2032	357
Image
Battery Type	Alkaline	Lithium	Silver Oxide
Voltage	1.5V	3V	1.55V
Capacity	150mAh - 200mAh	220mAh - 240mAh	170mAh - 190mAh
Diameter	11.6 mm	20 mm	11.6 mm
Height	5.4 mm	3.2 mm	5.4 mm
Weight	1.5 g	3.0 g	1.55 g
Chemistry	Zinc Manganese (Alkaline)	Lithium	Silver Oxide
Typical Applications	Watches, calculators, toys, laser pointers	Watches, key fobs, medical devices, memory backup	Watches, cameras, hearing aids
Operating Temperature	-20°C to +60°C	-20°C to +60°C	-10°C to +60°C
Shelf Life	3-5 years	5-10 years	3-5 years
Common Replacements	AG13, A76, LR1154	CR2025, CR2016, CR2032	SR44, 357, SR45
Cost	Low	Moderate	Moderate

CR2032 is ideal for applications requiring higher voltage and longer life, such as watches and memory backup.

LR44 and 357 are generally interchangeable for low-power devices, with 357 offering slightly better performance in terms of voltage stability.

LR44 Manufacturers

The LR44 battery is produced by various manufacturers, and it is a standardized size and type that may be labeled differently by different brands.

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

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

Duracell: Another major player in the battery industry, Duracell is known for manufacturing LR44 batteries.

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

Panasonic: Panasonic, a multinational electronics corporation, is a manufacturer of LR44 batteries.

Summary

LR44 is a common small alkaline battery with high energy density and long storage life. It is widely used in small electronic devices such as watches, calculators, laser pointers, etc. Due to its low cost and stable performance, it has been widely used in many low-power devices. However, care should be taken to avoid over-discharge and improper storage when using it.

This table summarizes the differences between the two batteries in terms of size, chemical composition, performance, price, etc., to help you make a more appropriate decision when choosing.

lr44 button battery FAQs

1. What are the main uses of LR44 batteries?

LR44 is a small button battery commonly used in the following devices:

Toys: such as small electronic toys, light-emitting devices.

Laser pointers: devices with short power supply time but low power consumption.

Watches and calculators: devices with low power consumption but continuous power supply.

Medical equipment: such as thermometers and blood glucose meters.

2. What is the difference between LR44 and SR44?

LR44: It is an alkaline battery, which is economical and suitable for short-term use devices.

SR44: It is a silver oxide battery with higher capacity and more stable discharge, suitable for precision equipment such as watches and medical instruments.

Note: Both have a voltage of 1.5V and can usually be used interchangeably, but SR44 has better performance.

3.What is the difference between AG10 and LR44?

Size Difference:

AG10: Diameter: 11.6mm, Thickness: ~3.1mm.

LR44: Diameter: 11.6mm, Thickness: ~5.4mm.

Capacity:

LR44 has a higher capacity due to its greater thickness, making it suitable for devices requiring longer battery life.

Applications:

AG10: Small, low-drain devices like watches.

LR44: Higher-drain devices like toys and calculators.

4. How to safely store and handle LR44 batteries?

Storage: Store in a dry, cool environment, avoid direct sunlight and high temperatures.

Handling: Do not discard at will. It contains heavy metals and needs to be sent to a professional recycling station for disposal.

5. Are there compatible replacement models for LR44? lr44 battery replacement

There are many compatible models, including:

A76, AG13, L1154 (alkaline batteries)

SR44, 357 (silver oxide batteries)

Different devices have different requirements for battery performance, so be careful when choosing.

6. How long is the life of LR44?

Unused state: Usually maintains power for 3-5 years (depending on storage conditions).

Used state: It can be used for half a year to a year in low-power devices (such as watches); it may only last for a few hours in high-power devices (such as toys).

7. Can AA Batteries Replace LR44?

While technically possible in some cases, there are significant challenges:

Size Difference:

LR44: Diameter: 11.6mm, Thickness: 5.4mm.

AA: Diameter: 14.5mm, Length: 50.5mm.

Fitting an AA battery into a device designed for LR44 is often physically impractical.

Voltage and Capacity:

Both batteries have a nominal voltage of 1.5V, but AA batteries have significantly higher capacity, potentially causing overcurrent issues or damage.

Risk of Leakage:

AA batteries can generate higher currents than LR44, which may overheat devices or cause leakage.

8.Can 675 Batteries Replace LR44?

The LR44 and 675 batteries differ significantly, making them incompatible despite some similarities.

• Voltage Difference:LR44: Nominal voltage of 1.5V.675: Voltage is 1.4V (zinc-air) or 1.45V (alkaline).Devices designed for LR44 require a higher voltage and may perform poorly or fail with 675 batteries.
• Size Similarity:Both have an 11.6mm diameter and 5.4mm thickness, but the chemistry and voltage differences are critical for compatibility.

9.Are A76 and LR44 Interchangeable?

Yes, A76 and LR44 are equivalent and interchangeable.

Common Equivalents:

Duracell 76A, Energizer A76, and AG13 are direct equivalents of LR44.

10.Difference Between LR44 and LR41?

Size and Capacity:LR44: Diameter: 11.6mm, Thickness: 5.4mm, Higher capacity.LR41: Diameter: 7.9mm, Thickness: 3.6mm, Lower capacity.

Usage:LR44: Common in larger devices like calculators and toys.LR41: Suitable for smaller devices like watches and hearing aids.

The two are not interchangeable due to size differences.

11.Difference Between LR44 and L1154F?

LR44 and L1154F are identical in size, chemistry, and voltage. They are interchangeable and often labeled differently depending on the manufacturer.

Dimensions: Diameter: 11.6mm, Thickness: 5.4mm.

Voltage: 1.5V (alkaline).

Other Names: AG13, A76, 357.