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What Battery Is the Same As an LR44?

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On June 24, 2024
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What battery is the same as an LR44?

The LR44 battery is a commonly used alkaline button cell with several equivalents, including AG13, A76, and SR44. Understanding these equivalents is essential for ensuring compatibility in devices like watches, calculators, and toys. Each equivalent may have slight differences in chemistry and performance, which can affect their suitability for specific applications.

What are the equivalent batteries for LR44?

The LR44 battery has several equivalent options, including AG13, A76, 357, 303, and SR44. These batteries are interchangeable due to their similar dimensions (11.6 mm diameter x 5.4 mm height) and voltage specifications (1.5V for alkaline and 1.55V for silver oxide), making them suitable replacements in various devices.

These include:

  1. AG13
  2. A76
  3. 357
  4. 303
  5. SR44 (silver oxide)

These batteries share similar dimensions and voltage specifications, making them suitable replacements in most devices that require an LR44.

Equivalent Battery Voltage Chemistry Type Common Applications
AG13 1.5V Alkaline Watches, calculators, toys
A76 1.5V Alkaline Watches, remote controls
357 1.5V Silver Oxide Cameras, medical devices
303 1.5V Silver Oxide Toys, small electronics
SR44 1.55V Silver Oxide Watches, cameras

How do LR44 and SR44 batteries differ?

While both the LR44 and SR44 batteries serve similar functions, they have key differences:

  1. Chemistry: The LR44 is an alkaline battery, while the SR44 is a silver oxide battery.
  2. Voltage: The SR44 typically has a nominal voltage of 1.55V, slightly higher than the 1.5V of the LR44.
  3. Performance: The SR44 generally offers better performance in low-drain applications due to its flatter discharge curve and higher capacity.

These differences make the SR44 a preferred choice for devices requiring consistent power over time.

Feature LR44 SR44
Chemistry Alkaline Silver Oxide
Voltage 1.5V 1.55V
Capacity Lower Higher

Here are some key points to note:

  • AG13 vs SG13: AG13 refers to ‘alkaline G13,’ while SG13 denotes ‘silver-oxide G13’ batteries. However, manufacturers sometimes label silver-oxide batteries with both SG13 (correct) and AG13 (less accurate) to emphasize compatibility with AG13/LR44/LR1154 batteries.
  • Battery code prefixes:
    • ‘L’ indicates an alkaline coin cell.
    • ‘S’ denotes a silver oxide coin cell.
    • ‘P’ signifies a zinc-air coin cell.
    • ‘M’ or ‘N’ denotes a mercury-oxide coin cell, although these are no longer in use due to the presence of mercury.
  • Electrolyte indicators:
    • If the battery code after the digits contains ‘P,’ it indicates a battery with potassium hydroxide electrolyte.
    • If it contains ‘S,’ it signifies a battery with sodium hydroxide electrolyte.
  • Organic electrolytes:
    • If the battery code after the digits doesn’t contain ‘P’ or ‘S,’ it likely contains an organic electrolyte.
  • Compliance with standards:
    • If the battery code after the digits contains ‘W,’ it adheres to the IEC 60086-3 watch batteries standard.

What applications commonly use LR44 batteries?

The LR44 battery is widely used in various small electronic devices due to its compact size and reliable performance:

  1. Watches: Commonly found in quartz watches.
  2. Calculators: Used in many handheld calculators.
  3. Toys: Frequently used in small electronic toys.
  4. Laser Pointers: Powering handheld laser devices.
  5. Medical Devices: Utilized in some medical equipment like thermometers.

This versatility makes it a staple in many consumer electronics.

What is the voltage and capacity of an LR44 battery?

The typical specifications for an LR44 battery are as follows:

  • Voltage: 1.5 volts
  • Capacity: Approximately 150 to 200 mAh

These specifications make it suitable for low-drain devices that require steady power over extended periods.

Specification Value
Voltage 1.5V
Capacity 150 – 200 mAh

Why is it important to know battery equivalents?

Knowing battery equivalents is crucial for several reasons:

  1. Compatibility: Ensures that you can find suitable replacements when specific batteries are unavailable.
  2. Performance Optimization: Different chemistries can affect device performance; knowing equivalents helps select the best option.
  3. Cost Efficiency: Understanding alternatives may lead to cost savings by allowing users to choose less expensive substitutes without sacrificing quality.

This knowledge empowers consumers to make informed decisions about their battery needs.

Can you recharge an LR44 battery?

No, the LR44 battery is not designed to be rechargeable. Attempting to recharge alkaline batteries can be dangerous and may lead to leakage or rupture. For applications requiring rechargeable options, consider using rechargeable lithium or nickel-metal hydride (NiMH) batteries that fit your device’s specifications.

Summary of Specifications

Battery Type Diameter (mm) Height (mm) Voltage (V) Chemistry
LR44 11.6 5.4 1.5 Alkaline
AG13 11.6 5.4 1.5 Alkaline
A76 11.6 5.4 1.5 Alkaline
357 11.6 5.4 1.55 Silver Oxide
SR44 11.6 5.4 1.55 Silver Oxide

These batteries are widely used in small electronic devices such as watches, calculators, toys, and medical equipment due to their compact size and reliable power output

LR44 Batteries Cross Reference Chart

The following cross-reference chart provides information on some of the most popular LR44, SR44, and 675 battery models, along with their key features and specifications:

Battery Datasheet
 Chemistry

Nominal and Cutoff Voltages

 Capacity

Discharge Current

 Operating Temperature

Annual Self-Discharge Rate
Duracell 675 Zinc Air

1.45V, 1.1V

 625 mAh, 620Ω @21°C down to 1.1V

–

 0°C to 50°C

4 years (unactivated) @21°C
Duracell 76A/LR44 Alkaline

1.5V, 0.9/1.2V

 130 mAh, 6k8Ω @20°C down to 1.2V

–

 -10°C to +60°C

<10% @20°C
Duracell D303/D357 Silver Oxide

1.55V, 0.9/1.2V

 170 mAh, 6k8Ω @20°C down to 0.9V

~0.229 mA @1.55V 6k8Ω @20°C

 0°C to +60°C

<10% @20°C
Energizer 357/303 Silver Oxide

1.55V, 1.2V

 150 mAh, 6k8Ω @21°C down to 1.2V

0.204 mA @1.39V @21°C

 –

~2% @20°C
Energizer 675 Zinc Air

1.4V, 1.05V

 575 mAh, IEC-STD at 15/5 mA @21°C down to 1.05V

–

 –

–
Energizer A76 Alkaline

1.5V, 0.9V

 175 mAh, 6k8Ω @21°C down to 0.9V

0.191 mA @1.30V @21°C

 –

–
Energizer 357/303 Silver Oxide

1.55V, 1.2V

 150 mAh, 6k8Ω, @21°C, down to 1.2V

204μA @1.39V 6k8Ω

 –

~2% @20°C
Eurobatt AG13 LR44 Alkaline

1.5V, 0.9V

 130 mAh, 1.0 kΩ @20±2°C down to 0.9V

0-10 mA

 –

–
muRata LR44 Alkaline

1.5V, 0.9V

 150 mAh, down to 0.9V

~0.3 mA @1.50V 4k7Ω @23°C

 -10°C to +60°C

–
muRata SR44 Silver Oxide

1.55V, 1.2V

 155 mAh, down to 1.2V

~0.3 mA @1.55V 4k7Ω @23°C

 -10°C to +60°C

–
Rayovac 303/357 Silver Oxide

1.55V, 1.2V

 –

~0.22 mA @1.55V 6k8Ω @20°C

 -10°C to 65°C

10 years @20°C
Rayovac 675 Zinc Air

1.45V, 1.05V

 ~535 mAh, IEC-STD at 15/5 mA down to 1.05V

–

 -10°C to 50°C

4 years (unactivated) @21°C
Renata 303 Low Drain Silver Oxide

1.55V, 1.2V

 175 mAh, 8k25Ω @20°C down to 1.2V

~0.189 mA @1.55V 8k25Ω @20°C

 -10°C to 60°C

<5% @20°C
Renata 357 High Drain Silver Oxide

1.55V, 1.2V

 190 mAh, 5k62Ω @25°C down to 1.2V

~0.272 mA @1.55V 5k62Ω @20°C

 -10°C to 60°C

<10% @20°C
Renata ZA675 Zinc Air

1.45V, 1.05V

 660 mAh

–

 0°C to +45°C

<5% annually unactivated @20°C
Varta LR44 Alkaline

1.5V, 0.9V

 155 mAh, 5k6Ω @20°C down to 0.9V

0.265mA

 -10°C to +65°C

–

As observed, although nominal and cutoff voltages are generally similar across these batteries, nominal capacities vary, often influenced by the conditions under which these capacities were measured.

Industrial News

The market for button cell batteries continues to evolve with advancements in technology and chemistry. Manufacturers are increasingly focusing on producing more efficient silver oxide alternatives like the SR series, which provide longer-lasting power for critical applications such as medical devices and precision instruments. As consumer demand grows for reliable power sources in compact forms, understanding these alternatives becomes essential for both manufacturers and consumers alike.

Redway Power Insight

“Understanding your options when it comes to battery equivalents can save time and money,” states John Redway, an expert in energy solutions. “By knowing which batteries can replace each other without compromising performance, consumers can ensure their devices operate smoothly while also making informed purchasing decisions.”

Can Energizer 357 Batteries replace LR44 / 303 / AG13 / SR44?

Yes, Energizer 357 batteries can replace LR44, 303, AG13, and SR44 batteries in many applications. While the LR44 is an alkaline battery with a nominal voltage of 1.5V, the 357 (or SR44) is a silver oxide battery typically rated at 1.55V. Both batteries share the same dimensions, making them physically compatible, but the chemistry differences may affect performance in certain devices. Always check device specifications to ensure proper functionality.

FAQs

Q: Are AG13 and A76 interchangeable with LR44?
A: Yes, both AG13 and A76 are interchangeable with LR44 as they have the same dimensions and voltage.

Q: What happens if I use a non-equivalent battery?
A: Using a non-equivalent battery may lead to poor performance or damage your device due to incorrect voltage or size.

Q: Can I recharge an LR44 battery?
A: No, LR44 batteries are not rechargeable; attempting to do so can be dangerous. By understanding the various equivalents of the LR44 battery, consumers can make informed choices that ensure their devices function effectively while optimizing cost and convenience in their power solutions.

What are digital calipers?
Digital calipers are precision measuring tools that display measurements on a digital screen. They can measure internal and external dimensions, as well as depths, with high accuracy, often down to 0.001 inches or 0.02 mm. Their ease of use and ability to switch between metric and imperial units make them ideal for various applications in engineering and woodworking.

How do you use digital calipers?
To use digital calipers, first set the resolution by adjusting the screw for accuracy. Place the jaws around the object to measure, ensuring a snug fit. Read the measurement on the digital display, then press the reset button to prepare for the next measurement. This process allows for quick and precise readings without manual adjustments.

What is the difference between SR44 and LR44 batteries?
The SR44 battery is a silver oxide battery providing stable voltage and higher energy density, making it ideal for precision devices like watches and medical instruments. In contrast, the LR44 is an alkaline battery with a lower capacity and shorter lifespan, suitable for general use in toys and remote controls.

Which battery lasts longer: SR44 or LR44?
The SR44 battery generally lasts longer than the LR44 due to its higher energy density and stable voltage output. While LR44 batteries have a capacity of 110-130 mAh, SR44 batteries can provide more consistent performance over time, making them preferable for devices requiring reliable power.

Can you interchange SR44 and LR44 batteries?
While SR44 and LR44 batteries have similar dimensions (11.6mm diameter, 5.4mm height), they are not fully interchangeable due to differences in chemistry and voltage stability. The SR44 offers better performance in high-drain devices, whereas LR44 is more cost-effective for everyday applications. Always check device specifications before substituting batteries.

Digital Calipers and the SR44 vs. LR44 Battery Comparison

Know more:

What devices commonly use LR44 batteries
How do LR44 batteries compare to SR44 batteries
Are there any environmental concerns with disposing of LR44 batteries
What are the differences between AG13 and LR44 batteries
Can I use a 357 battery in all devices that require an LR44

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