Whether it’s your car key fob, digital watch, or kitchen scale, coin cell batteries are an important source of power for these devices. The CR2032 and CR2025 are two of the most common types, but many people don’t know the difference between them. Does size matter? What are the performance differences? How do you choose the best one for your device?

This article will take a deep dive into the characteristics of CR2032 and CR2025 batteries to help you make an informed choice.

 

Part 1. What does CR stand for?

First, let’s understand what the “CR” prefix means. “CR” stands for lithium coin cell, which uses lithium manganese dioxide (LiMnO2) as the main chemical component. This chemical material gives the battery a stable output voltage and provides a long storage life of typically 5 to 10 years.

In contrast, other coin cell batteries may use different chemistries, such as:

• “LR” (alkaline battery)

• “SR” (silver oxide battery)

So when you see the “CR” logo, you know it’s a lithium battery designed for low-power, long-life applications.

 

Part 2. What is a CR2032 battery?

 

 

The CR2032 lithium coin cell battery is one of the most widely used button batteries, favored for its balanced size and capacity. As you can see from the naming convention:

• The first two digits "20" represent the battery's 20 mm diameter

• The last two digits "32" represent the battery's 3.2 mm thickness

CR2032 button cell batteries are highly regarded for their high capacity, with a voltage of 3v, typically between 210 mAh and 240 mAh, making them ideal for devices that require longer-lasting power. From medical devices like blood glucose monitors to everyday items like car key fobs and small remote controls, CR2032 batteries provide reliable power, even in colder conditions where other batteries may fail.

 

Part 3. Understanding CR2025 Batteries

 

 

The CR2025 is also part of the CR series of button batteries, and the "2025" in its name means:

• Diameter: 20 mm

• Thickness: 2.5 mm (slightly thinner than the CR2032)

Due to their smaller capacity and 3v voltage, typically between 210 mAh and 240 mAh, CR2025 button cell batteries may not last as long as their thicker counterparts, especially in devices that require a steady supply of power. However, they are still very effective in low-power devices such as watches, small remote controls, and some medical devices such as thermometers.

 

Part 4. CR2032 vs. CR2025: Which is Better?

There is no absolute "better" choice when it comes to choosing between a CR2032 and a CR2025. It really depends on your specific needs. If your device requires a battery with a larger capacity and longer life, such as a car key fob or medical device, then the CR2032 button cell battery would be your first choice. On the other hand, if your device has a more compact battery compartment or requires minimal power consumption, then a CR2025 button cell battery may be a better fit.

 

Part 5. How do I choose the right battery?

 

 

The choice between a CR2032 or CR2025 depends largely on the power requirements of the device and the available space in the battery compartment. For example, if your device manual specifies the use of a CR2025, it may be due to size constraints. In this case, using a CR2032 (even if it has a higher capacity) may not be a good fit. When replacing batteries, it is recommended to refer to the device manual to ensure that the selected battery meets the requirements.

 

Part 6. Are CR2032 and CR2025 interchangeable?

In many cases, it is not possible to replace a CR2025 with a CR2032, but this depends on the device's battery compartment. Since the CR2032 is thicker, it may not fit into a compartment designed for the thinner CR2025.

 

Part 7. Are CR2032 and CR2025 rechargeable?

Generally, CR2032 and CR2025 batteries are disposable and not rechargeable. If they become depleted, they should be properly recycled.

 

In general, it is best to use the battery type specified in the device manual for optimal performance and safety.

When it comes to choosing a CR2450 coin cell battery, many people are confused: Which one should I choose? Will choosing the wrong one damage my device? How long can it last? These questions may be troubling, but don't worry! This article will give you a detailed introduction to the specifications, uses, and how to properly select and maintain CR2450 button cell batteries.

 

 

What is a CR2450 battery?

The CR2450 button cell battery is a compact lithium battery widely used in electronic devices. The "CR" refers to its Lithium Manganese Dioxide (LiMnO2) chemistry, while the "2450" refers to its dimensions:

• Diameter: 24 mm

• Thickness: 5.0 mm

CR2450 is known for its high energy density and long life, and is suitable for a variety of small electronic devices such as remote controls, medical instruments, and IoT devices. 

 

CR2450 Battery Specifications

Specifications	Detail
Battery Type	CR2450
Nominal voltage	3V
Capacity	500-620 mAh（varies by manufacturer）
Diameter	24.5 mm（0.965 in）
Height	5.0 mm（0.197 in）
Weight	Approx. 6.5 g
Chemical system	Lithium manganese dioxide (LiMnO2)
Operating temperature range	-20°C to +70°C
Self-discharge rate	< 1% per year (at room temperature)
Continuous discharge current	0.2-0.5 mA
Maximum discharge current	1-3 mA (varies by manufacturer)
Shelf life	5-10 years (depending on storage conditions)

 

How to choose the right CR2450 battery?

 

 

1. Device compatibility

CR2450 is widely used in watches, car keychains, medical instruments, etc. Please check the battery compartment specifications of the device before purchasing to ensure compatibility.

2. Price and cost performance

CR2450 batteries generally cost between $2 and $10, depending on the brand and the quantity purchased. Although cheap batteries may seem more cost-effective, high-quality batteries have a longer lifespan and are more cost-effective in the long run. 

3. Well-known Brand Recommendations

Some trusted CR2450 battery brands include Energizer, Duracell, Panasonic. These manufacturers are known for producing high-quality, reliable batteries that perform harmoniously. However, lesser-known brands such as Warriors also offer good quality at competitive prices. 

4. Factors to consider when buying

When choosing CR2450 button cell batteries, consider the following:

• Capacity: The higher the mAh value, the longer the life.

• Expiration date: Buy batteries with a long shelf life.

• Environmental conditions: If exposed to extreme temperatures, make sure they are rated accordingly.

• Package quantity: If you use them frequently, you may save money by buying in bulk. 

 

Application scenarios of CR2450 batteries

 

 

Internet of Things devices: such as wireless sensors, wearable health devices.

Remote controls: car key chains, TV remote controls, garage door remote controls.

Medical devices: blood glucose monitors, hearing aids, electronic thermometers.

Consumer electronics: watches, calculators, electronic timers.

Toys and games: electronic toys, handheld game consoles.

LED lighting: key chain lights, decorative light strings.

Backup power: memory backup for electronic devices.

Fitness trackers: pedometers, health testing equipment.

Access control systems: RFID tags, smart door locks.

 

Advantages of CR2450 Batteries

1. High Energy Density

-CR2450 battery is small in size but has high energy capacity. It typically provides about 620–620 mAh, which is ideal for devices that need long-lasting power.

2. Long Shelf Life

-Low self-discharge rate means up to 90% of capacity can be retained after 10 years of storage - Ideal for use as a backup power source for storage devices or long-term use.

3. Wide Operating Temperature Range

-Reliable operation in the range of -20°C to +60°C, can be used outdoors or in harsh environments.

4. Stable Voltage Output

-Provides a stable 3V output, which is enough for many electronic devices such as watches or remote controls.

5. Compact Size

-Suitable for small devices without compromising power supply.

6. Leak-proof Design

-Leak-proof design reduces the risk of device damage. 

 

CR2450 Battery Storage and Care

Proper Storage

Always handle these small button batteries with clean, dry hands to prevent moisture or dirt from affecting them. Avoid touching their flat surfaces, as oils from your skin can cause problems – potentially shortening their lifespan. Use non-conductive tools when inserting or removing the battery from a device to avoid short circuits.

 

Storage Tips for Extended Shelf Life

For optimal storage of your CR2450, keep it in a cool, dry place away from direct sunlight – ideally between 10°C-25°C (50°F-77°F). Keep it in its original packaging if possible; plastic containers are also great for preventing moisture/accidental shorts, but make sure to keep it separate from other metal objects/batteries that could pose a safety hazard! By following these tips, you can rest assured knowing they will stay fresh and ready to go when you need them later!

 

How to Test Battery Performance

To test your CR2450 button cell battery, use a multimeter set to DC voltage. A healthy battery should read close to 3 volts. If it reads significantly lower, it needs to be replaced. Some devices have built-in battery indicators; refer to the device manual for specific testing procedures. 

 

Signs of a CR2450 lithium manganese battery failure

Watch for the following indicators of battery failure:

• Dimming of the device display or LED

• Intermittent device operation

• Frequent low-battery warnings

• Unusual behavior of the electronic device  

 

Can the CR2450 be replaced with another battery type?

No. Use batteries that match the size (24mm wide, 5mm thick) and voltage (3.0V). Similar types (such as BR2450) may be suitable for low-drain applications, but have different chemistry and lower capacity. 

 

Safety precautions when using CR2450 coin cell batteries:

• Keep button batteries out of the reach of children to prevent accidental swallowing, which may cause serious choking risks or internal damage.

• Avoid exposing the battery to high temperatures, do not puncture it or attempt to charge it to prevent safety hazards from short circuits or leakage.

• It is recommended to store the battery in a cool, dry environment to maintain its optimal performance and extend its life.

What is an LR44 battery?

 

 

The LR44 battery is a small, round, disposable 1.5V Alkaline Manganese Batteries. It is often called a "button battery" because of its coin-like appearance. It has a diameter of 11.6 mm and a height of 5.4 mm and is often used to power small electronic devices.

 

Uses of LR44 Button Cell Batteries

LR44 Button Cell Batteries are widely used in various small electronic products. Due to their small size and stable output of 1.5V voltage, they are used in the following devices：

• Digital products: such as calculators, electronic watches, key cards, car remote controls and keyless entry systems.
• Toys and electronic entertainment: suitable for electronic toys, talking greeting cards, laser pointers, etc.
• Medical equipment: such as hearing aids, blood glucose meters, electronic thermometers, etc.
• Other equipment: Some small cameras, LED lighting devices, smoke alarms, etc. may also use LR44 batteries.

With its high adaptability, LR44 button cell batteries have become a reliable power source for many home and office devices, ensuring the normal operation of various daily devices.

 

How many volts does an LR44 button cell batteries have?

 

 

LR44 button cell batteries have a nominal voltage of 1.5 volts. They are able to deliver this voltage steadily during normal operation. However, as the battery wears down, the voltage may drop slightly.

 

How do I install an LR44 button cell batteries?

Replacing an LR44 Button Cell Batteries is relatively simple, and here are the basic instructions:

1. Identify the battery compartment: Locate the battery compartment on your smartphone. It is usually secured by a screw or latch.

2. Open the compartment: Follow the procedure for opening the container as indicated in your device's manual.

3. Remove the old battery: Gently remove the old battery using your fingers or a non-metallic utensil. Do not touch the positive and negative terminals with your bare hands.

4. Orient the new battery: The positive (+) and negative (-) markings on the new battery should correspond to the markings on the battery compartment.

5. Insert the new battery: Carefully insert the new battery into the battery compartment, making sure the positive and negative terminals are properly aligned.

6. Close the compartment: Secure the compartment according to the device's instructions. Most compartments either snap shut or require screws to secure.

 

Before replacing the battery, it is recommended to consult the device manual to ensure operation complies with official guidelines.

 

Are AG13 and LR44 Button Cell Batteries the same?

 

 

Yes, AG13 and LR44 are actually the same battery, just with different names. They are identical in specifications and performance and can be used interchangeably.

 

LR44 Batteries Life

The battery life of LR44 batteries is affected by the following factors:

• Device power consumption: High power consumption devices will accelerate battery consumption.

• Battery material: Different versions of LR44 may have slightly different battery life performance.

• Usage habits: Frequent use of the device will shorten the battery life.

• Storage environment: Storage in high temperature or extreme humidity conditions will affect the battery life.

 

Generally speaking, the service life of LR44 batteries can range from a few months to a few years. For example, a low-power watch may last for several years, while a frequently used toy may require frequent battery replacement.

 

Tips for purchasing LR44 button cell batteries

When purchasing LR44 batteries, it is recommended to choose a reputable brand and avoid low-priced, low-quality products. If you need to use it for a long time, buying in bulk may be more cost-effective.

 

Summary

LR44 battery is a highly efficient power source widely used in small electronic devices. Knowing its specifications, alternative models and correct usage methods can ensure long-term stable operation of the device.

QOILTECH is pleased to announce its participation in the upcoming 25th China International Petroleum & Petrochemical Technology and Equipment Exhibition (cippe2025). The event will be held at the New China International Exhibition Center in Beijing from March 26 to 28, 2025.

 

QOILTECH will be showcasing its cutting-edge technologies and equipment at Booth W2375 in Hall W2. With a focus on delivering advanced solutions for the industry's evolving needs, QOILTECH aims to promote its wide range of products and services to a global audience.

At Bit Measurement while Drilling System

Drilling Nuclear-Magnetic Resonance Logging Tool

The China International Petroleum & Petrochemical Technology and Equipment Exhibition (cippe) has established itself as a premier event in the industry, attracting key players and experts from around the world. With its extensive experience and expertise, QOILTECH is excited to join this prestigious platform and engage with industry professionals, decision-makers, and potential partners.

 

About QOILTECH:

 

QOILTECH was established in September 2020 and is a wholly-owned subsidiary of CIQTEK. Its core technology is magnetic resonance precision measurement, and it provides the energy industry with core key components, detection instruments and equipment, systematic solutions, and other products and services.

 

QOILTECH focuses on the utilization of unconventional oil and gas resources such as shale oil and gas, coalbed methane, and combustible ice. It has deployed instruments and equipment such as drilling nuclear magnetic resonance logging instruments, near-bit measurement systems, and high-rate pulses, and has opened up application scenarios such as downhole sensing and digital core analysis.

 QOILTECH Website: https://www.qoiltech.com/