The LR1120 (AG8) coin battery measures 11.6mm in diameter and 2.1mm in height. It has a voltage of 1.5V. This alkaline battery is commonly used in small devices like calculators, toys, and electronic clocks. The LR1120 battery offers a reliable power source for everyday electronics.
For example, a CR2032 battery measures 20mm in diameter and 3.2mm thick. It typically provides a capacity of about 220mAh, making it suitable for devices that require a longer-lasting power source. In contrast, the CR2016 has a thickness of only 1.6mm and offers around 90mAh.
Properly understanding coin battery sizes ensures you select the correct battery for your device. Many devices specify the required battery type, which means choosing the right one is crucial for optimal performance.
Next, we will explore the various applications of these coin batteries. We will discuss how different industries utilize specific coin battery sizes. Understanding these applications will enhance your knowledge of battery selection and usage in everyday devices.
What Are Coin Batteries and Why Are They Important?
Coin batteries, also known as button cell batteries, are small, round batteries commonly used in devices like watches, calculators, and hearing aids. They are important due to their compact size, reliable power source, and extensive applications in everyday electronics.
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Common Types of Coin Batteries:
– Lithium coin batteries (e.g., CR2032)
– Alkaline coin batteries (e.g., LR44)
– Silver oxide coin batteries (e.g., SR44)
– Rechargeable coin batteries (e.g., CR rechargeable) -
Applications of Coin Batteries:
– Used in wristwatches
– Found in toys and games
– Present in medical devices like hearing aids
– Utilized in remotes and key fobs -
Safety Considerations:
– Risk of ingestion, especially in children
– Environmental impact of battery disposal
Understanding coin batteries helps emphasize their significance in various devices and technologies.
Common Types of Coin Batteries:
Coin batteries consist of several types, each with specific attributes. Lithium coin batteries are among the most popular due to their high energy density and long shelf life. For example, the CR2032 battery is widely used in gadgets due to its compact size and reliability. Alkaline coin batteries are less common but can be found in toys and simple electronic devices. These batteries offer lower voltage and are typically cheaper. Silver oxide coin batteries provide stable voltage and find better applications in precision devices like watches. Lastly, rechargeable coin batteries such as CR rechargeable types serve as more environmentally friendly alternatives as they can be reused.
Applications of Coin Batteries:
Coin batteries power various devices. They are extensively used in wristwatches, where their small size fits conveniently within the watch casing. Coin batteries also feature in toys and games, enabling operational efficiency in electronic components. Medical devices like hearing aids rely on coin batteries for portability without sacrificing power. Additionally, coin batteries are often found in remotes and key fobs for cars, facilitating wireless operations effortlessly.
Safety Considerations:
Safety is crucial when handling coin batteries. There exists a risk of ingestion, especially among young children, which can lead to serious health issues. The National Capital Poison Center emphasizes the importance of keeping these batteries out of reach to prevent accidental harm. Furthermore, there are environmental concerns surrounding battery disposal, as many contain hazardous materials. Recycling programs and proper disposal methods are essential to mitigate environmental risks associated with used batteries.
What Sizes Do Coin Batteries Come In?
Coin batteries come in various standardized sizes. They are generally denoted by a three-digit or four-digit code that indicates the battery’s diameter and thickness.
The main types of coin battery sizes include:
1. CR2032
2. CR2016
3. CR2025
4. CR2450
5. CR123A
6. SR44
7. LR44
Understanding these battery sizes and specifications is essential. Each type serves different devices and has unique attributes.
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CR2032:
The CR2032 coin battery has a diameter of 20mm and a thickness of 3.2mm. These are one of the most common types, often used in watches, calculators, and motherboards. A 2018 study by Battery University states that the CR2032 battery typically provides a capacity of around 220 mAh under continuous discharge conditions. -
CR2016:
The CR2016 coin battery is slightly thinner than the CR2032. It measures 20mm in diameter and 1.6mm in thickness. These batteries are commonly found in smaller devices like digital scales and remote controls. According to research conducted by Energizer, the CR2016 has a nominal capacity of approximately 90 mAh. -
CR2025:
The CR2025 coin battery is 20mm in diameter and 2.5mm in thickness. With a capacity of around 150 mAh, as noted by the International Battery Association in 2017, they are frequently used in key fobs and medical devices. The slightly increased thickness compared to the CR2016 allows for a higher energy capacity. -
CR2450:
The CR2450 battery is notable with a diameter of 24mm and a thickness of 5.0mm. These batteries provide a substantial capacity of around 600 mAh, which is ideal for more power-hungry devices such as fitness trackers and electronic toys. The Battery Association highlights their performance over longer periods. -
CR123A:
The CR123A is a cylindrical battery, often used for camera flashes and other high-drain devices. This battery type measures approximately 34.5mm in height and 17mm in diameter. It is generally not classified as a typical coin battery, but its widespread use in electronics warrants a mention. Reports suggest that the CR123A battery can deliver up to 1500 mAh. -
SR44:
The SR44 battery is a silver oxide variant, typically measuring 11.6mm in diameter and 5.4mm in height. These types are known for their stable voltage and are often employed in watches. The Silver Battery Study reports that SR44 batteries have a capacity range of about 150 mAh. -
LR44:
Like the SR44, the LR44 battery has similar dimensions but is an alkaline variant. It is also widely used in toys and gadgets. The capacity of an LR44 typically ranges between 110 to 120 mAh. The Alkaline Battery Federation suggests that while LR44 batteries are less stable in voltage than silver oxide types, they are more cost-effective.
Each battery type serves different purposes, and their specific attributes determine their use in various devices. Knowing these specifications helps in selecting the right battery for your needs.
What Is the Standard Size for Common Coin Batteries?
The standard size for common coin batteries is typically defined by a three-digit code followed by a two-digit number, indicating the battery’s diameter and height in millimeters. For example, a CR2032 battery has a diameter of 20 mm and a height of 3.2 mm.
According to the International Electrotechnical Commission (IEC), coin batteries, known also as button cells, come in various sizes and types, including alkaline, lithium, and silver oxide. The IEC sets the standards for battery specifications, ensuring consistency across manufacturers.
Coin batteries are widely used in small electronic devices such as watches, calculators, and hearing aids. Their compact size allows for efficient power supply in tight spaces. There are common sizes like CR2032, CR2016, and CR2450. Each code represents specific dimensions and chemistry, affecting their performance.
The Battery Association of Japan states that there are over 50 types of coin batteries available, reflecting the diversity in applications and requirements. This variety allows manufacturers to choose batteries based on device specifications.
Different factors influence the choice of coin battery size, including device design, energy needs, and required lifespan. Smaller devices typically require smaller batteries, while larger devices may support more powerful batteries.
According to the Battery Research Institute, the global coin battery market is projected to grow by 4.7% annually through 2027. This growth indicates a rising demand for these batteries in various consumer electronics.
The widespread use of coin batteries impacts electronic waste management and contributes to battery collection challenges. Improper disposal can lead to environmental issues due to toxic materials.
The environmental impact of coin batteries includes potential soil and water contamination from heavy metals, which poses health risks. For instance, mercury and cadmium are harmful and require proper disposal protocols.
Regulatory bodies, such as the U.S. Environmental Protection Agency (EPA), recommend that consumers recycle batteries at designated facilities. They emphasize education on battery disposal to prevent environmental harm.
Strategies to mitigate these issues include promoting battery recycling programs and developing biodegradable alternatives. Companies are encouraged to invest in sustainable battery technologies to reduce environmental footprints.
Brands like 4R Energy are exploring eco-friendly battery solutions. These innovations may pave the way for sustainable practices in the battery industry.
How Do Coin Battery Sizes Compare to One Another?
Coin batteries come in various sizes and specifications. Below is a comparison of some common coin battery sizes:
| Battery Size | Diameter (mm) | Height (mm) | Voltage (V) | Common Applications | Capacity (mAh) |
|---|---|---|---|---|---|
| CR2032 | 20 | 3.2 | 3 | Watches, calculators, motherboards | 220 |
| CR2016 | 20 | 1.6 | 3 | Watches, remote controls | 90 |
| CR2450 | 24 | 5.0 | 3 | Fitness trackers, medical devices | 600 |
| CR123A | 34.5 | 17 | 3 | Digital cameras, flashlights | 1500 |
What Are the Most Common Types of Coin Batteries?
The most common types of coin batteries are lithium and alkaline batteries.
- Lithium Coin Batteries
- Alkaline Coin Batteries
- Silver Oxide Coin Batteries
- Nickel Metal Hydride (NiMH) Coin Batteries
- Rechargeable Lithium Coin Batteries
Understanding these battery types offers insight into their uses and characteristics. Each type serves specific applications based on its attributes, including energy capacity, shelf life, and discharge rates.
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Lithium Coin Batteries: Lithium coin batteries are popular for their long lifespan and high energy density. They are commonly used in watches, calculators, and small electronic devices. For instance, the CR2032 lithium battery can last up to 10 years in storage and delivers a nominal voltage of 3V. According to a report by Battery University (2021), lithium batteries are favored for their ability to operate in extreme temperatures and their low self-discharge rates.
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Alkaline Coin Batteries: Alkaline coin batteries are cost-effective options for devices with moderate power needs. They are typically found in remote controls, toys, and certain types of clocks. An AA alkaline coin battery offers about 1.5V and is widely available. However, their performance diminishes significantly in high-drain devices compared to lithium batteries. Studies show they may last only a few hours in devices that require constant power output.
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Silver Oxide Coin Batteries: Silver oxide batteries provide high energy density and stable voltage output. They are commonly used in small electronics, medical devices, and precision instruments. The SR626SW is a common type, providing 1.55V. According to the International Journal of Battery Technology (2020), these batteries have a good performance at both high and low temperatures, making them suitable for various applications despite being more expensive than alkaline options.
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Nickel Metal Hydride (NiMH) Coin Batteries: NiMH coin batteries are rechargeable alternatives that offer good performance with a higher environmental profile. They are widely used in devices that require a moderate amount of power, like digital cameras. The energy capacity typically ranges from 80 to 1000 mAh, depending on size. Although less common than lithium and alkaline options, their rechargeable nature can be economical in the long run.
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Rechargeable Lithium Coin Batteries: Rechargeable lithium coin batteries combine the benefits of lithium power with the convenience of rechargeability. They are ideal for devices like fitness trackers and smartwatches that require consistent power. These batteries typically maintain a voltage of around 3.7V and can be recharged hundreds of times. A report from the Journal of Power Sources (2022) highlights that they provide more power at a lower weight compared to traditional batteries, although their initial cost is higher.
In summary, the selection of coin batteries depends on specific device requirements, cost considerations, and environmental impacts. Each type serves unique purposes based on energy needs and durability.
What Is the Difference Between CR and SR Coin Batteries?
CR (Lithium Manganese Dioxide) and SR (Silver Oxide) coin batteries differ in several aspects:
| Characteristic | CR Batteries | SR Batteries |
|---|---|---|
| Voltage | 3.0V | 1.55V |
| Chemistry | Lithium Manganese Dioxide | Silver Oxide |
| Capacity | Higher capacity, longer runtime | Lower capacity, shorter runtime |
| Applications | Watches, calculators, cameras | Watches, hearing aids, medical devices |
| Cost | Generally lower cost | Generally higher cost |
| Temperature Range | -20°C to 60°C | -10°C to 50°C |
| Self-Discharge Rate | Low self-discharge | Higher self-discharge |
What Specifications Should You Know About Coin Batteries?
Coin batteries have specific key specifications essential for selection and usage.
- Voltage Rating
- Capacity (mAh)
- Diameter and Thickness
- Chemistry Type
- Terminals and Connections
Understanding these specifications is vital for ensuring compatibility and functionality in devices.
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Voltage Rating:
The voltage rating of a coin battery indicates the electrical potential difference it provides. Typically, lithium coin batteries, like CR2032, have a nominal voltage of 3 volts. This voltage is crucial for the operation of many electronic devices. -
Capacity (mAh):
The capacity of a coin battery, measured in milliamp-hours (mAh), defines how much energy it can store. A higher mAh rating means a longer runtime for the device. For example, a CR2032 battery usually has a capacity of around 220-240 mAh. -
Diameter and Thickness:
The physical dimensions of coin batteries are critical for fitting into devices. Common designations, such as CR2032, indicate a diameter of 20mm and a thickness of 3.2mm. Accurate size ensures compatibility with the device’s battery compartment. -
Chemistry Type:
The chemistry type of coin batteries mainly includes lithium (Li), silver oxide (Ag), and alkaline (Zn). Lithium batteries, like CR series, provide better energy density and longer shelf life compared to silver oxide and alkaline types. -
Terminals and Connections:
The terminals and connections of coin batteries refer to how they connect to devices. Most coin batteries have standard positive (+) and negative (-) terminals, but the design can vary slightly. Understanding this can prevent incorrect installation, which could damage the battery or device.
These specifications collectively govern the effectiveness and compatibility of coin batteries in various applications.
How Does Voltage Affect Coin Battery Performance?
Voltage significantly affects coin battery performance. Coin batteries, also known as button cells, have specific voltage ratings. These ratings indicate the electrical potential energy available. Higher voltage can result in increased power output, allowing the battery to drive larger loads or operate devices more efficiently. However, if the voltage exceeds the device’s requirements, it can cause damage or malfunction.
In contrast, a lower voltage can reduce the battery’s ability to power a device effectively. Insufficient voltage may lead to poor performance, such as dimmed lights in LED applications or weak signals in remote controls. As the battery discharges, its voltage decreases, affecting its performance over time.
It is important to pair devices with the correct voltage battery. Doing so ensures optimal performance and extends battery life. Understanding the relationship between voltage and performance is essential when selecting a coin battery for specific applications.
What Applications Utilize Coin Batteries?
Coin batteries, also known as button cell batteries, are commonly used in various electronic devices. They power devices such as watches, calculators, and hearing aids.
- Common Applications of Coin Batteries:
– Watches
– Hearing aids
– Calculators
– Key fobs
– Remote controls
– Fitness trackers
– Cameras
Coin batteries find diverse applications across different devices due to their compact size and reliable performance. The following sections will provide detailed explanations for each application type and highlight their significance.
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Watches: Coin batteries power most quartz watches due to their small size and longevity. These batteries can last for years, providing a reliable energy source. High-quality lithium coin batteries, such as the CR2032, are often used in watches, ensuring accurate timekeeping.
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Hearing Aids: Coin batteries are essential for hearing aids, offering a compact and lightweight power source. Many hearing aid users prefer lithium coin batteries for their extended life and consistent power output. For instance, the PR44 coin battery is a common choice, balancing size and performance for auditory devices.
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Calculators: Coin batteries, such as the CR2032, are frequently used in calculators. Their long shelf life ensures that calculators remain usable for extended periods without frequent battery changes. Studies indicate that users find coin batteries to be a practical solution for low-energy devices like calculators.
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Key Fobs: Many automobile key fobs utilize coin batteries due to their compact form. These batteries provide sufficient power for remote locking and unlocking vehicles. The CR2025 battery is commonly found in key fobs, offering reliability and ease of replacement.
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Remote Controls: Coin batteries are prevalent in various remote controls for televisions, gaming consoles, and other devices. These batteries are chosen for their compact size, allowing remote designs to remain user-friendly. For example, the CR2016 battery is often selected because of its balance between size and capacity.
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Fitness Trackers: Many fitness trackers use coin batteries to power their sensors and displays. The lightweight and compact nature of these batteries fits well with wearable technology. The CR2025 is a favored choice, allowing fitness devices to operate efficiently while maintaining portability.
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Cameras: Certain cameras, especially compact digital ones, use coin batteries for their small size and lightweight characteristics. The CR123A, although slightly larger, is also considered for specific models requiring reliable power. Users benefit from the long shelf life of these batteries, ensuring their cameras are ready for capturing moments.
Overall, coin batteries serve various applications across different industries due to their compact design, reliability, and ease of use.
What Factors Should You Consider When Choosing a Coin Battery Size?
When choosing a coin battery size, consider compatibility, voltage requirements, physical dimensions, and application type.
- Compatibility with devices
- Voltage requirements
- Physical dimensions
- Application type
- Battery chemistry
Understanding these factors is essential for selecting the appropriate coin battery size for your needs.
1. Compatibility with Devices:
Compatibility with devices is crucial when selecting a coin battery size. Different devices require specific battery types to function properly. For example, a CR2032 battery may work in a watch, while a CR2025 may not. It is advisable to check the device’s manual or battery compartment, which usually indicates the correct battery size needed.
2. Voltage Requirements:
Voltage requirements dictate the performance of the device. Most coin batteries provide a standard voltage, commonly 3 volts for lithium batteries. Using a battery with the wrong voltage can result in improper functioning or damage to the device. For instance, a device designed for a 3-volt battery will not function correctly with a 1.5-volt alkaline battery.
3. Physical Dimensions:
Physical dimensions refer to the size and shape of the battery. Coin batteries come in various sizes, such as 10mm, 20mm, or 25mm in diameter. These dimensions affect how well the battery fits into the device. Manufacturers commonly label batteries with a two-digit number indicating diameter and thickness, such as CR2032 (20mm diameter and 3.2mm thickness).
4. Application Type:
Application type influences the battery choice based on how the device uses energy. Some applications demand higher energy-output batteries, while others require batteries that maintain a stable output over time. For example, medical devices may require batteries that provide consistent voltage for accurate readings, unlike a simple remote control that may function with a less reliable power source.
5. Battery Chemistry:
Battery chemistry impacts the longevity and performance of the coin battery. Lithium batteries, known for their higher energy density and longer shelf life, are often preferred for devices that require reliable long-term power. On the other hand, alkaline batteries tend to be cheaper and suffice for low-drain applications. Understanding the chemistry allows users to choose batteries that best match their device requirements and usage patterns.
How Can You Properly Dispose of Coin Batteries?
To properly dispose of coin batteries, you should take them to a designated recycling facility or a local hazardous waste collection event. This ensures environmentally safe disposal and prevents harmful chemicals from entering landfills.
Coin batteries, often found in watches, hearing aids, and small electronic devices, contain materials like lithium, mercury, and cadmium. These materials can be toxic if not handled correctly. Here are key steps to follow for proper disposal:
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Check Local Regulations: Many areas have specific laws regarding battery disposal. Local environmental agencies or waste management departments provide guidelines on appropriate disposal methods.
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Use Recycling Programs: Many retailers and manufacturers offer battery recycling programs. For instance, stores like Best Buy and local electronics shops often provide drop-off bins for used batteries.
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Participate in Hazardous Waste Collections: Communities frequently organize events for residents to drop off hazardous waste. These events safely collect batteries and other harmful materials for proper treatment.
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Seal Batteries: If you cannot dispose of coin batteries immediately, store them safely. Place them in a non-conductive container, such as a plastic bag or an old battery case, to prevent accidental contact.
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Avoid Regular Trash: Never dispose of coin batteries in regular household trash. This practice poses significant environmental risks. Batteries can leak harmful substances that contaminate soil and water.
Following these steps ensures that your disposal practices align with environmental safety protocols. Proper disposal protects the environment and promotes responsible behavior regarding hazardous materials.
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