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HomeBlogCR1220 Battery: Specifications, Features and Applications
on May 7th

CR1220 Battery: Specifications, Features and Applications


CR1220 batteries excel in the field of micropower, especially in terms of compatibility and performance in various electronic devices. This high-performance lithium battery is favored for its high energy density and stable voltage output, making it ideal for applications requiring compact size and long-lasting power. Its main material is lithium manganese dioxide, which provides stronger energy output and longer life than other battery types. The CR1220 is designed with a diameter of 12 mm and a thickness of 2.0 mm to meet the demanding needs of both daily and professional equipment. Whether delivering precise power in medical devices for patient safety or in everyday gadgets to ensure the convenience of modern life, the CR1220's low self-discharge rate and long shelf life make it extremely important in applications that require long-term reliability. In addition, this battery can efficiently provide power in a variety of environmental conditions, demonstrating its excellent adaptability and forward-looking design.

Catalog

1. Specifications of CR1220 battery
2. Characteristics of CR1220 Battery
3. Application of CR1220 Battery
4. CR1220 and Its Equivalent Batteries
5. Comparison between CR1220 and BR1220 Batteries
6. Comparison of CR1216, CR1220, and CR1225 Batteries
7. Treatment of Battery Leakage
8. Battery Safety Issues
9. Conclusion

 CR1220
Figure 1: CR1220


Specifications of CR1220 battery


The CR1220 is a high-performance lithium battery that finds extensive use in miniature electronic devices. Renowned for its high energy density and stable voltage output, this battery is particularly favored for applications that demand compact size and sustained power delivery. The CR1220 is part of the CR series, with a diameter of 12 millimeters and a thickness of 2.0 millimeters, its model name "1220" reflects these physical dimensions. Lithium manganese dioxide (Li-MnO2) is the primary material used in this battery, providing not only a long-lasting energy output but also a much higher energy density compared to other common battery types like nickel-metal hydride or lithium-ion.

A significant advantage of the lithium manganese dioxide battery, such as the CR1220, is its remarkably low self-discharge rate. This feature ensures that the battery retains most of its original charge even after prolonged storage, leading to a generally long shelf life that typically ranges from 4 to 7 years, with premium products extending up to 10 years. Such extended shelf life is crucial for devices that might sit unused for long periods, such as various emergency backup devices and security-related electronic products.

Dimensions of CR1220
Figure 2: Dimensions of CR1220


The CR1220 operates at a nominal voltage of 3 volts, meaning it can provide a relatively constant output voltage throughout its usage cycle. Its capacity usually ranges from 30 to 40 milliamp-hours (mAh), a metric that determines how long the battery can power a device without needing replacement. The capacity directly affects the operational duration of the battery, especially in devices with consistent energy consumption like watches and pedometers.

In miniature electronic devices, stable voltage, and high energy density are important indicators to witness the quality of the battery. CR1220 batteries meet the stringent requirements of these devices in terms of size and performance, ensuring a continuous and reliable energy supply. Moreover, the characteristics of this lithium manganese dioxide battery provide greater flexibility in design and material selection, allowing developers to better optimize product designs to meet the changing needs of the electronic device market.

Type

Parameter

Series

CR1220

Material

Lithium

Size / Dimension

0.49Dia x 0.08 H 12.5mmx2.0mm

Weight

1.2g

Height

2.0mm

Output Voltage

3V

Max Operating Temperature

60°C

Min Operating Temperature

-30°C

Capacity

35mAh

Chart 1: Specifications of CR1220 Battery


Characteristics of CR1220 Battery


The CR1220 battery is designed to cater to the demanding power requirements of contemporary electronic gadgets. One of its notable characteristics is its superior pulse discharge capability. This feature allows the battery to quickly supply substantial amounts of power. Such a burst is important for devices that need immediate energy surges, like digital cameras and medical monitors, ensuring they perform optimally even in urgent situations. The CR1220 offers stable voltage output during its entire discharge cycle. This consistency is essential for devices like digital thermometers and advanced security systems, to maintain their reliability. A steady voltage helps prevent malfunctions and inaccuracies in data that could occur due to fluctuations in power.

Built for durability, the CR1220 is reliable over long periods. It supports a wide range of applications, from routine daily use to critical functions in medical or environmental monitoring equipment. Its durability is particularly important in scenarios where battery failure would have severe implications, ensuring that such devices operate without interruption, thus protecting data integrity and ensuring safety.

Characteristics of CR1220 Battery
Figure 3: Characteristics of CR1220 Battery


Application of CR1220 Battery


The CR1220 battery, with its compact size and high efficiency, is perfectly suited for a variety of low-power devices needing long battery life for steady operation. It's used across multiple sectors, providing dependable power without frequent replacements.

In the healthcare sector, the CR1220 is integral to medical devices like glucose monitors and heart rate monitors. These devices rely on the battery's ability to provide stable, precise power. The stable power output of the CR1220 battery ensures continuous and reliable health monitoring, helping to manage conditions that require continuous monitoring.

For everyday use, the CR1220 is commonly found in devices such as car key fobs and household remote controls. Its long lifespan and reliability mean that these items remain functional for long periods without needing a battery change. This is particularly critical for car key fobs, which must work reliably every time to ensure vehicle security and accessibility.

The CR1220 powers numerous small electronic gadgets, including calculators and digital cameras. Its small form factor allows it to fit into tight spaces while providing sufficient power. This ensures calculators operate accurately and digital cameras keep working during important moments, like special events or travel, when charging might not be possible.

It's crucial to recognize that the CR1220 battery is non-rechargeable. Once its life ends, proper disposal is required to comply with environmental regulations. This highlights the importance of recycling programs that help reduce the environmental impact of disposable batteries. Proper disposal processes ensure that harmful materials are managed responsibly, promoting sustainable resource use in battery manufacturing.

Battery

Nominal Capacity

Operating Temperature
Self-Discharge Rate

Discharge Current

Duracell CR1220

38mAh over 45kΩ, down to 2.0V

-20°C to +60°C
-

0.1mA std. cont.
1.5mA max. cont.
5mA max. 1s pulse

Energizer CR1220

37mAh over 45kΩ, @21°C, down to 2.0V

-30°C to +70°C
~1% per year

0.046mA std. cont.
2.8mA @2.8V 1kΩ 2s pulse

GP CR1220

38mAh over 30kΩ, @20±2°C, down to 2.0V

-
-

-

Maxell CR1220

36mAh

-20°C to +85°C
-

0.1mA std. cont.
-

Panasonic BR1220

35mAh

-30°C to +85°C
-

0.03mA std. cont.

Panasonic CR1220

35mAh over 30kΩ, @20°C, down to 2.0V

-30°C to +85°C
-

0.095mA std. cont.

Renata CR1220

35mAh

-30°C to +85°C
~1% per year

0.1mA std. cont.
1.0mA max. cont.

Varta CR1220

35mAh over 39kΩ, @20°C, down to 2.0V

-20°C to +70°C
-

-

Chart 2: CR1220 Batteries Reference Chart


CR1220 and Its Equivalent Batteries


When you need to replace the battery, you need to know ahead of time the compatibility of the CR1220 battery with other similar models. The CR1220 is designed to specific size and electrochemical standards, making it interchangeable with models such as the DL1220, ECR1220, and BR1220. This interchangeability offers flexibility and convenience for maintenance and replacement.

 Duracell DL/CR 1220
Figure 4: Duracell DL/CR 1220


All these equivalent models, including the CR1220, utilize lithium manganese dioxide (Li-MnO2) as the active component. This material is chosen for its stability and high voltage output. These batteries share the same dimensions—12mm in diameter and 2.0mm thick—fitting perfectly in a variety of devices, from digital watches to medical instruments. Their consistent size and voltage specs ensure that devices work reliably without needing modifications to the battery compartment.

When it comes to choosing a replacement battery, it's crucial to look beyond just size and power. The brand's reputation and performance play a key role. Brands known for reliability often ensure the longevity and safety of their batteries, which enhances the overall dependability of the devices they power. Opting for a trusted brand helps avoid issues such as battery leaks, unexpected shutdowns, or inconsistent performance, which can occur with lower-quality substitutes. While CR1220 and its equivalents like DL1220, ECR1220, and BR1220 can be used interchangeably, selecting a reputable brand and ensuring the battery meets industry standards is the key to the effective and safe operation of sensitive electronic devices.


 CR1220 Battery Equivalent
Figure 5: CR1220 Battery Equivalent


Comparison between CR1220 and BR1220 Batteries


 BR1220 & CR1220
Figure 6: BR1220 & CR1220


CR1220 and BR1220 are very similar, and when deciding between the CR1220 and BR1220 batteries for use in small electronic devices, it's important to understand the significant performance differences between them, as these differences influence their suitability for specific applications. The CR1220 battery is known for its high energy density and stable voltage output, making it ideal for devices that require consistent power over long periods. This battery is particularly suited for low-power devices operated at room temperature, such as watches, pedometers, or remote controls.

In contrast, the BR1220 battery excels in environments requiring excellent low-temperature performance and has an extremely low self-discharge rate. Its main component, lithium carbonate (Li2CO3), performs well even in cold conditions, making the BR1220 more suitable for use in outdoor or cold-weather devices. For instance, in electronic instruments used in skiing or mountaineering, the BR1220 provides a reliable and steady power supply that is crucial for these applications.

Both batteries perform similarly in low-power devices at normal temperatures, offering long-term power support and stable voltage output. However, when selecting a battery, users should carefully consider the operating environment and power demands of their device. For equipment that must operate in cold conditions or where battery replacement is impractical for extended periods, the BR1220 is likely the better choice. Conversely, the CR1220 is generally sufficient for indoor use or in mild climate conditions, meeting the needs of most devices.


Comparison of CR1216, CR1220, and CR1225 Batteries


In addition to the BR1220 battery, there are several other batteries similar to the CR1220 battery. They are all CR batteries of the same series, namely CR1216 and CR1225 batteries. Although similar in function, their differences in size affect their performance and suitability for various applications.

CR2016
Figure 7: CR2016


The CR1216 battery measures 12.5 x 1.6 mm with a capacity of about 25 milliamp-hours. This smaller size and capacity make it ideal for extremely compact devices. It is typically used in devices where a long battery life isn't critical, such as in small remote controls or some wearable technologies. Like the CR1220, it has a low self-discharge rate, which helps prolong its storage life when not in use.

The CR1220 battery, measuring 12.5 x 2.0 mm with a capacity generally between 35 to 40 milliamp-hours, offers slightly more power than the CR1216. Its balance of size and capacity makes it a preferred choice for many standard small electronic devices, such as medical monitoring tools and security tokens. The relatively low leakage current of the CR1220 also supports stable, long-term operation, especially in applications that require a consistent power supply.

With dimensions of 12.5 x 2.5 mm and a capacity of about 50 milliamp-hours, the CR1225 is the largest of the three. Its increased capacity allows it to operate under higher discharge currents, making it suitable for devices with higher power demands, like advanced remote controls and certain electronic gaming devices. This larger capacity also means that under similar usage conditions, the CR1225 can last longer before needing replacement.

 CR1225
Figure 8: CR1225


While it might seem convenient to use a CR1225 or CR1216 in a device designed for a CR1220, caution is necessary to avoid issues like physical damage or poor contact due to size mismatches. For instance, the 0.5 mm height difference between the CR1220 and CR1225 could cause structural strain or increased internal pressure in specific devices, while the 0.4 mm difference between the CR1216 and CR1220 could impact the reliability of battery contacts.

Therefore, even though these three batteries might appear interchangeable in some scenarios, it's important for users to carefully consider the physical space and power requirements of their devices before choosing a replacement battery. Making the right choice not only ensures the proper functioning of the device but also avoids additional repair costs from improper replacements.

Characteristic

CR1216

CR1220

CR1225

Physical Dimensions (mm)

12.5 x 1.6

12.5 x 2.0

12.5 x 2.5

Capacity (mAh)

~25

35-40

~50

Drain Currents

Similar to CR1220

Somewhat Lower than CR1225

Somewhat Higher than CR1220

Compatibility

May Fit in CR1220 Slots

Standard Size

May Fit in CR1225 Slots

Device Considerations

Small devices with strict size constraints

General-purpose devices

Devices with slightly larger battery compartments

Chart 3: Comparison of CR1216, CR1220, and CR1225 Battery


Treatment of Battery Leakage


Dealing with a leaking CR1220 lithium battery involves several cautious steps to ensure safety. Leaks from these batteries can damage equipment and pose health risks.

Firstly, before handling a leaking battery, it's essential to wear the right personal protective equipment. This includes chemical-resistant gloves and safety goggles to prevent any of the battery's chemicals from contacting your skin or eyes, which could cause irritation or more severe chemical burns.

Secondly, ensure the area is well-ventilated. Leaking batteries can release harmful chemical gases, and working in a ventilated space minimizes the risk of inhaling these toxic fumes. Once the battery is safely removed from the device, immediately stop using the device to prevent further damage.

Next, handle the leaking battery gently to avoid further breakage or spreading of the chemicals. Once the battery is securely handled, do not dispose of it with regular waste. Due to the hazardous chemicals inside, it should be taken to a designated battery recycling facility, by local environmental regulations. This step is crucial for environmental protection and helps reduce pollution.

Finally, for cleaning the contaminated device, use a mild acidic solution like white vinegar or lemon juice. These natural solvents neutralize the alkaline substances from the battery leak and help remove any corrosion marks on the device. Gently wipe the affected area with a soft cloth, rinse thoroughly with clean water, and dry with a dry cloth or paper towel.

In summary, managing a leak in a CR1220 battery requires careful safety measures, including personal protection, adequate ventilation, proper disposal, and correct cleaning techniques. Following these steps ensures operator safety and minimizes environmental impact.


Battery Safety Issues


Using CR1220 batteries, including BR1220 and other similar button batteries, carries inherent risks, especially for children and pets, due to their small size and shiny appearance. To mitigate these risks, these batteries are encased in "child-safe" and "pet-safe" packaging to prevent accidental ingestion.

The compact and glossy nature of button batteries can attract the attention of children and pets, posing a significant ingestion risk. Once ingested, the chemical composition of lithium batteries can cause severe health issues even though they do not contain traditional toxic heavy metals like lead, cadmium, or mercury. When lithium comes into contact with body fluids, it can trigger a chemical reaction leading to severe chemical burns not just in the esophagus but potentially affecting the stomach and other internal organs as well. What's more, the hard casing of the battery moving through the digestive system can cause physical damage to soft tissues, including tears or perforations. These injuries can lead to serious health complications requiring emergency medical intervention.

In case of such emergencies, if you suspect that a battery has been swallowed, immediately contact emergency services or a doctor. Provide a detailed account of the incident and follow the medical professional’s instructions closely. While waiting for help or on the way to the hospital, avoid giving the affected individual any food or drink as this could worsen the chemical reaction and increase the risk of internal injuries.

Manufacturers and consumers must be aware of these risks and take preventive measures. These include ensuring batteries are stored out of reach of children and pets, using packaging that meets safety standards, and clearly warning of the dangers of battery ingestion in product instructions. Such precautions not only enhance the safety of battery usage but also help prevent potential severe health risks.


Conclusion


The CR1220 battery not only serves as a staple power source in numerous devices but also highlights the advancements in battery technology that cater to evolving electronic needs. Whether it's maintaining the functionality of a heart rate monitor or powering a remote control, the CR1220's balance of size, capacity, and energy efficiency makes it an integral component in the seamless operation of these devices. As electronic devices continue to evolve, understanding the capabilities and limitations of batteries such as the CR1220 will benefit future battery design and updates. This deep dive into the CR1220's characteristics serves as a guide for consumers and manufacturers alike, emphasizing the need for informed choices and awareness of safety in the utilization of battery technology.






Frequently Asked Questions [FAQ]


1. What battery can I use instead of CR1220?


CR1220-compatible batteries such as DL1220, ECR1220, or BR1220 can be used. These cells have similar size and electrochemical properties and can therefore be used interchangeably.

2. Is CR1216 the same as CR1220?


No, CR1216 is not the same as CR1220. Although they are both CR series batteries, the CR1216 is smaller (12.5 x 1.6 mm) and has a lower capacity (approximately 25 mAh), while the CR1220 is 12.5 x 2.0 mm and has a capacity typically between 35 and 40 mAh.

3. Can CR1220 replace CR1225?


Theoretically possible, but not recommended. Although the CR1220 and CR1225 are similar in size, the CR1225 has a larger capacity (about 50 mAh) and is thicker (2.5 mm) than the CR1220. Using the CR1220 in some equipment may result in poor contact or insufficient power.

4. What is the life expectancy of a CR1220 battery?


CR1220 battery life expectancy is typically 4 to 7 years, depending on battery storage and usage conditions. In high-quality products, the shelf life can be extended to 10 years.

5. Can CR1220 be recharged?


No, the CR1220 is a disposable lithium battery and cannot be recharged. Attempting to charge a non-rechargeable battery may result in battery damage or safety risks.

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