cr 2025 oder 2032
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CR 2025 vs. CR 2032: A Comparative Analysis of Lithium Coin Cells
Introduction
Lithium coin cells, commonly known as button batteries, are ubiquitous power sources found in a wide range of electronic devices, from watches and calculators to medical implants and automotive key fobs. Among the various sizes and types of lithium coin cells, CR 2025 and CR 2032 are two of the most widely used. This article provides a comprehensive comparison of CR 2025 and CR 2032 batteries, examining their key specifications, performance characteristics, and applications.
Physical Specifications
The primary difference between CR 2025 and CR 2032 batteries lies in their physical dimensions. CR 2025 batteries measure 20 mm in diameter and 2.5 mm in height, while CR 2032 batteries are slightly larger, measuring 20 mm in diameter and 3.2 mm in height. This difference in height results in a slight variation in weight, with CR 2025 batteries typically weighing around 2.8 grams and CR 2032 batteries weighing approximately 3.0 grams.
Electrical Specifications
In terms of electrical specifications, both CR 2025 and CR 2032 batteries have a nominal voltage of 3 volts. However, CR 2032 batteries have a slightly higher capacity, providing 225 mAh compared to 165 mAh for CR 2025 batteries. This difference in capacity translates into a longer operating life for CR 2032 batteries in applications where continuous power is required.
Performance Characteristics
The performance characteristics of CR 2025 and CR 2032 batteries vary depending on the specific application and operating conditions. In general, CR 2032 batteries offer superior performance in terms of discharge rate and shelf life.
Discharge Rate
CR 2032 batteries can deliver higher discharge currents compared to CR 2025 batteries. This makes them more suitable for applications where high power is required for short periods of time, such as in wireless sensors or camera flashes.
Shelf Life
CR 2032 batteries have a longer shelf life than CR 2025 batteries, typically ranging from 5 to 10 years compared to 3 to 5 years for CR 2025 batteries. This is due to the higher capacity of CR 2032 batteries, which allows them to maintain their charge for longer periods of time.
Applications
CR 2025 and CR 2032 batteries are used in a wide variety of applications, including:
CR 2025:
- Watches
- Calculators
- Key fobs
- Medical devices
- Small electronics
CR 2032:
- Wireless sensors
- Camera flashes
- Automotive key fobs
- Medical implants
- Larger electronics
Safety Considerations
Lithium coin cells, including CR 2025 and CR 2032 batteries, can pose a safety hazard if they are not handled or disposed of properly. The following safety precautions should be observed:
- Keep batteries out of reach of children.
- Never disassemble or attempt to recharge lithium coin cells.
- Dispose of used batteries promptly at designated recycling centers.
- If a battery is swallowed, seek immediate medical attention.
Conclusion
CR 2025 and CR 2032 lithium coin cells are two widely used power sources with distinct specifications and performance characteristics. CR 2025 batteries are smaller and lighter, while CR 2032 batteries offer higher capacity and longer shelf life. The choice between these two battery types depends on the specific application and operating requirements. By understanding the differences between CR 2025 and CR 2032 batteries, users can make an informed decision that ensures optimal performance and safety.
Closure
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