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Battery Cr 2025 Versus Cr 2032

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battery cr 2025 versus cr 2032

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CR2025 vs. CR2032: An In-Depth Comparison of Coin Cell Batteries

CR2025 vs. CR2032 Batteries: What is the Difference? - ElectronicsHacks

Coin cell batteries, also known as button cells, are compact and lightweight power sources commonly used in various electronic devices, such as watches, calculators, key fobs, and medical sensors. Among the most popular coin cell types are the CR2025 and CR2032, both of which are lithium-based batteries. While they share similarities in terms of their chemical composition, there are key differences between these two batteries that influence their performance and suitability for specific applications.

Physical Characteristics

One of the most noticeable differences between the CR2025 and CR2032 batteries is their physical size. The CR2025 has a diameter of 20mm and a thickness of 2.5mm, while the CR2032 is slightly larger, with a diameter of 20mm and a thickness of 3.2mm. This difference in thickness results in a higher volume and, consequently, a greater capacity for the CR2032 battery.

Capacity and Voltage

The capacity of a battery refers to the amount of charge it can store, measured in milliampere-hours (mAh). The CR2025 has a typical capacity of around 165mAh, while the CR2032 boasts a higher capacity of approximately 225mAh. This means that the CR2032 can provide power for longer periods or to devices with higher power requirements.

Both CR2025 and CR2032 batteries have a nominal voltage of 3 volts. This voltage remains relatively stable throughout the battery’s discharge cycle, providing a consistent power source for the connected device.

Discharge Characteristics

The discharge characteristics of a battery determine how it performs over time. The CR2025 and CR2032 batteries have different discharge curves, affecting their suitability for specific applications.

The CR2025 battery exhibits a relatively flat discharge curve, meaning that it maintains a steady voltage for a longer period. This makes it ideal for devices that require a consistent power supply, such as watches or calculators.

In contrast, the CR2032 battery has a more sloping discharge curve, indicating a gradual decline in voltage over time. This characteristic is beneficial for applications where the device’s power consumption is variable or where a sudden drop in voltage could be detrimental.

Shelf Life

Shelf life refers to the period during which a battery can be stored without significant loss of capacity. Both CR2025 and CR2032 batteries have an extended shelf life, typically around 10 years when stored under proper conditions. However, the CR2032 battery may have a slightly longer shelf life due to its larger capacity and higher energy density.

Applications

The choice between CR2025 and CR2032 batteries depends on the specific application requirements. Here are some examples of typical applications for each battery type:

  • CR2025: Watches, calculators, key fobs, small electronic devices
  • CR2032: Medical sensors, wireless devices, toys, cameras, automotive electronics

Conclusion

CR2025 and CR2032 batteries are both reliable and versatile power sources for a wide range of electronic devices. While they share similarities in their chemical composition and voltage, their differences in physical size, capacity, discharge characteristics, and shelf life make them suitable for different applications. By understanding these differences, you can make an informed decision when selecting the appropriate battery for your specific needs.

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