1. Battery Size and Dimensions

• CR2450: The "24" in CR2450 denotes its diameter, which is 24 millimeters, and the "50" represents its thickness, measured at 5.0 millimeters.
• CR2032: The "20" indicates its diameter (20 millimeters), and the "32" signifies its thickness (3.2 millimeters).
• The larger size of the CR2450 means it has more space to store energy, which translates to a higher capacity compared to the CR2032.

2. Battery Capacity

•CR2450: Due to its larger size, the CR2450 typically has a higher capacity. It can store more energy, making it suitable for devices that require longer-lasting power. The capacity of a CR2450 battery can range from 240mAh to 620mAh.

•CR2032: While smaller in size, the CR2032 has a lower capacity compared to the CR2450. It is commonly used in devices with lower power requirements and limited space. The CR2032 battery has a capacity of about 240mAh.

3. Voltage

Both the CR2450 and CR2032 are lithium coin cell batteries and typically have a nominal voltage of 3 volts when new. However, this voltage decreases gradually as the battery discharges.

4. Interchangeability

While CR2450 and CR2032 batteries share the same voltage and chemistry, they are not always interchangeable due to their differences in size and capacity.

•CR2032 in a CR2450 device: CR2032 batteries are thinner and may fit into devices designed for CR2450 batteries, but they may not provide sufficient power or runtime.

•CR2450 in a CR2032 device: Conversely, CR2450 batteries are thicker and may not fit into devices designed for CR2032 batteries.

5. Applications

•CR2450: Due to its larger capacity, the CR2450 is commonly used in devices that require more power and longer runtime. These may include key fobs, digital scales, medical devices, and certain types of remote controls.

•CR2032: The smaller size of the CR2032 makes it suitable for compact devices with lower power requirements. Typical applications include watches, calculators, small sensors, and memory backup in computers.

6. Weight

•CR2450: The CR2450 battery weighs around 6.3 grams.

•CR2032: The CR2032 battery weighs around 3.1 grams.

7. Operating Temperature Range

•CR2450: The operating temperature range for the CR2450 battery is typically -40°C to 85°C (-40 to 185°F).

•CR2032: The operating temperature range for the CR2032 battery is typically -20°C (-4°F) to 70°C (158°F).

8. Shelf Life

Both CR2450 and CR2032 batteries have a shelf life of around 10 years when stored properly.

9. Chemical Composition

Both CR2450 and CR2032 batteries use lithium manganese dioxide (LiMnO2) as their primary chemical composition. This chemistry provides a high energy density, which is why these batteries can last a long time.

10. Rechargeability

Neither the CR2450 nor the CR2032 batteries are rechargeable. Once they are depleted, they need to be replaced.

Conclusion

In summary, while the CR2450 and CR2032 batteries share some similarities, such as their voltage and chemical composition, they have significant differences in size, capacity, and weight. These differences make them suitable for different types of devices and applications. The CR2450 is ideal for devices that require more power and longer runtime, while the CR2032 is better suited for compact devices with lower power requirements.

If you have specific requirements for a battery, it's essential to consider these factors to ensure you choose the right one for your needs.

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