When it comes to small electronic devices, the type of battery you choose can have a significant impact on performance and longevity. Among the most commonly used coin cell batteries are the CR2450 and CR2032, which are often found in everything from watches and fitness trackers to calculators, remote controls, and even medical devices. But despite both being lithium coin batteries, they aren’t identical, and choosing the wrong one can lead to issues such as poor performance or, in some cases, device malfunction.
In this article, we’ll explore the key differences between the CR2450 and CR2032 batteries, covering aspects such as size, capacity, voltage, and applications. By the end, you’ll be well-informed and equipped to make the right decision for your devices.
1. Size and Dimensions
One of the most obvious differences between the CR2450 and CR2032 batteries is their size.
• CR2450: The CR2450 is slightly larger, with a diameter of 24.5 mm and a thickness of 5.0 mm.
• CR2032: In contrast, the CR2032 has a diameter of 20 mm and a thickness of 3.2 mm.
The difference in size means that the CR2450 is generally better suited for devices that require a larger battery with more space, while the CR2032 is ideal for devices with limited space or slimmer battery compartments.
2. Capacity and Battery Life
The capacity of a battery refers to how much charge it can hold and, consequently, how long it will power a device before needing replacement. This is typically measured in milliampere-hours (mAh).
• CR2450: The CR2450 typically has a capacity of about 620 mAh.
• CR2032: The CR2032 generally offers a capacity of around 220 mAh.
The CR2450’s higher capacity means it can last much longer than the CR2032 in most applications. However, the battery life of both types can depend on the power consumption of the device they’re used in. For example, a fitness tracker that uses a lot of power may drain a CR2032 faster than a watch with low power consumption.
3. Voltage and Power Output
Both the CR2450 and CR2032 batteries operate at the same voltage of 3 volts. This means they deliver the same amount of electrical power, making them compatible for many of the same devices. However, while the voltage is the same, the higher capacity of the CR2450 allows it to maintain a steady voltage for a longer period, making it more suitable for devices that require a consistent power supply over time.
4. Weight
Given the difference in size, it’s no surprise that the CR2450 also weighs a little more than the CR2032.
• CR2450: Weighs around 6.5 grams.
• CR2032: Weighs approximately 3 grams.
In most applications, the weight difference is negligible. However, if the weight of your device is critical (for example, in small wearable devices), this may be something to consider when choosing a battery.
5. Price
The CR2450 is generally more expensive than the CR2032, given its larger size and higher capacity. The price difference isn’t vast, but it’s important to take into account if you’re buying in bulk or looking to replace batteries in several devices.
In terms of cost-effectiveness, the CR2032 is often a more economical choice for devices that do not require as much power or battery life. For devices with a higher power demand, the CR2450 is likely the better option, despite the slightly higher price.
6. Common Uses and Applications
While both batteries can be used in a wide range of devices, their size and capacity make them more suitable for different applications.
• CR2450: The CR2450 is typically used in devices that require more power or a longer battery life. This includes:
Fitness trackers: Devices that monitor activity, heart rate, or sleep require more energy.
Medical devices: Some glucometers, thermometers, and other medical tools use the CR2450 for its extended battery life.
Toys and gadgets: Devices like electronic toys or remotes often use this larger battery for longer runtime.
• CR2032: The CR2032 is more commonly used in low-energy devices where space is at a premium. Examples include:
Watches: Many watches, including digital watches and wristwatches, rely on the CR2032 for a compact and long-lasting power source.
Remote controls: TV remotes, key fobs, and other remote devices often use the CR2032.
Motherboards and computers: The CR2032 is frequently used as the coin cell battery for keeping the time on computer motherboards.
Calculators: Many calculators use the CR2032 for its efficiency and long life.
7. Environmental Considerations
Both the CR2450 and CR2032 are lithium-based batteries, and like all batteries, they should be disposed of properly. Lithium batteries can be harmful to the environment if thrown away improperly, and many places offer recycling programs specifically for coin cell batteries. It’s a good idea to check your local recycling guidelines or take advantage of drop-off points for used batteries.
8. Choosing the Right Battery
When deciding between the CR2450 and CR2032, the most important factors to consider are the size of the battery compartment, the power consumption of your device, and the required battery life.
• If your device is compact or thin, such as a small watch or remote, the CR2032 is likely the better option.
• If your device requires longer battery life or more power, such as a fitness tracker or medical device, you’ll want to opt for the CR2450.
It’s always best to refer to your device’s manual or manufacturer guidelines to determine which battery is best suited for your specific needs.
Conclusion
The CR2450 and CR2032 batteries are both commonly used lithium coin cell batteries, but they differ in size, capacity, weight, and intended use. The CR2450 is larger, has more capacity, and is suited for devices that need more power or a longer battery life. On the other hand, the CR2032 is smaller, lighter, and ideal for low-power devices with limited space. Understanding these differences will help you select the right battery for your device, ensuring optimal performance and longevity.
Faqs
Question 1: Is it possible to use CR2032 instead of CR2450?
Answer: CR2032 batteries should not be used instead of CR2450 batteries. Batteries with the CR2450 type have a higher voltage and larger capacity than batteries with the CR2032 type. In devices that require CR2450 batteries, CR2032 batteries may be less efficient and have shorter battery lifetimes.
Question 2: What is the life expectancy of a CR2032 battery?
Answer: CR2032 battery life varies depending on how much power the device consumes and how it is used. The CR2032 battery can last for several months to several years in low-power devices like calculators and small electronic gadgets. Keyless entry systems, for example, may have a shorter battery life because they consume more power.
Question 3: How to test a 2450 battery?
Answer: The voltage measurement mode on a multimeter or a battery tester can be used to test a CR2450 battery. Tester or multimeter leads should be connected to the battery terminals correspondingly. Battery voltage will be displayed, indicating how much charge the battery has left.
Question 4: Can 2032 batteries touch each other?
Answer: If two CR2032 batteries are directly in contact, the batteries could short circuit and potentially be damaged. Batteries should not have their positive and negative terminals in contact with one another.
Written by Icey Ye from AIChipLink.
AIChipLink, one of the fastest-growing global independent electronic component distributors in the world, offers millions of products from thousands of manufacturers. Whether you need assistance finding the right part or electronic components manufacturers for your design, you can contact us via phone, chat or e-mail. Our support team will answer your inquiries within 24 hours.
