CR2450 and CR2032 are both battery specifications and belong to the CR family of non-rechargeable button batteries. Due to their similarities, they are often compared to each other. However, can they be used as equivalents? The answer is no. They cannot be used as substitutes for each other due to their differences in size and capacity. This article will provide a detailed explanation of the differences between CR2450 and CR2032, as well as the alternative models for CR2450.
What is a CR battery?
In general, the naming convention for batteries follows the IEC naming system, where each letter and number represents the following:
C represents the chemical composition, specifically Lithium Manganese Dioxide.
R, when placed after another letter, indicates a round-shaped battery with the chemical properties indicated by the first letter.
The numbers represent the diameter and thickness of the battery. For example, in CR2450, 2450 signifies a size of 24mm x 5.0mm.
CR2450
The CR2450 battery has a higher nominal voltage and energy density compared to other button lithium batteries, making it suitable for higher-power applications. The battery capacity of CR2450 is twice that of typical alkaline batteries. This type of battery typically operates at 3V and has a capacity ranging from 600-700mAh. It offers long life and stable voltage output characteristics. Additionally, CR2450 batteries have zero mercury content, making them environmentally friendly. One of the excellent features of CR2450 batteries is the long shelf life, for example, Panasonic's CR2450 button battery still has 90% of its initial capacity after 10 years of use.
CR2032
The CR2032 button battery is a common type of battery. It has a circular shape with a raised positive terminal, resembling the size and shape of a button, hence the name. It is widely used in various small electronic devices such as calculators, watches, remote access systems, smart cards, and more. The "20" in CR2032 represents a diameter of 20mm, and the "32" indicates a height of 3.2mm.
CR2450 vs. CR2032
Similarity
|
Feature |
CR2450 & CR2032 |
|
chemical component |
LiMnO2 |
|
Shape |
Circular |
|
Type |
non-rechargeable |
|
Voltage |
3V |
Note:
1 Although the battery composition of CR2032 and CR2450 is the same, the lithium content differs between the two batteries. The lithium content in CR2450 is higher than in CR2032, which results in a difference in capacity between the two button batteries.
2 When stored at room temperature, both CR2032 and CR2450 can have a usable lifespan of 8-10 years. However, the specific lifespan will still depend on their usage frequency.
Difference
|
CR2450 |
CR2032 |
|
|
Size |
The diameter is approximately 24.5 millimeters, and the thickness is approximately 5 millimeters. |
The diameter is approximately 20 millimeters, and the thickness is approximately 3.2 millimeters. |
|
Capacity |
600-700mAh |
200-250mAh |
|
Application |
Calculator, remote control, Bluetooth devices |
Watch, electronic scale, car key |
|
Weight |
6.9g |
3g |
From the differences between CR2450 and CR2032 specifications in the table above, we can draw the following conclusions:
1 The battery capacity of CR2450 is significantly larger than CR2032, which theoretically allows for longer usage time. If you are designing a project that requires more current or needs a battery for stable power supply, CR2450 is clearly the better choice.
2 CR2032 has a smaller size compared to CR2450, making it suitable for products with tighter space requirements and button-style designs. If your project requires a compact size and does not have high demands for battery capacity, CR2032 may be a more suitable choice.
3 CR2032 is thinner and lighter than CR2450, making it more suitable for lightweight and small electronic devices. On the other hand, CR2450 is commonly used in devices that require higher energy density and prolonged usage.
Can CR2032 replace CR2450?
No. CR2450 and CR2032 are not interchangeable. CR2032 and CR2450 have the same nominal voltage (i.e. 3v) and the same chemical composition. However, according to the COMSAN battery standard, the CR2032 and CR2450 battery sizes and capacities are not the same, and the two belong to different models of products, so CR2032 can't replace CR2450.
The battery compartment for any application has a default size, and the CR2450's size is larger than the CR2032, and the CR2032's battery compartment is not compatible with the CR2450. The CR2450 battery capacity is also much larger than the CR2032, if it is applied to the CR2032 device, it will cause excessive power, heat surge and other security risks. Therefore, when purchasing these two kinds of batteries, it is necessary to confirm whether they can be fully applicable to the use of primary batteries.
Can CR2430 replace CR2450?
No, CR2430 cannot directly replace CR2450. While both CR2430 and CR2450 batteries have similar dimensions and voltage (3V), they differ in terms of capacity and thickness. The CR2450 battery is thicker and has a higher capacity compared to the CR2430 battery. Therefore, using a CR2430 battery instead of a CR2450 may result in insufficient power supply and shorter usage time. It is important to use the correct battery specified for the device to ensure proper functionality and compatibility.
CR2450 equivalent
The CR2450 is not compatible with other battery types, but in some cases can be replaced with a model with similar specifications.
For example, BR2450 is a cadmium-mercury-free lithium battery specification that is very similar in capacity to CR2450, but it has a slightly higher voltage. Because it is a cadmium-mercury free battery, it has less impact on the environment. However, due to the difference in voltage, using BR2450 may have a slight impact on the device, so you should first verify that the device supports this alternative type.
In addition, there are several common equivalent models of the CR2450, all of which have a nominal voltage of 3V and have similar battery specifications:
DL2450
EC2450
KL2450
LM2450
ALSO READ: Lithium CR2450 Battery - Brands, Equivalents, and Replacements
CR2450 & CR2032 Button battery life
The effect of use environment on battery life
The service life of CR2450 & CR2032 batteries is affected by many factors, the most important of which is the use environment. For example, if the battery is used in an extremely high or low temperature environment, its life may be greatly reduced. Similarly, if the battery is stored in a humid environment, its capacity will also decrease.
Correct use
In addition to environmental factors, proper use can also extend the service life of CR2450 & CR2032 batteries. For example, when the battery is not in use, it should be removed from the device to avoid wasting power. In addition, the appropriate load current should be selected to avoid excessive battery discharge.
Storage mode
The way CR2450 & CR2032 batteries are stored also has an impact on their service life. In general, batteries are best stored in a dry, cool place without direct sunlight. If the battery is not used for a long time, its voltage should be checked regularly and ensure that it is within the normal range.
It should be noted that as the CR2450 & CR2032 battery nears its useful life, its output voltage will drop. If the device shows signs of low power, the battery may need to be replaced.
In addition, in order to ensure safety, the use of small electronic devices should strictly follow the equipment manufacturer's instructions to avoid problems such as short circuit or excessive discharge of the battery.
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