Batteries are essential components that power many of the everyday devices we rely on, from calculators to car key fobs. One of the most common and versatile battery types is the CR1632, a small coin cell battery that plays a crucial role in various electronic devices. This article will dive into the details of the CR1632 battery, its equivalents, pinout, and the wide range of applications it serves in modern electronics.
What is a CR1632 Battery?
The CR1632 is a lithium-based coin cell battery with a nominal voltage of 3 volts. The "CR" designation refers to the chemistry of the battery—lithium manganese dioxide (LiMnO2), which provides a high energy density in a small package. The numbers "1632" refer to the size of the battery: 16 millimeters in diameter and 3.2 millimeters in thickness. This small size and lightweight design make it ideal for use in devices where space is limited.
In terms of capacity, the CR1632 typically offers around 120-130 mAh, which is sufficient for powering low-drain devices over extended periods. This is why you'll find it in applications that require long battery life without frequent replacement.
CR1632 Dimensions
Dimensions
CR1632 Battery Equivalents
In the world of batteries, there are many different types that are functionally equivalent to the CR1632. Although these batteries may have different model names, they share the same size, voltage, and similar chemistries. Understanding the equivalents of the CR1632 can help when it comes time to replace the battery, ensuring compatibility with your device.
Here are some common equivalents to the CR1632 battery:
• DL1632: A common alternative made by Duracell. It’s identical in size and capacity to the CR1632 and provides the same performance.
• ECR1632: Manufactured by Energizer, this is another direct equivalent.
• BR1632: A Panasonic-branded coin cell battery that offers a slightly different chemistry, but it is often interchangeable with the CR1632.
• KCR1632: This is a popular equivalent made by other manufacturers, such as Kodak.
Although these batteries are functionally equivalent, it’s important to check the datasheet and manufacturer recommendations to ensure compatibility with your device, especially in cases where battery chemistry may slightly vary.
CR1632 Battery Pinout
The pinout for the CR1632 is very simple, as this is a small coin cell battery. Like most coin cells, the CR1632 has a positive terminal (the top) and a negative terminal (the bottom).
1. Positive Terminal (+): The positive terminal is the flat side of the coin cell. This side is typically marked with the manufacturer's logo, as well as a “+” sign to indicate the positive pole.
2. Negative Terminal (-): The negative terminal is the opposite side, often a shiny metallic surface. There may be a small vent hole to help relieve any internal pressure buildup in the event of a short circuit or over-discharge.
CR1632 CAD Model
Symbol
Footprint
To use the CR1632 in a device, you’ll need to make sure the positive terminal is aligned with the corresponding contact point in the device, ensuring proper electrical connections. In devices like remote controls or motherboards, the battery is usually secured in a spring-loaded battery holder that ensures good contact.
Applications of the CR1632 Battery
The CR1632 coin cell battery’s small size and reliable performance make it a preferred power source for a variety of consumer electronics. Here are some common applications:
1. Watches
The CR1632 battery is often used in wristwatches, particularly digital or sports models. Since these devices require long battery life but low power consumption, the CR1632 is ideal. It offers several months or even years of usage before needing a replacement.
2. Remote Controls
CR1632 batteries are commonly used in remote controls for devices like TVs, air conditioners, and car key fobs. These devices have minimal power requirements but need to operate consistently over time, making a lithium coin cell a suitable choice.
3. Motherboards and Computer Hardware
Many computer motherboards use CR1632 batteries to power the CMOS memory. This battery allows the motherboard to retain BIOS settings and system clocks even when the computer is turned off. The CR1632 is a reliable solution because of its long-lasting power and small footprint.
4. Toys and Gadgets
Various small gadgets, including toys, also make use of the CR1632 battery. From LED toys to musical greeting cards, these low-drain devices benefit from the long shelf life of the CR1632.
5. Hearing Aids
CR1632 batteries are sometimes used in hearing aids, as they provide a compact power source for small devices with moderate energy needs.
6. Keyless Entry Systems
Many modern car key fobs and keyless entry systems use the CR1632 battery to enable wireless communication between the device and the car or door lock. The battery's small size makes it easy to fit into compact, portable systems.
7. Fitness Trackers and Health Devices
Fitness trackers and medical devices like glucose meters often rely on CR1632 batteries. These devices need batteries that can last for long periods without frequent changes, making the CR1632 an ideal solution.
8. Calculators
Some scientific calculators, particularly the smaller models, use CR1632 batteries. Given the minimal power needs of a calculator, the CR1632 is an excellent option for providing power for extended periods.
9. Medical Devices
Certain medical devices, such as blood pressure monitors and glucose meters, require a steady, reliable power source. The CR1632 is an ideal choice for these applications due to its long shelf life and relatively high capacity in a compact form.
Conclusion
The CR1632 battery is a small yet powerful component used in a wide array of consumer electronics. Its long-lasting performance, compact size, and relatively low cost make it an excellent choice for devices that require minimal power but depend on reliable, long-term functionality. Whether it's powering your watch, key fob, motherboard, or fitness tracker, the CR1632 offers consistent power and ease of use. By understanding its equivalents, pinout, and common applications, you can make informed decisions when selecting and replacing CR1632 batteries for your devices.
Always make sure to use the correct equivalent and handle the battery safely to maximize both performance and lifespan.
Frequently Asked Questions
1. What is the difference between CR1632 and CR2032? Interchangeable?
1632 and 2032 are the dimensions (models) of the two-button batteries. 1632 means the maximum diameter is 16mm and the thickness is 3.2mm; 2032 means the maximum diameter is 20mm and the thickness is 3.2mm; the voltage of the two batteries is the same, the shape is similar, the biggest difference is The diameter is different. This kind of battery needs to be equipped with a special battery holder when installation. The size is fixed, and only a certain fixed size (model) can be installed. It is not universal and cannot be interchanged.
2. If two CR1632 button batteries are used overlappingly, does the power double?
Button batteries are the same as other batteries. When they are connected in series, the voltage is added and the current is unchanged; when they are connected in parallel, the voltage is unchanged and the current is added. For overlapping use, it should be connected in series, with the voltage doubled and the current unchanged.
3. Can button battery CR1632 replace CR1620?
It cannot be replaced because the sizes of the two different types of button batteries are different. The voltage of the two-button batteries is 3V, but the specifications and capacities are different, depending on the product used. The size and capacity of the two batteries:
(1) CR1620 size: 16.0 * 2.0MM, capacity: 70 mA
(2) CR1632 size: 16.0 * 3.2MM, capacity: 120 mA.
Written by Icey Ye from AIChipLink.
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