Button cell batteries are an indispensable power source for a wide range of electronic devices, from watches and calculators to medical equipment and wireless sensors. These compact, cylindrical batteries feature unique specifications that determine their performance and suitability for different applications. Understanding these specifications is crucial for selecting the right battery for specific needs.
Button cell batteries come in a range of voltages, typically from 1.5V to 3V. The most common voltage is 1.5V, which is found in silver-oxide and alkaline batteries. Other voltages include:
Capacity refers to the amount of electrical charge a battery can store. It is measured in milliamp-hours (mAh). The higher the mAh rating, the longer the battery will last. Button cell batteries typically have capacities ranging from 10mAh to 300mAh.
Button cell batteries are available in a variety of sizes, characterized by their diameter and height. The most common sizes are:
Diameter (mm) | Height (mm) |
---|---|
7 | 2.5 |
9 | 3.15 |
11 | 4.2 |
12 | 5.4 |
20 | 3.2 |
Button cell batteries use different chemical compositions, which affect their performance characteristics:
Button cell batteries have specific operating temperature ranges that affect their performance. Typically, they operate within:
Button cell batteries play a vital role in powering various devices due to their:
Pros:
Cons:
Button cell batteries offer a reliable and efficient power source for a wide range of electronic devices. By understanding their key specifications, such as voltage, capacity, size, chemistry, and operating temperature, you can select the most suitable battery for your specific needs. Proper battery care, including storage in appropriate conditions and avoiding common mistakes, can significantly extend battery life and enhance device performance.
Diameter (mm) | Height (mm) |
---|---|
7 | 2.5 |
9 | 3.15 |
11 | 4.2 |
12 | 5.4 |
20 | 3.2 |
Chemistry | Nominal Voltage (V) |
---|---|
Silver-oxide | 1.55 |
Alkaline | 1.50 |
Lithium | 3.00 |
Zinc-air | 2.70 |
Chemistry | Capacity Range (mAh) |
---|---|
Silver-oxide | 10-50 |
Alkaline | 50-100 |
Lithium | 100-300 |
Zinc-air | 500-1000 |
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