The cell in a watch is called a button cell, also known as a watch battery or coin battery.
Understanding Watch Batteries
A button cell is a small, single electrochemical cell shaped like a squat cylinder. These cells typically range from 5 to 25 mm in diameter and 1 to 6 mm in height, giving them a button-like appearance. They are commonly used to power small electronic devices like watches.
Key Characteristics of Button Cells
- Size: Diameters usually between 5 and 25 mm, and height between 1 and 6 mm.
- Shape: Small, squat cylindrical shape resembling a button or coin.
- Use: Commonly found in watches, calculators, and small portable devices.
- Construction: Single electrochemical cell.
Different Names for Watch Batteries
It's essential to be aware that the battery in a watch might be referred to using different names:
- Button Cell: Due to its button-like shape.
- Watch Battery: A specific term emphasizing its use in watches.
- Coin Battery: Another descriptive name due to its coin-like appearance.
Practical Insights
- When replacing a watch battery, it is crucial to ensure you use the correct size and type of button cell to ensure proper functioning of the watch.
- These batteries have different chemical compositions, each with unique performance characteristics, including voltage and lifespan.
