Cell battery size is typically indicated by a code printed directly on the battery itself, where letters denote the chemistry and numbers specify the dimensions.
Here's a breakdown:
-
Letter Codes (Chemical Composition): These letters indicate the type of battery chemistry used. Common examples include:
- LR: Alkaline battery.
- CR: Lithium battery.
- SR: Silver oxide battery.
-
Number Codes (Dimensions): The numbers generally provide information about the battery's physical size, specifically its diameter and height in millimeters. For example:
- CR2032: This signifies a lithium (CR) battery with a diameter of 20mm and a height of 3.2mm.
- CR2025: This signifies a lithium (CR) battery with a diameter of 20mm and a height of 2.5mm.
To determine the size of your cell battery:
- Locate the Code: Look for the alphanumeric code printed on the battery's surface.
- Identify the Chemistry: The letters at the beginning of the code will tell you the battery's chemical composition (e.g., LR, CR, SR).
- Determine the Dimensions: The numbers typically indicate the diameter and height in millimeters.
Example:
If you see "CR2032" printed on your button cell battery, you know it is a lithium battery that is 20mm in diameter and 3.2mm thick.
