Answer
Aug 20, 2025 - 09:29 AM
The numbers on a battery typically indicate its size, capacity, and voltage. Commonly, these numbers might include a series code (such as AA, AAA, or 18650) that denotes the battery's size and shape, as well as additional numbers that specify its milliamp-hour (mAh) rating, which reflects the battery's capacity or how long it can power a device, and voltage, which indicates the electrical potential. Understanding these numbers helps ensure compatibility with devices and informs users about how long the battery might last.
