milliampere hours

**Post Tag Description: milliampere hours**

Milliampere hours (mAh) is a unit of electric charge commonly used to describe the capacity of rechargeable batteries, especially in portable electronic devices such as smartphones, tablets, and laptops. It indicates how much current a battery can supply over a specified period, reflecting the battery’s energy storage and overall runtime. Understanding mAh ratings helps users compare battery performance and estimate how long a device can operate before needing a recharge.