“Ah” stands for “ampere-hour” on a battery. It is a unit of electric charge that indicates the battery’s capacity to store and deliver electrical energy. Specifically, it measures how much current a battery can provide over a period of one hour.
For example, a battery rated at 10 Ah can theoretically supply 10 amperes of current for one hour, or 1 ampere of current for 10 hours, or any other combination that multiplies to 10 (e.g., 2 amperes for 5 hours). This rating helps users understand how long a battery will last under a certain load.
Keep in mind that actual performance may vary based on factors such as temperature, age of the battery, and the specific characteristics of the device being powered.