What is the meaning mAh in battery?

mAh stands for milliampere-hour, a unit of measurement that indicates a battery's capacity to store energy. It represents the amount of current a battery can provide over a specific period; for example, a battery rated at 1000 mAh can theoretically deliver 1000 milliamperes of current for one hour. Higher mAh ratings generally indicate longer battery life for devices, assuming consistent power consumption.