mAh - Page 3

mAh, or milliampere-hour, is a unit of electric charge commonly used to measure the capacity of batteries. It indicates how much current a battery can supply over the period of an hour. Specifically, one mAh represents the ability to deliver a current of one milliampere (0.001 amperes) for one hour. For example, a battery rated at 2000 mAh can theoretically provide 2000 milliamperes for one hour, or 1000 milliamperes for two hours, before being depleted. This measurement is crucial for understanding how long a battery can power a device under specific conditions, making it an essential factor when evaluating battery life in various applications such as smartphones, laptops, and electric vehicles.