What does 2000mAh mean?

2000mAh stands for 2000 milliampere-hours, which is a unit of electrical charge that indicates the capacity of a battery. It represents the amount of current a battery can provide over a specific period; for example, a 2000mAh battery can theoretically deliver 2000 milliamperes (or 2 amperes) for one hour. A higher mAh rating generally means a longer-lasting battery for devices, provided that the power consumption remains constant.