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Milliamp Hour (mAh) An Milliamp Hour(mAh) is a unit for measuring electric power over time. mAh is commonly used to describe the total amount of energy a battery can store at one time. It's the easiest way to distinguish the strength or capacity of a battery. The higher the mAh, the longer the battery will last.
it stands for milli amp hours which is the current that the battery can supply over time.you can up the batteries mah if you stay with the same voltage-this will make the device work longer jeffyukon Â· 1 decade ago