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What Is mAh? mAh means milliamp Hour and is a unit that measures (electric) power over time. It is commonly used to measure the energy capacity of a battery. In general, the more mAh and the longer the battery capacity or battery life.
In the case of PDA Batteries, a milliAmp hour (mAh) is most commonly used notation system. Note that 1000 mAh is the same a 1 Ah. (Just as 1000mm equals 1 meter.) Note that Amp hours do not dictate the flow of electrons at any given moment, that is the role of volts. PDA batteries with a 1 Amp hour rating could deliver Â½ Amp of current for 2 hours, or they could provide 2 Amps of current for Â½ hour.