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ampere-hour
(redirected from Milliamp-hour)

    Also found in: Wikipedia 0.10 sec.

ampere-hour

A current flow for one hour measured in amperes (amps). Abbreviated "Ah" and commonly called "amp-hour," it is widely used to rate how long it takes for a battery to discharge. For smaller batteries, a milliampere-hour (mAh) rating is used. For example, a 500 mAh battery means it will release 500 milliamps of current at a specific voltage for one hour before it is discharged. See ampere.

Amp-Hours and Watt-Hours
Batteries can be rated in amp-hours (Ah) or watt-hours (Wh) as shown in these examples for a digital camera. The bottom battery is equivalent to 3.3 Wh, while the top battery is equivalent to 667 mAh.



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Most AA-rechargeables have a milliamp-hours (mAh) rating; the higher the number, the longer a battery will perform between rechargings.
Kodak's Monthly Tech Brief Removes the Milli-Amp Mystery of Digital ... by Business Wire
A lithium primary cell, the CR1605 WaferThin has a nominal voltage of 3 volts and a capacity of 12 milliamp-hours, and the CR2005 WaferThin has a capacity of 22 milliamp-hours.
Micron Communications, Inc., announces WaferThin coin cell prototype by Business Wire
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