ampere-hour

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ampere-hour

[′am‚pir ¦au̇·ər]
(electricity)
A unit for the quantity of electricity, obtained by integrating current flow in amperes over the time in hours for its flow; used as a measure of battery capacity. Abbreviated Ah; amp-hr.

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.
References in periodicals archive ?
Size/Group Amp-Hour Dimensions M17 17 7" L, 3" W, 6.
A fact: Batteries are rated in amp-hours, a quantity of "juice.
This doubles your run-time and makes the amp-hour rating and longevity less important.
The automaker launched a larger battery pack last year, increasing from 60 amp-hours to 94 amp-hours and improving electric range from 81 miles to 114 miles.
the quantity and rated amp hours of the bank are eight (8) batteries, three (3) cells per jar, two (2) volts per jar, and 150 amp-hours.
The NexSys 558-AH battery consists of six 12-volt 186-AH blocs connected in series/parallel to achieve 24-volts and 558 amp-hours.
SPY maintenance free batteries are rated for eight amp-hours.