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ampere-hour

[ am-peer-ouuhr, -ou-er, am-peer- ]

noun

, Electricity.
  1. a unit of electric charge noting the amount of electricity transferred by a current of one ampere in one hour, equal to 3600 coulombs. : Ah, a.h., amp-hr, amp. hr.


ampere-hour

noun

  1. a practical unit of quantity of electricity; the quantity that flows in one hour through a conductor carrying a current of 1 ampere. 1 ampere-hour is equivalent to 3600 coulombs a.h.
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of ampere-hour1

First recorded in 1880–85
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Example Sentences

The storage battery used should be of the four-volt forty-ampere hour variety.

It should register in amperes, one-eighth of the ampere-hour capacity of the battery, as already explained.

One ampere-hour is simply another way of saying 3,600 coulombs.

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ampereAmpère's law