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.

Word History and Origins

Origin of ampere-hour¹

First recorded in 1880–85

Example Sentences

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

From Project Gutenberg

The ampere-hour capacity of these batteries varies from 6 ampere hours to 4,000 ampere hours, respectively, when used at an average 8-hour discharge rate.

From Project Gutenberg

If a battery gives its rated ampere-hour capacity on discharge, we do not care particularly how the voltages of the individual positive and negative groups change.

From Project Gutenberg

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

From Project Gutenberg

The ampere-hour is the quantity of electricity transferred by a current of 1 ampere in 1 hour and is, therefore, equal to 3600 coulombs.

From Project Gutenberg