Ampere-hour
From Wikipedia, the free encyclopedia
An ampere-hour (abbreviated as Ah or A-h is a unit of electric charge. One ampere-hour is equal to 3600 coulombs (ampere-seconds), and is the amount of electric charge transferred by a steady current of one ampere for one hour.
The ampere-hour is a unit frequently used in measurements associated with electrochemical proceses such as electroplating and electrical batteries. Although it is not a direct measure of the energy in a battery (like the joule (J) or watt-hour (Wh)), it is a common rating of how long a battery will last (or in the case of a rechargeable battery, how long it will last when fully charged).
The commonly seen milliampere-hour (mAh) is equal to 3.6 coulombs.
