ampere hour
/ˈæmpɪr ˌaʊər/
noun
- A unit of electric charge equal to the amount of charge transferred by a steady current of one ampere flowing for one hour.
- The battery has a capacity of 50 ampere-hours, enough to power the device for a full day.
- Electric car batteries are often rated in kilowatt-hours, but the underlying measurement is in ampere-hours.
- When shopping for a backup power supply, check the ampere-hour rating to see how long it will last.
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