watt-hour

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watt-hour

[′wät ¦au̇r]
(electricity)
A unit of energy used in electrical measurements, equal to the energy converted or consumed at a rate of 1 watt during a period of 1 hour, or to 3600 joules. Abbreviated Wh.

watt-hour

A unit of work equal to 3,600 joules; equivalent to the power of 1 watt operating for a period of 1 hour.

watt-hour

The power utilization for one hour measured in watts. Abbreviated "Wh," it is widely used to rate how long it takes for a battery to discharge. For smaller batteries, a milliwatt-hour (mWh) rating is used. For example, a 500 mWh battery means it will release 500 watts at a specific voltage for one hour before it is discharged. See ampere-hour and watt.
References in periodicals archive ?
After it goes into operation, the wind farm will produce some 100,000 gigawatthours of electricity per annum, sufficient to supply around 24,000 homes.
A 2001 study from the Forest Service's Center for Urban Forest Research in Davis, California, found that increasing urban tree cover in the United States by 50 million trees over the next 15 years could save 6,100 gigawatthours of energy, the output of seven power plants.