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watt-hour
(redirected from Watt hour)

    Also found in: Dictionary/thesaurus, Acronyms, Wikipedia 0.01 sec.
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.
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.
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