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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

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.
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References in periodicals archive ?
If the television is on for four hours and consumes 65 watts, write 260 watt-hours in the daily column.
Energy generation jumped from 400 to 800 watt-hours.
Existing lead-acid storage batteries that can power a car for 60-80 miles between charges have an energy density of about 35 watt-hours per kilogram.
More specifically, InSight generated 4,588 watt-hours on its first sol (Martian day), which is significantly more than the 2,806 watt-hours Curiosity generated during its stay on the Red Planet.
Specifically, advanced carbon fluoride batteries have a volumetric energy density of 700 to 1000 Watt-hours per liter (Wh/l) compared to manganese dioxide's typical 500-650 Wh/1 in the form factors commonly used in medical implants.
Approximately two shot glasses of ethanol could yield enough hydrogen to generate 350 watt-hours of electricity, enough to power half a dozen 60-watt lightbulbs for an hour.
In terms of batteries, the Apple Watch 2 could be sporting a thicker battery pack that has a 1.28 watt-hours capacity, and this is a significant upgrade compared to the Apple Watch's thinner battery pack with 0.94 watt-hours capacity. 
Providing remote devices using energy harvesting such as wireless sensor nodes and other micro-systems with onboard power storage, the THINERGY family of thin and flexible micro-energy cell (MEC) products from Infinite Power Solutions provide tens of Watt-hours of energy, equivalent to or more than traditional primary cells that are hundreds of times larger in total volume.
According to a report in New Scientist, during the storm, the amount of energy available to the craft dropped to an unsustainable 89 watt-hours, the lowest level seen since Spirit and its twin, Opportunity, landed on Mars with about 10 times that amount in January 2004.
Those seeds grew a Solar Tree that produced 197,000 watt-hours (that's 197 kilowatt-hours) of electricity in June 2002.
"This battery stores 220 watt-hours per kilogram and discharges up to 17 hours," says Licht.
After six hours of exposure to peak-hour sunlight, the pack can provide 120 watt-hours of energy.