watt-hour
noun
: a unit of work or energy equivalent to the power of one watt operating for one hour
Examples of watt-hour in a Sentence
Recent Examples on the Web
The policy also restricts the size of lithium batteries eligible for transportation on Southwest flights, to 300 watt-hours or less.
—
Zach Wichter, USA Today, 15 Sep. 2025
Portable power for cold climates According to reports, the Pioneer Na has a 900-watt-hour (Wh) capacity, which is sufficient to power laptops, small appliances, or serve as a backup power source.
—Christopher McFadden, Interesting Engineering, 13 Sep. 2025
The Yoga's 75-watt-hour battery—generous for a 14-inch laptop—and energy-efficient chipset overcame the machine's power-hungry high-resolution OLED display.
—Mark Coppock, PC Magazine, 11 Sep. 2025
It's powered with a 720-watt-hour battery, which Rad Power estimates will get you to over 100 km (65 miles) of range at low assist settings.
—John Timmer, ArsTechnica, 12 Aug. 2025
The energy density, or the amount of energy a battery can store, is measured in watt-hours per kilogram (Wh/kg).
—Stephanie Pearson, Wired News, 8 Aug. 2025
Its energy density, exceeding 900 watt-hours per liter in internal tests, is estimated to be roughly 20 percent greater than that of current major smartphone-model batteries, the company says.
—IEEE Spectrum, 30 July 2025
The higher the watt-hour rating, the more energy the battery can store.
—Ken Colburn, AZCentral.com, 21 July 2025
The Power 2000 packs 2,048 watt-hours of juice in a carry-on-sized package.
—Joe Salas
july 04, New Atlas, 4 July 2025
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Zach Wichter, USA Today, 15 Sep. 2025
Portable power for cold climates According to reports, the Pioneer Na has a 900-watt-hour (Wh) capacity, which is sufficient to power laptops, small appliances, or serve as a backup power source.
—Christopher McFadden, Interesting Engineering, 13 Sep. 2025
The Yoga's 75-watt-hour battery—generous for a 14-inch laptop—and energy-efficient chipset overcame the machine's power-hungry high-resolution OLED display.
—Mark Coppock, PC Magazine, 11 Sep. 2025
It's powered with a 720-watt-hour battery, which Rad Power estimates will get you to over 100 km (65 miles) of range at low assist settings.
—John Timmer, ArsTechnica, 12 Aug. 2025
The energy density, or the amount of energy a battery can store, is measured in watt-hours per kilogram (Wh/kg).
—Stephanie Pearson, Wired News, 8 Aug. 2025
Its energy density, exceeding 900 watt-hours per liter in internal tests, is estimated to be roughly 20 percent greater than that of current major smartphone-model batteries, the company says.
—IEEE Spectrum, 30 July 2025
The higher the watt-hour rating, the more energy the battery can store.
—Ken Colburn, AZCentral.com, 21 July 2025
The Power 2000 packs 2,048 watt-hours of juice in a carry-on-sized package.
—Joe Salas
july 04, New Atlas, 4 July 2025
Cite this Entry
“Watt-hour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watt-hour. Accessed 18 Sep. 2025.
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