: 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
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
For scale, a single Google search uses 0.3 watt-hours of electricity, while a request for OpenAI’s ChatGPT takes 2.9 watt-hours, the agency found. Rocio Fabbro, Quartz, 15 Oct. 2024 For example, Dell is just now announcing a new version of its flagship $1,400 XPS 13 laptop with Lunar Lake that’s basically identical to the current model in every other way: same chassis, same dimensions, same screen, same 55 watt-hour battery pack. Sean Hollister, The Verge, 3 Sep. 2024 Plus, the Claw 8 can fit a far larger battery pack at 80 watt-hours vs. the 53-watt-hour pack of the original. Sean Hollister, The Verge, 7 June 2024 The company claims a 20 to 40 percent boost in energy density over current silicon-free designs, with prototypes reaching more than 800 watt-hours per liter at the cell level. IEEE Spectrum, 13 May 2024 Each battery brings 48 volts, 17.5 ampere-hours, and 840 watt-hours. IEEE Spectrum, 16 Feb. 2024 Ijaz: Our target density at a cell level is around 430 watt-hours per liter. IEEE Spectrum, 5 Jan. 2024 Despite this bigger, brighter, and higher-refresh screen, the OLED model touts 30–50 percent more battery life with a 50 watt-hour battery, versus the original 40 Whr. Kevin Purdy, Ars Technica, 9 Nov. 2023 For low-income households and homeowners in areas with high fire risk or multiple blackouts, the incentive rises to 85 cents per watt-hour, enough to cover most of the cost of a battery. Jon Healey, Los Angeles Times, 7 Aug. 2023

Word History

First Known Use

1888, in the meaning defined above

Time Traveler
The first known use of watt-hour was in 1888

Dictionary Entries Near watt-hour

Cite this Entry

“Watt-hour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watt-hour. Accessed 5 Nov. 2024.

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