amp-hour

noun

ˈamp-ˈau̇r How to pronounce amp-hour (audio)
-ˈau̇-ər
: ampere-hour

Examples of amp-hour in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The 106 amp-hour cells feature a solid electrolyte infused with gel or liquid. — IEEE Spectrum, 12 Mar. 2025 The charge controller is connected to a 35-amp-hour lead-acid battery, a type of rechargeable battery commonly used for energy storage. — Munis Raza, Interesting Engineering, 24 Mar. 2026 Milwaukee claims the pole saw’s 8 Ah (amp-hour) batteries offer more power, allowing the machine to run for longer time periods, but the run times are not listed on the website. — Nor'adila Hepburn, Better Homes & Gardens, 25 Sep. 2023 In Michigan, Ford's BlueOval Battery Park Michigan in Marshall will produce smaller amp-hour cells for use in residential energy storage solutions. — Jamie L. Lareau, Freep.com, 29 Jan. 2026 The bus now holds 100 gallons of water, 1,800 amp-hours of lithium-ion batteries and 3,300 watts of solar power — enough to run air conditioning, appliances and electronics without ever plugging in. — Jordan Greene, PEOPLE, 29 Dec. 2025 Batteries Samsung has increased the energy density of the 21700 cells employed in Rivian’s Standard Pack and Max Pack batteries from 50 amp-hours per cell to 53 amp-hours. — Dan Carney, Popular Science, 12 June 2024 Those Continental mud-terrain tires measure 42 inches in diameter, the roof supports 1,400 watts of solar panels (that charge a 1,980 amp-hour lithium-ion battery pack), and 118 gallons of water capacity feed a shower, bathroom, and kitchen. — Michael Van Runkle, Robb Report, 9 Jan. 2025

Word History

First Known Use

1884, in the meaning defined above

Time Traveler
The first known use of amp-hour was in 1884

Rhymes for amp-hour

See All Rhymes for amp-hour

Browse Nearby Words

amphoterotoky
amp-hour
amp hr
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Cite this Entry

“Amp-hour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amp-hour. Accessed 7 Jul. 2026.

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