amp hour meaning

Or is it? (Units) a practical unit of quantity of electricity; the quantity that flows in one hour through a conductor carrying a current of 1 ampere. The ampere hour is frequently used in measurements of electrochemical systems such as electroplating and for battery capacity where the commonly known nominal voltage is dropped.

It is amps X hours. Since we never want to discharge the battery below 50%, the first thing we need to do is divide the amp hour rate in half. It is amps X hours. [4] Generally, the battery voltage varies during discharge; an average value or nominal value may be used to approximate the integration of power.[5]. All Years The 20 amp hour rate is for taking the battery down to 0%. An ampere is a unit of measure of the rate of electron flow or current in an electrical conductor.

To enable Verizon Media and our partners to process your personal data select 'I agree', or select 'Manage settings' for more information and to manage your choices. Five ampere-hours means a current flow of one ampere for five hours or a current flow of 2 1/ 2 ampere for 2 hours. For example, if you have a 2 Ah battery rated at 5 V, the power is 2Ah * 5V = 10Wh. 'Hepatomegaly' and 'hydronephrosis' are among the most frequently looked-up words in September. Theme can be used to create a professional Q&A community. You can get a certain insight into human nature from analysing the words that people look up in dictionaries. It is calculated using the formula Amps X Hours. So, 100 / 4.2 = 23.8, which means that you can run these three bulbs for just about 24 hours.

hope this helps Houghton Mifflin Harcourt. Copyright © 2010 by https://www.thefreedictionary.com/Amp+hour. To help express energy, computation over charge values in ampere hour requires precise data of voltage: in a battery system, for example, accurate calculation of the energy delivered requires integration of the power delivered (product of instantaneous voltage and instantaneous current) over the discharge interval. Modified entries © 2019 View usage for: faltering economy If you have something that pulls 20 amps, and you use it for 20 minutes, then the amp-hours used would be 20 (amps) X .333 (hours), or 6.67 AH. Our new online dictionaries for schools provide a safe and appropriate environment for children.

The Faraday constant is the charge on one mole of electrons, approximately equal to 26.8 ampere hours. Download our English Dictionary apps - available for both iOS and Android. But hang on a moment. Formula is (Ah)*(V) = (Wh). 1 ampere-hour is equivalent to 3600 coulombs. For the operation of a pacemaker, only a small amount of power is needed, and thus, one can make do with limited battery ampere-hour capacities. T. L. Brown, H. E. Lemay Jr, "Chemistry the Central Science", Prentice-Hall, 1977, "electric charge (Symbol Q). Last 100 years

Webster’s New World College Dictionary, 4th Edition.

And best of all it's ad free, so sign up now and start using at home or in the classroom. Take whatever you want your load to be and multiply it by the number of hours you want to run it. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Concorde has taken the ribbon every time, Low cost alternative to solar panel chargers, AMP579 Delivery for Myocardial Infarction Reduction. It is also used in electrochemical calculations. The amp-hour rating of a battery (also known as “AH”) is a measure of how many amps a battery can supply for a period of time. Amaze your friends with your new-found knowledge! This tungsten-style bulb draws 1.4 amps. This page was last edited on 24 September 2020, at 15:36. An amp-hour -- properly "ampere-hour" -- is a unit of measure describing electrical charge capacity. A milliampere second (mA⋅s) is a unit of measure used in X-ray imaging, diagnostic imaging, and radiation therapy. It is equivalent to a millicoulomb. The Amp Hour also has sub-units like the MilliAmpere-Hour (mA-h or mAh), and the MilliAmpere-Second (mA-s) which is the unit of measure used in X-ray diagnostic imaging and radiation therapy. Last 10 years You can change your choices at any time by visiting Your Privacy Controls.

It turns out that your battery has more Amp Hour capacity when you use it at lower Wattage and Amperage levels. It is calculated using the formula Amps X Hours. An ampere hour (abbreviated Ah, or sometimes amp hour) is the amount of energy charge in a battery that will allow one ampere of current to flow for one hour. We have almost 200 lists of words from topics as varied as types of butterflies, jackets, currencies, vegetables and knots! Find out more about how we use your information in our Privacy Policy and Cookie Policy. One common Amp Hour rating is based on using 20 hour time period where at the beginning of the test the battery is 100% charged having. What does the battery term AH or "Amp - Hour" rating mean? Unfortunately we don’t live in the ideal world, so the values above are not spot on. In practice, none of these are exactly true, it depends on what condition the battery is in. An ampere-hour is a measure of charge or current flow over time. Create an account and sign in to access this FREE content, COBUILD Key Words for Electrical Engineering, The programme has wide significance for other advanced, The board is expected to meet today to consider a formal, With more seats made available, it should be a, The only way to keep the boat afloat was to. We and our partners will store and/or access information on your device through the use of cookies and similar technologies, to display personalised ads and content, for ad and content measurement, audience insights and product development. poisonous atmosphere? The electric charge transferred past a specified circuit point by a current of one ampere in one hour. The watt-hour is not a standard unit in any formal system, but it is commonly used in electrical applications. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. An ampere hour or amp hour (symbol: A⋅h or A h; often also unofficially denoted as Ah) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing for one hour, or 3,600 coulombs. An average smartphone battery usually has between 2,500 and 4,000 milliampere hours of electric capacity. or This portable power supply offers a host of features, including four 20 amp explosion-proof receptacles, a 70, The NB400 offers seamless power with a rechargeable 40, 75, or 100, The system can become a stand alone power supply with the addition of an optional 12 Volt--0.8, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, Tubular conventional maintenance batteries support opportunity charging, Power supply designed for hazardous locations, Aircraft batteries: Concorde still excels: We've put Concorde and Gill batteries, both sealed and flooded, head-to-head for a decade now. or An amp-hour is one amp for one hour, or 10 amps for 1/10 of an hour and so forth. watt-hour (Wh): The watt-hour (symbolized Wh) is a unit of energy equivalent to one watt (1 W) of power expended for one hour (1 h) of time . Convert Watt hour to Amp hour (Wh to Ah) This quantity is proportional to the total X-ray energy produced by a given X-ray tube operated at a particular voltage.

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