milliamp-hours to watt-hours calculation The energy E(Wh) in watt-hours is equal to the electric charge Q(mAh) in milliamp-hours times the voltage V(V) in volts (V) divided by 1000: E(Wh) = Q(mAh) × V(V) / 1000 If you want to do the conversion by hand, here’s the formula behind our Wh calculator: Wh = mAh × V / 1000 mAh stands for milliamp-hour and it’s the unit of electric charge and commonly used to express the capacity of the small batteries. In this sense, the Wh represents the amount of power that a battery can supply before dying. . 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For instance, the power of a 300mAh battery, rated at 5V, would be 1.5 Wh, as 300mAh * 5V /1000 = 1.5 Wh. The energy E is equal to 300 milliamp-hours times 5 volts divided by 1000: © document.write(new Date().getFullYear()) (adsbygoogle = window.adsbygoogle || []).push({}); Copyright © 2010-2018 Difference Between. Milli Ampere hour is one thousandth of an Ampere hour. Hence the product of time and current gives the charge passed within the time duration Δt. How to convert Wh to mAh Ampere hour is a unit of electric charge. Current ( I ) = (charge flow)/time = ΔQ/Δt. The definition of power is the key concept in defining this unit. In the modern world hand held or portable devices are very popular and common. DigiKey's battery life calculator uses battery capacity (mAh) and device consumption (mA) to caclulate estimated hours of battery life. The formula is (mAh)/ (Amps*1000) = (hours). ca5.co | All rights reserved. There was an error while trying to send your request. As an Amazon Associate we earn from qualifying purchases. Just feed the mAh value to be converted at the first box and the voltage in the second box. If you purchase products via the links on our site, we might earn affiliate commissions. A powerbank normally has a single cell voltage, so a 26500 mAh bank can supply 26.5 x 3.7 = 98 Wh. These devices are powered by batteries and draw little current and designed to consume minimal energy. Power equals voltage time current. Terms of Use and Privacy Policy: Legal. The electric charge Q (mAh) in milliamp-hours (mAh) is equal to 1000 times the energy E (Wh) in watt-hours (Wh) divided by the voltage V (V) in volts (V): Q (mAh) = 1000 × E (Wh) / V (V) So milliamp-hours is … About | Enter the electric charge in milliamp-hours (mAh), voltage in volts (V), then press the Calculate button to get the result in watt-hours (Wh). Formula is (mAh)* (V)/1000 = (Wh). Compare the Difference Between Similar Terms. mAh specify the total amount of charge passing through a point in a certain period of time. In the modern world hand held or portable devices are very popular and common. For example, If you have 150 mAh and 45 V the calculation will be; (Wh) = 150 x 45 / 1000 = 6.75 (Wh) CTRL + SPACE for auto-complete. Power Bank Expert is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. 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It can be rearranged as ΔQ=I×Δt. @media (max-width: 1171px) { .sidead300 { margin-left: -20px; } } Often watt hour is small to denote the energy usage/generation of an electric system; therefore, higher order units are used in those systems. These devices are powered by batteries and draw little current and designed to consume minimal energy. mAh is used to indicate the battery rating as well as the charge stored in […] Electrical4u will use the information you provide on this form to be in touch with you and to provide updates and marketing. When parameters of these batteries are considered, the values are small and hence smaller units are required to express them. Q (mAh) = 1000 x E (Wh) / V (V), which means that the electric charge in milliamps is calculated by multiplying the energy in watt hours by 1000 and dividing the result by voltage in volts. The conversion of mAh to watt-hours can be done through the following formula: (mAh)*(V)/1000 = Wh. To calculate how many hours a certain mAh lasts, you need to know either the current, or the voltage and watts: First, fill in this box with your mAh: mAh. Calculate duration that milliamp hours lasts. Watt-hours is the multiplication of supplied current and voltage for the time in hours. What is the difference between mAh and Wh? Watt hour is the amount of energy consumed or generated by an electric device if it is operated uninterruptedly with a power of 1 watt for a period of an hour. Below table is a pre-calculated mAh to Wh conversion for 12 Volts. How to convert milliamp-hours (mAh) to watt-hours (Wh). Also, the final Watt-Hour can be varied by changing the input volts. 57 Wh/11.1 gives a current capacity of 5.13 Ah, or 5130 mAh. [1kWh = 1000Wh = 3.6 MJ (mega joules) and 1 MWh = 1000000 Wh = 3.6 GJ (Giga joules)]. Devices like batteries gives relatively low power and hence watt hour (Wh) is used as a unit in batteries. mAh ia a unit of electric power whereas V is unit of potential difference. It is equal to 3600 joules. and the voltage is 5 volts. When parameters of these batteries are considered, the values are small and hence smaller units are required to express them. Convert mAh (milliamphours) to time in hours. watt hour (Wh) Related category: Power In physics, energy is a scalar physical quantity that describes the amount of work that can be performed by a force, an attribute of objects and systems that is subject to a conservation law. If instead of the current you have voltage and watts, then the formula is (mAh*Volts)/ (Watts*1000) = (hours).

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