How to Convert Amp Hours to Kilowatt Hours

How to Convert Amp Hours to Kilowatt Hours thumbnail
Power lines transport electrical energy.

Converting amp hours to kilowatt hours is often necessary if you want to compare the amount of power you can obtain from different energy generation devices, such as wind, hydro power and solar energy generators, and energy storage devices, such as batteries. It's a simple process to convert amp hours to kilowatt hours; a few arithmetic operations and you're done.

Things You'll Need

  • Pencil
  • Paper
  • Calculator
Show More

Instructions

    • 1

      Obtain the amp-hour rating of your energy generation or energy storage device. A boat battery, for example, may list a 0.8 amp-hour rating. This rating could be listed on the side of the product, or in the owner's manual. Instead of amp hours, the rating also could be listed in milliampere hours, often abbreviated mAHr.

      To convert milliampere hours to amp hours, divide the milliampere-hour rating by 1,000. For example, If a battery is rated at 3,500 milliampere hours, the amp-hour rating would be 3.5 amp hours, since 3,500 divided by 1,000 is 3.5.

    • 2

      Determine the operating voltage of your energy generation or energy storage device. Batteries are also given a voltage rating, often listed right on the side. Common voltage ratings for batteries include 3.3 volts, 5 volts and 12 volts. To determine exactly the voltage level of your battery, the best approach is to measure the voltage across the battery. The battery, if not fully charged, could have a lower voltage level than what is indicated on the battery.

    • 3

      Calculate the watt-hour rating. Multiply the amp-hour rating by the voltage rating. If you have a battery that has a 0.8 amp-hour rating, and the battery has a voltage rating of 12 volts, the watt-hour rating would be 9.6 watt hours, since 12 times 0.8 is 9.6.

      In other words, the battery could power a device that requires 9.6 watts for one hour. Likewise, if you had a battery with a 0.8 amp-hour rating, it could power a 0.8-amp device for one hour.

      Watts formula, a formula to compute power, states that the power in satts is equal to the current multiplied by the voltage. If a device requires 3 amps of curent and the battery that it uses is a 30-volt battery, the power the device uses is 90 watts, since 3 times 30 is 90.

      The formula for watt hours is an extension of watts formula. It states that watt hours is equal to amp-hours multiplied by the voltage across the device.

    • 4

      Calculate the kilowatt-hour rating. One kilowatt hour equals one thousand watt hours. Convert watt hours to kilowatt hours by dividing the watt-hour rating by 1,000. For a 9.6 watt-hour rating, the kilowatt-hour rating would be 0.0096 kilowatt hours, since 9.6 divided by 1,000 is 0.0096.

Tips & Warnings

  • Very powerful and dangerous batteries will often be rated in kiloamperes. A kiloampere is equivalent to 1,000 amperes (amps). To convert kiloampere hours to amp hours, multiply the kiloampere-hour rating by 1,000. For example, if battery is rated at 3 kiloamp, it will have an amp-hour rating of 3,000 amp hours, since 3 multiplied by a 1,000 is 3,000.

Related Searches

References

Resources

  • Photo Credit electricity image by brelsbil from Fotolia.com

You May Also Like

  • How to Convert Amps Into Kilowatt Hours

    Amps measure electrical current. If you multiply amps by volts--a measure of electrical potential--you get Watts, which measure the consumption of electricity...

  • Watt Hour Vs. Amp Hour

    Electricity carries energy that you can measure in several different ways. Power, the rate at which equipment uses energy, is expressed as...

  • How to Calculate Amp Hours by Watt Usage

    Ampere-hours, or amp-hours, are normally used to describe the energy capacity of batteries, although they can be used to calculate the required...

  • How to Convert Watts to Amps

    How to Calculate Amp Draw From Watts; How to Change Electrical Amps to Watts; Print this article; Things You'll Need. ... How...

  • How to Convert WH to MAH

    How to Convert Ah to mAh; Mah Jong Instructions; Print this article; Things You'll Need. ... How to Convert KWH to KVA....

  • Energizer Watt-Hour Battery Specs

    Energizer Watt-Hour Battery Specs. A watt-hour represents a unit of energy equal to one watt drawing power for one hour. ... How...

  • How to Convert Amp to Kwh

    How to Convert Amp Hours to Kilowatt Hours; Print this article; Things You'll Need. Ohm's Law (E= IR) P = IE; P(...

  • How to Convert Amperage to Amp-Hours

    Being able to convert amperage to amp hours is a useful skill. ... so a 1200mAh battery would be equivalent to a...

  • How to Calculate Battery Watt-Hours

    Citytrf: Appliance Cost Calculator; Ladyada: Batteries Overview; ... Amp Hour; How to Calculate Amp Hours by Watt Usage; Definition of Watt Hours;...

  • How to Calculate Amps to Kilowatts

    How to Convert Amps Into Kilowatt Hours. Amps measure electrical current. If you multiply amps by volts--a measure of electrical potential--you get...

  • How to Calculate Kilowatt Hours

    Since kilowatts are 1,000 watts, a kilowatt-hour is 1000 watt hours. 3. ... How to Convert Amps Into Kilowatt Hours. Amps measure...

  • How to Change KWH to Amps

    Electricity used in a home is typically measured in kilowatt hours (KWH). While they represent the total amount of energy used, you...

  • How to Convert Watts per Cell to Amps per Cell

    Watts and amps are both units of measurement used in electricity. Watt is the international unit for power. An amp, or ampere,...

  • Amp-to-KW Conversion

    An electric meter measures the amount of electricity you use in kilowatt-hours.

  • How to Convert a KWH to a Watt

    How to Convert a KWH to a Watt. A kilowatt-hour ... How to Convert Watts into Kilowatt Hours. ... How to Convert...

  • How to Convert Hours to Kilowatt Hours

    Comments You May Also Like. How to Convert Amp Hours to Kilowatt Hours. Converting amp hours to kilowatt hours is often necessary...

  • How to Convert Megawatts to Kilowatt Hours

    A kilowatt is the general term used to describe the amount of electrical energy consumed by a common household. In fact, your...

  • How to Calculate 12 Volt Amp-Hours

    Amp hours are the standard measure of the energy storage ... How to Convert Amp Hours to Kilowatt ... Amp-hour capacity concerns...

  • How to Find Watt-Hours

    Convert watt-hours to kilowatt-hours to calculate your energy costs. ... How to Convert Watt-Hours to Kilowatt-Hours; How to Calculate Amp Hours by...

Related Ads

Featured