![]() How to Convert Kilowatt Hours to Watts (kWh to W) So, in this example, your battery has a capacity of 4.8 kilowatt hours. Here's how to calculate its kilowatt hours: 200 Ah × 24 V ÷ 1000 = 4.8 kWh Rather, they list them in amp hours, and you have to calculate their capacity in kilowatt hours yourself.įor example, let's say you have a 24V 200Ah LiFePO4 battery. Most batteries don't list their capacity in kilowatt hours. To convert amp hours to kilowatt hours, multiply amp hours times volts, then divide by 1,000.Ĭonversion formula: kilowatt hours = amp hours × volts ÷ 1000Ībbreviated: kWh = Ah × V ÷ 1000 Example: Calculating Kilowatt Hours of a Battery How to Convert Amp Hours to Kilowatt Hours (Ah to kWh) These figures can be used as a starting point in figuring out how big your battery bank needs to be. Home energy consumption is reported in kilowatt hours, so - when considering going off-grid - you can look at how many kilowatt hours you use on average each day and week. Knowing this, we can design a solar power or electrical system so that we don't exceed this limit.Īnother scenario in which converting kilowatt hours to amp hours is useful is when sizing a battery bank for off-grid solar power systems. So a 100Ah LiFePO4 battery will likely have a recommended max charge rate of 50 amps. For instance, most lithium iron phosphate batteries have recommended max charge rates in amps equal to 50% of their capacity in amp hours. 9.90 is 30% of 33.īatteries have recommended max charge and discharge rates based on their capacity in amp hours. ![]() So this 33Ah lead acid battery I own has recommended "initial current" of less than 9.90 amps. For example, the rates in amps for most lead acid batteries are 30% of amp hour capacity. Pretty easy! Why Convert Kilowatt Hours to Amp Hours? Battery charge and discharge rates are based on their capacity in amp hours. So, in this example, your generator's battery has a capacity of 50 amp hours. Knowing these two numbers, you can now calculate your battery capacity in amp hours. You look through the product manual and find that the battery voltage is 43.2 volts. Let's say you own a solar generator with a battery capacity of 2.16 kilowatt hours. To convert kilowatt hours to amp hours, divide kilowatt hours by volts, then multiply by 1,000.Ĭonversion formula: amp hours = kilowatt hours ÷ volts × 1000Ībbreviated: Ah = kWh ÷ V × 1000 Example: How to Calculate Amp Hours of a Battery How to Convert Kilowatt Hours to Amp Hours (kWh to Ah) Note: Don't see the values you're looking for in this chart? Use our kilowatt hours to amp hours conversion calculator at the top of this page to calculate them for your specific scenario. ![]() Here is a conversion chart converting common kilowatt hour values to amp hours at 12V and 24V. Or would you instead like to convert amp hours to kilowatt hours? Kilowatt Hours to Amp Hours Conversion Chart ![]()
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