Battery capacity, on the other hand, is usually measured in Ah.įor us to estimate the energy equal to the capacity of the batteries, we’ll have to convert to amp-hours. Typically, electrical energy is measured in kWh. We may have to convert kilowatt-hours to amp-hours when estimating the capacity of a battery bank that will meet our energy requirements. Why Convert Kilowatt Hours to Amp Hours (kWh to Ah)? In other words, it will store more electrical charge and can power devices longer. Of course, the 125 Ah generator has a higher capacity than the 100 Ah generator. We’ll start by converting kilowatt-hours to ampere-hour: Capacity in Ah = (1000 x 1.5)/12 = 125 Ah.Īfter that, we’ll compare the capacities. Say we have a solar generator rated 1.5 kWh with a battery voltage of 12 V, and we want to compare it to a 100 Ah solar generator. Example: How to Calculate Amp Hours of a Solar Generator The conversion formula we stated above implies that amp-hours-kilowatt-hours conversions need a value for voltage. This is pretty much what the conversion calculator does for us. Going by the formula, to convert kilowatt-hours (kWh) to amps-hours (Ah), divide kilowatt-hours by the voltage then multiply by 1000. Then finally, we’ll multiply both sides by 1000 to get our conversion formula: Next, we divide both sides of kWh = VAh/1000 by V to get Ah/1000 = kWh/V. Then by substituting VA/1000 for kW in kWh, we’ll arrive at: kWh = VAh/1000. To convert watts (W) to kilowatts (kW), we’ll divide W (VA) by 1000: kW = VA/1000. W = V x A = VA, where A is electric current and V is voltage. It can be derived from voltage and current as follows: Watts (W) is the unit of power in the international system of units (SI unit). Of all three, the unit of power – W (watts) – is the only one that is derived. Kilowatt-hours (kWh) is made up of three units. To fully clarify how to convert kilowatt-hours to amp-hours, we’ll start by diving kWh up into its constituent units. How to Convert Kilowatt-Hours to Ampere-Hours (kWh to Ah Conversion) Conversion Formula It is usually used as measure of battery capacity (how much charge a battery can store). What Is an Amp Hour?Īmp-Hours (Ah) is a unit of electrical charge that represents the amount of charge that flows out of a power source for one hour. While kWh is not the SI unit of energy, it is typically used in measurements involving electricity consumption. Kilowatt-Hours (kWh) represents the electrical energy consumed by a device that uses a certain amount of power for one hour. Conversion formula: Ah = kWh × 1,000 / V What Is Kilowatt-Hours?
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