There are some types of batteries, such as solar generators, that by convention tend to describe their capacity in watt hours.įor instance, let's say you own the Jackery Explorer 1500, a solar generator with a 1534Wh capacity. Amp hours (Ah) = Watt hours (Wh) ÷ Volts (V)Ĭalculator: Watt Hours to Amp Hours Calculator Example To convert watt hours to amp hours, simply divide watt hours by volts. How to Convert Watt Hours to Amp Hours (Wh to Ah) The extra pressure more than makes up for the smaller flow rate, meaning that Battery A ends up delivering more energy. On the other hand, Battery A can output its electrons at a lower flow rate, but they flow at three times the pressure. Voltage is like the water pressure, while amperage is like the flow rate.Īlthough Battery B can output its electrons at a higher 'flow rate', they flow at a lower 'pressure'. That's right, Battery A actually has a greater capacity in watt hours than Battery B.Įlectricity can be thought of like water flowing through a pipe. However, when we calculate each battery's capacity in watt hours, we find that Battery A actually has a greater capacity than Battery B. The total energy a battery can provide depends on both its amp hours and voltage, so only comparing amp hours can lead you to some erroneous conclusions.įor example, consider these two batteries of mine, which I'll call Battery A and Battery B: In this example, your battery has a capacity of 600Wh.Įasy! Why Convert Amp Hours to Watt Hours?Ĭonverting amp hours to watt hours makes it easier to compare how much energy different batteries can deliver. To calculate your battery's watt hours, you'd multiply 50Ah × 12V: 50 amp hours (Ah) × 12 volts (V) = 600 watt hours (Wh) Let's say you have a 12V battery with a 50Ah capacity. To convert amp hours to watt hours, simply multiply amp hours by volts: Watt hours (Wh) = Amp hours (Ah) × Volts (V) Example How to Convert Amp Hours to Watt Hours (Ah to Wh) Here's a conversion chart converting common amp hour values to watt hours at 12 and 24 volts.
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