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Farad to Amp Hour Formula:
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The Farad to Amp Hour formula converts capacitance in farads to energy storage capacity in amp hours, accounting for the operating voltage. This conversion is useful for comparing supercapacitors with batteries in energy storage applications.
The calculator uses the formula:
Where:
Explanation: The formula calculates the theoretical amp hour capacity by converting the stored energy in the capacitor (½CV²) to an equivalent battery capacity, though actual performance may vary due to different discharge characteristics.
Details: Converting capacitor specifications to amp hours allows for direct comparison with battery technologies, helping engineers select appropriate energy storage solutions for specific applications and duration requirements.
Tips: Enter capacitance in farads and operating voltage in volts. Both values must be positive numbers. The result represents the theoretical equivalent amp hour capacity.
Q1: Why divide by 3600 in the formula?
A: The division by 3600 converts from coulombs (C×V = joules/volt) to amp hours, since 1 amp hour = 3600 coulombs.
Q2: Is this conversion accurate for real-world applications?
A: This provides a theoretical maximum. Actual performance differs due to capacitor discharge characteristics, efficiency losses, and voltage drop during discharge.
Q3: Can I use this for all types of capacitors?
A: The formula works for any capacitor, but is most relevant for supercapacitors used in energy storage applications rather than small signal capacitors.
Q4: How does temperature affect the calculation?
A: Temperature affects capacitor capacitance and internal resistance, which may reduce actual amp hour capacity compared to the theoretical calculation.
Q5: Why compare capacitors to batteries in amp hours?
A: Amp hours are a standard unit for battery capacity, making this conversion useful for evaluating whether capacitors can replace batteries in specific applications.