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Battery Capacity Formula:
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Battery capacity represents the total amount of energy a battery can store, typically measured in watt-hours (Wh). It indicates how long a battery can power a device before needing recharging.
The calculator uses the battery capacity formula:
Where:
Explanation: This formula calculates the total energy storage capacity by multiplying the battery's voltage by its ampere-hour rating.
Details: Calculating battery capacity is essential for determining how long electronic devices can operate, sizing batteries for specific applications, and comparing different battery options for energy storage needs.
Tips: Enter the battery voltage in volts and the amp hour rating. Both values must be positive numbers. The calculator will provide the capacity in watt-hours (Wh).
Q1: What's the difference between Wh and Ah?
A: Amp-hours (Ah) measure electrical charge, while watt-hours (Wh) measure energy. Wh accounts for both voltage and current, providing a more accurate measure of total energy capacity.
Q2: How does battery capacity affect device runtime?
A: Higher capacity batteries provide longer runtime for devices. Runtime can be estimated by dividing the battery capacity (Wh) by the device's power consumption (W).
Q3: Why is voltage important in capacity calculation?
A: Voltage determines the electrical potential, and when multiplied by amp-hours, it gives the total energy storage capacity in watt-hours.
Q4: Can I compare batteries with different voltages using this calculation?
A: Yes, converting to watt-hours allows direct comparison of energy storage capacity across batteries with different voltages.
Q5: How accurate is this calculation for real-world applications?
A: This provides theoretical maximum capacity. Actual usable capacity may be less due to discharge rates, temperature, and battery age affecting performance.