Battery Capacity Calculator
Calculate the capacity of a battery based on current drawn and time.
Enter Parameters
Understanding Battery Capacity
Battery capacity is a measure of the charge stored by the battery, and is a figure of merit for how long a battery can be expected to last. It is typically measured in milliampere-hours (mAh). This calculator determines the required capacity by multiplying the current drawn by the device by the desired runtime.
Formula: Capacity (mAh) = Current (mA) × Time (hours)
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