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Energy Capacity Formula:
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Energy Capacity represents the total amount of electrical energy a battery can store and deliver. It is measured in watt-hours (Wh) and indicates how long a battery can power a device at a specific rate.
The calculator uses the Energy Capacity formula:
Where:
Explanation: This formula calculates the total energy storage capacity by multiplying the battery's voltage by its charge capacity, providing the energy available for use.
Details: Calculating energy capacity is essential for determining battery runtime, sizing power systems, comparing battery performance, and ensuring devices receive adequate power supply for their intended operation duration.
Tips: Enter voltage in volts (V) and capacity in ampere-hours (Ah). Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is the difference between Wh and Ah?
A: Ah (ampere-hours) measures charge capacity, while Wh (watt-hours) measures energy capacity. Wh accounts for both voltage and current, providing a more complete picture of energy storage.
Q2: Why is energy capacity important for battery selection?
A: Energy capacity determines how long a battery can power a device. Higher Wh ratings mean longer runtime, making it crucial for applications requiring extended operation.
Q3: Can I convert Wh to other energy units?
A: Yes, 1 Wh = 3600 joules. Energy capacity can also be converted to kilowatt-hours (kWh) by dividing by 1000.
Q4: How does temperature affect energy capacity?
A: Extreme temperatures can reduce effective energy capacity. Cold temperatures decrease chemical reaction rates, while high temperatures can accelerate degradation.
Q5: Is energy capacity the same as power output?
A: No, energy capacity (Wh) measures total stored energy, while power (W) measures the rate of energy delivery. A battery with high energy capacity may not necessarily deliver high power.