1. What is the 100 Wh Battery Capacity Calculation?

This calculation determines the amp-hour (Ah) capacity of a 100 watt-hour (Wh) lithium battery based on its voltage. It helps compare batteries with different voltages on a common energy capacity basis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Ah \) — Amp-hour capacity
• \( 100 \text{ Wh} \) — Fixed energy capacity
• \( Battery\ Voltage \) — Nominal voltage of the battery (e.g., 3.7V for single-cell lithium)

Explanation: The formula converts watt-hours to amp-hours by dividing by the battery's voltage.

3. Importance of Amp-Hour Calculation

Details: Knowing the amp-hour capacity helps in comparing batteries, designing battery systems, and estimating runtime for devices.

4. Using the Calculator

Tips: Enter the battery's nominal voltage in volts. Common values are 3.7V (1-cell), 7.4V (2-cell), 11.1V (3-cell), etc. for lithium batteries.

5. Frequently Asked Questions (FAQ)

Q1: Why use 100 Wh as the reference?
A: 100 Wh is a common energy capacity used in aviation and transportation regulations for lithium batteries.

Q2: How does voltage affect capacity?
A: Higher voltage batteries will show lower Ah values for the same Wh capacity, but deliver the same total energy.

Q3: Is this only for lithium batteries?
A: The calculation works for any battery chemistry, but 100 Wh is most relevant for lithium batteries.

Q4: What's the difference between Wh and Ah?
A: Watt-hours measure energy capacity, while amp-hours measure charge capacity. Wh = Ah × V.

Q5: How accurate is this calculation?
A: It provides theoretical capacity. Actual capacity may vary based on discharge rate and temperature.