1. What is the Battery Capacity Formula?

The battery capacity formula calculates the ampere-hour (Ah) capacity of a battery by dividing the energy stored in watt-hours (Wh) by the battery voltage in volts (V). This provides a measure of how much charge a battery can deliver over time.

2. How Does the Calculator Work?

The calculator uses the battery capacity equation:

Where:

• \( \text{Energy} \) — Energy stored in watt-hours (Wh)
• \( \text{Voltage} \) — Battery voltage in volts (V)
• \( \text{Capacity} \) — Resulting capacity in ampere-hours (Ah)

Explanation: This formula converts energy storage (Wh) to charge capacity (Ah) by accounting for the battery's operating voltage.

3. Importance of Battery Capacity Calculation

Details: Accurate battery capacity calculation is essential for determining runtime, sizing battery systems for applications, and comparing different battery technologies.

4. Using the Calculator

Tips: Enter energy in watt-hours (Wh) and voltage in volts (V). Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Wh and Ah?
A: Watt-hours measure energy capacity, while ampere-hours measure charge capacity. Wh = Ah × V, so they are related through voltage.

Q2: Why is voltage important in capacity calculation?
A: Voltage determines how much energy each unit of charge carries. Higher voltage means more energy per ampere-hour.

Q3: Can I use this for all battery types?
A: Yes, this formula works for lithium-ion, lead-acid, NiMH, and other battery chemistries, as long as you know the nominal voltage.

Q4: How accurate is this calculation?
A: The calculation is mathematically precise, but actual battery performance may vary due to temperature, discharge rate, and age.

Q5: What's a typical battery capacity range?
A: Capacity varies widely - from small batteries of 1-10Ah to large systems of 100-1000Ah, depending on application and battery size.