1. What is the eBatt Calculation?

The eBatt calculation converts watt-hours (Wh) to ampere-hours (Ah) using the battery voltage. This helps determine the battery capacity in terms of current over time, which is useful for sizing batteries and estimating runtime.

2. How Does the Calculator Work?

The calculator uses the eBatt formula:

Where:

• \( Wh \) — Energy capacity in watt-hours
• \( V \) — Battery voltage in volts
• \( Ah \) — Resulting capacity in ampere-hours

Explanation: The formula divides the energy capacity by the voltage to determine how many hours the battery can deliver one ampere of current.

3. Importance of Battery Capacity Calculation

Details: Knowing the ampere-hour capacity is essential for designing electrical systems, estimating battery life, and ensuring proper battery sizing for applications.

4. Using the Calculator

Tips: Enter the battery's watt-hour rating and nominal voltage. Both values must be positive numbers. The calculator will compute the equivalent ampere-hour capacity.

5. Frequently Asked Questions (FAQ)

Q1: Why convert Wh to Ah?
A: Many battery specifications and electrical systems use Ah ratings, making it easier to compare batteries and calculate runtime.

Q2: What's the difference between Wh and Ah?
A: Wh measures energy capacity (power × time), while Ah measures charge capacity (current × time). Wh accounts for voltage differences.

Q3: Should I use nominal or actual voltage?
A: Use the battery's nominal voltage (e.g., 12V for lead-acid, 3.7V for lithium-ion) unless you need precise calculations.

Q4: Can I use this for battery banks?
A: Yes, for batteries in parallel. For series connections, use the individual battery voltage and multiply Ah by the number of parallel strings.

Q5: How accurate is this calculation?
A: It provides theoretical capacity. Actual capacity may vary due to temperature, discharge rate, and battery age.