1. What is Battery Watt-Hours?

Watt-hours (Wh) is a unit of energy that measures the total amount of power a battery can deliver over time. It's calculated by multiplying the battery's capacity in amp-hours (Ah) by its voltage (V).

2. How Does the Calculator Work?

The calculator uses the watt-hours formula:

Where:

• \( Capacity \) — Battery capacity in amp-hours (Ah)
• \( Voltage \) — Battery voltage in volts (V)

Explanation: This simple multiplication gives you the total energy storage capacity of the battery in watt-hours.

3. Importance of Watt-Hours Calculation

Details: Knowing a battery's watt-hour rating helps compare different batteries, estimate runtime for devices, and understand energy capacity regardless of voltage.

4. Using the Calculator

Tips: Enter the battery's capacity in amp-hours (Ah) and its nominal voltage (V). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Ah and Wh?
A: Amp-hours (Ah) measure charge capacity, while watt-hours (Wh) measure energy capacity. Wh accounts for both voltage and current.

Q2: How do I convert Wh to kWh?
A: Divide the watt-hours by 1000. For example, 5000 Wh = 5 kWh.

Q3: Why is watt-hour rating important?
A: It allows direct comparison of batteries with different voltages and helps estimate how long a battery will power a device.

Q4: Can I use this for any battery type?
A: Yes, the formula works for lithium-ion, lead-acid, NiMH, and other battery chemistries.

Q5: How accurate is this calculation?
A: It provides theoretical maximum energy. Real-world performance depends on temperature, discharge rate, and battery age.