1. What is Watt-Hours?

Watt-hours (Wh) is a unit of energy that represents the amount of electrical energy consumed or produced when a power of one watt is used for one hour. It's commonly used to measure battery capacity and energy consumption.

2. How Does the Calculator Work?

The calculator uses the watt-hours formula:

Where:

• \( Wh \) — Watt-hours (energy)
• \( P \) — Power in watts (W)
• \( h \) — Time in hours

Explanation: The formula simply multiplies power consumption by time to calculate total energy consumption.

3. Importance of Watt-Hours Calculation

Details: Calculating watt-hours helps in estimating energy costs, sizing solar power systems, comparing battery capacities, and understanding appliance energy consumption.

4. Using the Calculator

Tips: Enter power in watts (check appliance labels) and time in hours. For minutes, divide by 60 (e.g., 30 minutes = 0.5 hours).

5. Frequently Asked Questions (FAQ)

Q1: How is watt-hours different from watts?
A: Watts measure power (rate of energy use), while watt-hours measure energy (power × time).

Q2: How do I convert watt-hours to kilowatt-hours?
A: Divide watt-hours by 1000 (1 kWh = 1000 Wh).

Q3: What's a typical watt-hour consumption for household appliances?
A: A 60W bulb running for 5 hours uses 300Wh. A laptop might use 50-100Wh per charge.

Q4: How does this relate to battery capacity?
A: A 100Wh battery can power a 10W device for 10 hours, or a 50W device for 2 hours.

Q5: Can I use this for DC and AC power?
A: For AC devices, use the real power (in watts), not apparent power (in VA), for accurate calculations.