1. What is Watts Per Hour?

Watts per hour is a measurement of power consumption or generation rate. For lithium batteries, it helps determine how much power can be delivered over a specific time period.

2. How Does the Calculator Work?

The calculator uses the simple power equation:

Where:

• \( Wh \) — Watt-hours (battery capacity)
• \( h \) — Time in hours
• \( W \) — Resulting power in watts

Explanation: This calculation shows how much power (in watts) your battery can deliver continuously for the specified number of hours.

3. Importance of Power Calculation

Details: Knowing the watts per hour helps in sizing batteries for specific applications, understanding power delivery capabilities, and estimating runtime for devices.

4. Using the Calculator

Tips: Enter the battery capacity in watt-hours and the desired runtime in hours. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Wh and W?
A: Watt-hours (Wh) measure energy capacity, while watts (W) measure power (energy per unit time).

Q2: Can I use this for non-lithium batteries?
A: Yes, the calculation works for any battery type, but lithium batteries typically have different discharge characteristics.

Q3: How accurate is this calculation?
A: It provides theoretical maximum power. Real-world performance may vary due to temperature, discharge rate, and battery age.

Q4: What if my device uses varying power?
A: This gives average power. For variable loads, consider peak power requirements and battery specifications.

Q5: How does this relate to battery life?
A: Higher power draw (watts) from the same capacity (Wh) battery will result in shorter runtime.