1. What is Watt Hour Battery Life?

The watt-hour battery life calculation estimates how long a battery will last under a specific load. It's crucial for designing and using battery-powered systems, from small electronics to electric vehicles.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Capacity \) — Total energy storage capacity in watt-hours (Wh)
• \( Load Power \) — Power consumption of the device in watts (W)

Explanation: This formula divides the total energy available by the rate at which energy is being consumed to determine how many hours the battery will last.

3. Importance of Battery Life Calculation

Details: Accurate battery life estimation helps in system design, power management, and user experience planning. It's essential for applications where continuous power is critical.

4. Using the Calculator

Tips: Enter battery capacity in watt-hours and load power in watts. Both values must be positive numbers. For best accuracy, use manufacturer specifications for both values.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Wh and mAh?
A: Watt-hours (Wh) measure energy capacity, while milliamp-hours (mAh) measure charge capacity. To convert mAh to Wh, you need to know the battery voltage.

Q2: Does this account for battery efficiency?
A: No, this is a theoretical maximum. Real-world battery life may be 10-25% shorter due to efficiency losses and other factors.

Q3: What affects actual battery life?
A: Temperature, discharge rate, battery age, and charging cycles can all impact real-world battery performance.

Q4: How do I find my battery's watt-hour rating?
A: Check the battery label or specifications. For mAh ratings, multiply by voltage (V) and divide by 1000 to get Wh.

Q5: Can I use this for any battery type?
A: Yes, the formula works for lithium-ion, lead-acid, NiMH, and other battery types as long as you have the correct Wh rating.