1. What is Battery Life Calculation?

The battery life calculation estimates how long a battery will last under a specific load. It's essential for designing and using electronic devices that rely on battery power.

2. How Does the Calculator Work?

The calculator uses the battery life equation:

Where:

• \( \text{Battery Energy} \) — Total energy stored in the battery (watt-hours)
• \( \text{Load Power} \) — Power consumption of the device (watts)

Explanation: The equation divides the total available energy by the rate of energy consumption to determine duration.

3. Importance of Battery Life Estimation

Details: Accurate battery life estimation helps in device design, power management, and user experience planning. It's crucial for portable electronics, electric vehicles, and renewable energy systems.

4. Using the Calculator

Tips: Enter battery energy in watt-hours and load power in watts. Both values must be positive numbers for valid calculation.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Wh and mAh?
A: Watt-hours (Wh) measure energy, while milliamp-hours (mAh) measure charge. To convert mAh to Wh, multiply by voltage and divide by 1000.

Q2: Does battery life decrease over time?
A: Yes, batteries lose capacity with charge cycles and age, typically retaining 70-80% of original capacity after 500 full cycles.

Q3: How accurate is this calculation?
A: It provides theoretical maximum. Real-world factors like temperature, discharge rate, and battery age affect actual performance.

Q4: What if my device has variable power consumption?
A: Use average power consumption or calculate for different modes separately.

Q5: Can I use this for different battery types?
A: Yes, the formula works for all battery types (Li-ion, NiMH, lead-acid), but actual performance may vary by chemistry.