1. What is Battery Life Calculation?

The battery life calculation estimates how long a battery will last based on its energy capacity (watt-hours) and the power consumption of the device (watts). This helps in planning power requirements for electronic devices.

2. How Does the Calculator Work?

The calculator uses the battery life equation:

Where:

• \( Wh \) — Watt-hours (battery capacity)
• \( Power \) — Power consumption in watts

Explanation: The equation divides the total energy stored in the battery by the rate at which energy is being consumed to determine runtime.

3. Importance of Battery Life Estimation

Details: Accurate battery life estimation is crucial for designing power systems, selecting appropriate batteries, and ensuring devices can operate for required durations.

4. Using the Calculator

Tips: Enter watt-hours (battery capacity) and power consumption in watts. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Wh and Ah?
A: Watt-hours (Wh) measure energy capacity, while amp-hours (Ah) measure charge capacity. Wh = Ah × Voltage.

Q2: How accurate is this calculation?
A: It provides theoretical maximum. Actual runtime may be less due to inefficiencies, temperature, and discharge rates.

Q3: Can I use this for any battery type?
A: Yes, the calculation works for all battery types (Li-ion, lead-acid, etc.) as long as you know the watt-hour rating.

Q4: What if my device power varies?
A: Use average power consumption or calculate for different power levels separately.

Q5: How do I find my battery's Wh rating?
A: Check battery specifications or multiply Ah rating by nominal voltage (e.g., 3.7V for Li-ion).