1. What is the Battery Life Calculation?

The battery life calculation estimates how long a battery will last based on its energy capacity (in watt-hours) and the power consumption of the load (in watts). This is essential for designing and planning power systems.

2. How Does the Calculator Work?

The calculator uses the battery life formula:

Where:

• \( \text{Battery Wh} \) — Battery capacity in watt-hours
• \( \text{Load W} \) — Power consumption of the load in watts

Explanation: The formula simply divides the total energy available in the battery by the rate at which energy is being consumed.

3. Importance of Battery Life Calculation

Details: Accurate battery life estimation is crucial for designing electronic devices, planning backup power systems, and ensuring uninterrupted operation of critical equipment.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

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

Q2: Does this calculation account for battery efficiency?
A: No, this is a theoretical maximum. Real-world battery life may be shorter due to efficiency losses, temperature effects, and battery aging.

Q3: How accurate is this calculation?
A: It provides a good estimate for constant loads. For variable loads, you would need to calculate based on average power consumption.

Q4: Can I use this for any battery type?
A: Yes, the calculation works for any battery type (Li-ion, lead-acid, etc.) as long as you know the energy capacity in watt-hours.

Q5: What if my load power isn't constant?
A: For intermittent loads, calculate based on average power consumption or use more sophisticated battery modeling techniques.