1. What is Battery Life Calculation?

Battery life calculation estimates how long a battery will last based on its capacity and the power consumption of the device. It helps in planning power requirements and selecting appropriate batteries for various applications.

2. How Does the Calculator Work?

The calculator uses the battery life formula:

Where:

• \( \text{Capacity} \) — Battery capacity in watt-hours (Wh)
• \( \text{Power} \) — Power consumption in watts (W)

Explanation: The formula divides the total energy storage capacity by the rate of energy consumption to determine the operating time.

3. Importance of Battery Life Calculation

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

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between Wh and mAh?
A: Watt-hours (Wh) measure energy capacity, while milliamp-hours (mAh) measure charge capacity. Wh provides a more accurate measure of battery life as it accounts for voltage.

Q2: How accurate is this calculation?
A: This provides a theoretical maximum. Actual battery life may vary due to factors like temperature, discharge rate, battery age, and efficiency losses.

Q3: Can I use this for different battery types?
A: Yes, the formula works for all battery types (Li-ion, lead-acid, NiMH, etc.) as long as you use watt-hours for capacity.

Q4: What if my device has variable power consumption?
A: Use the average power consumption for estimation, or calculate for different usage scenarios separately.

Q5: How do I convert mAh to Wh?
A: Multiply mAh by voltage (V) and divide by 1000: Wh = (mAh × V) ÷ 1000