1. What is Battery Run Time?

Battery run time is the estimated duration a battery can power a device before needing recharge. It's calculated by dividing the battery's energy capacity by the power consumption of the device.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• Battery Energy — The total energy storage capacity in watt-hours (Wh)
• Load Power — The power consumption of the device in watts (W)

Explanation: This formula gives the theoretical maximum run time. Actual run time may vary due to factors like battery age, temperature, and efficiency losses.

3. Importance of Run Time Calculation

Details: Calculating battery run time helps in designing power systems, selecting appropriate batteries for devices, and estimating how long equipment can operate on battery power.

4. Using the Calculator

Tips: Enter the battery's energy capacity in watt-hours and the device's power consumption in watts. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my battery's watt-hour rating?
A: For batteries with mAh ratings: (mAh × Voltage) / 1000 = Wh. Or check the battery specifications.

Q2: Why is actual run time often less than calculated?
A: Factors like battery age, temperature, discharge rate, and conversion efficiency can reduce actual run time.

Q3: Does this work for all battery types?
A: Yes, the formula works for any battery type (Li-ion, lead-acid, etc.) as long as you know the energy capacity in Wh.

Q4: How accurate is this calculation?
A: It provides a theoretical maximum. For critical applications, real-world testing is recommended.

Q5: Can I use this for solar power systems?
A: Yes, but you need to account for solar charging and daily energy balance in such systems.