1. What is Battery Run Time?

Battery run time is the duration a battery can power a device before needing recharge or replacement. It depends on the battery's capacity, voltage, and the power consumption of the connected load.

2. How Does the Calculator Work?

The calculator uses the battery run time formula:

Where:

• \( \text{Battery Capacity} \) — The energy storage capacity in amp-hours (Ah)
• \( \text{Voltage} \) — The nominal voltage of the battery in volts (V)
• \( \text{Load} \) — The power consumption of the device in watts (W)

Explanation: The formula converts the battery's energy capacity (in watt-hours) and divides it by the load's power consumption to estimate runtime.

3. Importance of Run Time Calculation

Details: Accurate run time estimation helps in designing power systems, selecting appropriate batteries for applications, and ensuring uninterrupted operation of critical devices.

4. Using the Calculator

Tips: Enter battery capacity in Ah, voltage in V, and load in W. All values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is my actual run time different from calculation?
A: Real-world factors like temperature, battery age, discharge rate, and efficiency losses can affect actual run time.

Q2: What's the difference between Ah and Wh?
A: Amp-hours (Ah) measure charge capacity, while watt-hours (Wh) measure energy capacity (Ah × V = Wh).

Q3: How does battery type affect run time?
A: Different chemistries (Li-ion, Lead-acid, etc.) have varying discharge characteristics and efficiencies.

Q4: Should I derate the calculated run time?
A: For critical applications, consider using only 80% of calculated time to account for inefficiencies.

Q5: How can I increase battery run time?
A: Use higher capacity batteries, reduce load power consumption, or connect batteries in parallel.