1. What is the 100Ah Battery Run Time Calculation?

The 100Ah battery run time calculation estimates how long a 100 amp-hour battery will last powering a specific load at a given voltage. This is essential for designing power systems and estimating battery requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• 100 — Battery capacity in amp-hours (Ah)
• \( V \) — Battery voltage (volts)
• \( \text{Load W} \) — Power consumption of the load (watts)

Explanation: The formula converts the battery's amp-hour capacity to watt-hours (by multiplying by voltage) then divides by the load's power consumption to determine runtime.

3. Importance of Battery Run Time Calculation

Details: Accurate runtime estimation helps in proper system design, ensuring batteries can support loads for required durations and preventing unexpected power failures.

4. Using the Calculator

Tips: Enter battery voltage in volts and load power in watts. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Is this calculation accurate for all battery types?
A: This provides a theoretical maximum. Actual runtime may be less due to efficiency losses, temperature effects, and battery age.

Q2: Should I fully discharge my battery?
A: No, most batteries shouldn't be discharged below 50% capacity for optimal lifespan. Factor this into your calculations.

Q3: How does battery voltage affect runtime?
A: Higher voltage batteries store more energy (watt-hours) for the same amp-hour rating, thus providing longer runtime for the same load.

Q4: What if I have multiple batteries?
A: For batteries in parallel, sum their amp-hour ratings. For series, sum voltages but keep amp-hours the same.

Q5: Does this account for inverter efficiency?
A: No, if using an inverter, divide the result by the inverter's efficiency (typically 0.85-0.95) for more accurate estimates.