1. What is Battery Run Time?

Battery run time is the duration a battery can power a device before needing recharge. For a 1000W load, run time is directly calculated from the battery's watt-hour capacity.

2. How Does the Calculator Work?

The calculator uses the simple equation:

Where:

• \( \text{Battery Wh} \) — Battery capacity in watt-hours
• \( 1000 \text{W} \) — Constant load power

Explanation: The equation divides total battery energy by power consumption rate to determine duration.

3. Importance of Run Time Calculation

Details: Accurate run time estimation helps in system design, backup power planning, and comparing battery performance.

4. Using the Calculator

Tips: Enter battery capacity in watt-hours (Wh). Typical values range from 50Wh (laptop) to 5000Wh (solar power systems).

5. Frequently Asked Questions (FAQ)

Q1: Is this calculation accurate for all batteries?
A: This provides theoretical maximum. Actual runtime may be 10-20% less due to efficiency losses and discharge rates.

Q2: How do I find my battery's Wh rating?
A: Multiply battery voltage (V) by amp-hour (Ah) rating. For example: 12V 100Ah = 1200Wh.

Q3: Does temperature affect run time?
A: Yes, cold temperatures can reduce battery capacity by 20-50% depending on chemistry.

Q4: What if my load isn't exactly 1000W?
A: For different loads, use: Runtime = Battery Wh / Load Watts.

Q5: How does battery age affect results?
A: Older batteries typically have reduced capacity - multiply result by 0.7-0.9 for aged batteries.