1. What is Battery Inverter Run Time?

The battery inverter run time estimates how long a battery can power an inverter at a given load. It's crucial for planning backup power systems and understanding energy capacity.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

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

Explanation: This formula divides the total energy stored in the battery by the power draw of the inverter to determine how many hours the system can run.

3. Importance of Run Time Calculation

Details: Accurate run time estimation helps in designing reliable power backup systems, sizing batteries appropriately, and managing energy consumption expectations.

4. Using the Calculator

Tips: Enter battery capacity in watt-hours and inverter power in watts. Both values must be positive numbers. For best results, use manufacturer specifications for both battery and inverter.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: This provides a theoretical maximum. Real-world results may be 10-30% less due to inefficiencies, temperature, and battery age.

Q2: What if my battery is rated in Ah (amp-hours)?
A: Convert to Wh by multiplying Ah by battery voltage (e.g., 100Ah × 12V = 1200Wh).

Q3: Does inverter efficiency affect run time?
A: Yes, most inverters are 85-95% efficient. For more accuracy, divide the result by the efficiency factor (e.g., 0.9 for 90% efficient).

Q4: What's a typical run time for home backup?
A: For essential loads (500W) with a 2000Wh battery, expect about 4 hours. Larger systems (10kWh battery) can run 8-12 hours for modest loads.

Q5: How can I increase run time?
A: Either increase battery capacity, reduce power consumption, or use both strategies together.