1. What is Battery Life Calculation?

The battery life calculation estimates how long a battery will last when powering an inverter with a specific load. It's essential for designing power systems and estimating runtime for battery-powered applications.

2. How Does the Calculator Work?

The calculator uses the battery life equation:

Where:

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

Explanation: The equation divides the total energy capacity by the power consumption rate to determine runtime.

3. Importance of Battery Life Estimation

Details: Accurate battery life estimation helps in system design, ensuring adequate power supply for required durations and preventing unexpected power failures.

4. Using the Calculator

Tips: Enter battery capacity in watt-hours and inverter load in watts. Both values must be positive numbers for valid calculation.

5. Frequently Asked Questions (FAQ)

Q1: What affects actual battery life?
A: Temperature, battery age, discharge rate, and inverter efficiency can all impact actual runtime.

Q2: Should I fully discharge my battery?
A: Most batteries have optimal depth of discharge (usually 50-80%) for longest lifespan.

Q3: How do I find my battery's watt-hours?
A: Multiply battery voltage (V) by amp-hour (Ah) rating. For example, 12V 100Ah = 1200Wh.

Q4: Does inverter efficiency matter?
A: Yes, typical inverters are 85-95% efficient. For more accuracy, divide load by efficiency (e.g., 100W load / 0.9 efficiency = 111W actual draw).

Q5: Can I use this for solar systems?
A: This calculates discharge time only. For solar systems, you'd also need to consider charging time and solar input.