1. What is the Runtime Equation?

The runtime equation calculates how long a battery system will last based on its total capacity and the current draw. It's essential for designing battery systems in series-parallel configurations.

2. How Does the Calculator Work?

The calculator uses the runtime equation:

Where:

• \( \text{Total Capacity} \) — Sum of all battery capacities in amp-hours (Ah)
• \( \text{Total Current} \) — Current draw in amps (A)

Explanation: The equation divides the total energy storage by the rate of energy consumption to determine duration.

3. Importance of Runtime Calculation

Details: Accurate runtime estimation is crucial for battery system design, ensuring sufficient power availability for the required duration.

4. Using the Calculator

Tips: Enter total capacity in Ah and total current in A. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How does series vs parallel affect capacity?
A: Series connections increase voltage while parallel connections increase capacity (Ah).

Q2: What's a typical battery capacity?
A: Common capacities range from 1Ah (small batteries) to 100Ah+ (deep cycle batteries).

Q3: How accurate is this calculation?
A: It provides theoretical maximum; actual runtime may be less due to inefficiencies.

Q4: Should I include a safety factor?
A: Yes, multiply calculated runtime by 0.7-0.8 for real-world estimates.

Q5: Does temperature affect runtime?
A: Yes, cold temperatures significantly reduce battery capacity and runtime.