1. What is Battery Running Time?

Battery running time is the estimated duration a battery can power a device before needing recharge. It depends on the battery's capacity, voltage, and the device's power consumption.

2. How Does the Calculator Work?

The calculator uses the battery running time formula:

Where:

• Battery Capacity — The energy storage capacity in amp-hours (Ah)
• Voltage — The battery's nominal voltage in volts (V)
• Power Consumption — The device's power draw in watts (W)

Explanation: The formula converts battery capacity to watt-hours (by multiplying Ah × V), then divides by power consumption to get runtime in hours.

3. Importance of Running Time Calculation

Details: Accurate runtime estimation helps in system design, backup power planning, and ensuring devices operate for required durations without power interruption.

4. Using the Calculator

Tips: Enter battery capacity in Ah, voltage in V, and power consumption in W. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: It provides theoretical maximum. Actual runtime may be less due to temperature, battery age, and efficiency losses.

Q2: Can I use this for lithium-ion batteries?
A: Yes, the formula works for all battery types as long as you know the correct capacity, voltage, and power draw.

Q3: What if my device lists current (A) instead of power (W)?
A: Multiply current (A) by voltage (V) to get power (W) before using the calculator.

Q4: Does battery discharge rate affect the result?
A: High discharge rates may reduce effective capacity, especially in lead-acid batteries. The calculator assumes nominal capacity.

Q5: How can I increase my battery runtime?
A: Use a higher capacity battery, lower power consumption, or multiple batteries in parallel (with proper configuration).