1. What is Battery Runtime?

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

2. How Does the Calculator Work?

The calculator uses the battery runtime equation:

Where:

• \( \text{Battery Capacity} \) — The energy storage capacity in amp-hours (Ah)
• \( \text{Voltage} \) — The nominal voltage of the battery (V)
• \( \text{Power} \) — The power consumption of the device (W)

Explanation: The equation calculates how long a battery can sustain a given power load by converting the battery's energy capacity (Ah × V = Wh) and dividing by the power demand.

3. Importance of Runtime Calculation

Details: Accurate runtime estimation helps in selecting appropriate batteries for applications, planning backup power needs, and optimizing device power consumption.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What affects battery runtime accuracy?
A: Actual runtime may vary due to temperature, battery age, discharge rate, and efficiency losses.

Q2: How do I find my battery's capacity?
A: Capacity is usually printed on the battery label in mAh or Ah. For series/parallel configurations, calculate total capacity appropriately.

Q3: What's the difference between Ah and Wh?
A: Amp-hours (Ah) measure charge capacity, while watt-hours (Wh) measure energy capacity (Ah × V = Wh).

Q4: Can I use this for lithium-ion batteries?
A: Yes, but note lithium-ion batteries have different discharge characteristics than lead-acid batteries.

Q5: How can I increase runtime?
A: Use higher capacity batteries, reduce power consumption, or connect batteries in parallel (for same voltage systems).