1. What is the Battery Life Calculator?

The Battery Life Calculator estimates how long a battery will last based on its capacity (in amp-hours) and the current consumption of the device (in milliamps). It's useful for electronics design and power management.

2. How Does the Calculator Work?

The calculator uses the battery life equation:

Where:

• \( Ah \) — Battery capacity in amp-hours
• \( mA \) — Current consumption in milliamps
• 1000 — Conversion factor (1000mA = 1A)

Explanation: The equation converts the battery capacity to milliamp-hours (by multiplying by 1000) and divides by the current consumption to get hours of operation.

3. Importance of Battery Life Calculation

Details: Accurate battery life estimation is crucial for designing portable electronics, IoT devices, and any battery-powered system to ensure adequate runtime between charges or replacements.

4. Using the Calculator

Tips: Enter battery capacity in Ah (e.g., 2.4 for a 2400mAh battery) and current consumption in mA. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why multiply Ah by 1000?
A: We multiply by 1000 to convert amp-hours to milliamp-hours (mAh) to match the mA consumption unit.

Q2: Does this account for battery efficiency?
A: No, this is a theoretical maximum. Real-world results may be 10-30% less due to temperature, discharge rates, and battery age.

Q3: Can I use mAh instead of Ah?
A: Yes, but divide mAh by 1000 first (e.g., 2400mAh = 2.4Ah) or modify the equation by removing the 1000 multiplier.

Q4: What if my device has variable current?
A: Use the average current consumption or calculate runtime for different modes separately.

Q5: Does this work for all battery types?
A: The calculation applies to any battery type (Li-ion, NiMH, etc.), but actual performance may vary by chemistry.