1. What is mAh Battery Life?

mAh (milliamp-hours) is a unit that measures electric charge capacity, representing how much current a battery can deliver over time. Battery life calculation helps estimate how long a battery will last under specific current draw conditions.

2. How Does the Calculator Work?

The calculator uses the battery life equation:

Where:

• \( mAh \) — Battery capacity in milliamp-hours
• \( mA \) — Current draw in milliamps

Explanation: The equation calculates how many hours a battery will last by dividing its total capacity by the current being drawn from it.

3. Importance of Battery Life Calculation

Details: Accurate battery life estimation is crucial for designing electronic devices, planning power requirements, and optimizing battery usage in portable electronics.

4. Using the Calculator

Tips: Enter battery capacity in mAh and current draw in mA. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why use mAh instead of Ah?
A: mAh (milliamp-hours) is more commonly used for small batteries in portable electronics, while Ah (amp-hours) is used for larger batteries.

Q2: What affects actual battery life?
A: Temperature, battery age, discharge rate, and voltage requirements can all affect real-world battery performance.

Q3: How accurate is this calculation?
A: It provides theoretical maximum. Real-world life is typically 70-90% of calculated value due to various factors.

Q4: Can I use this for different battery types?
A: Yes, the calculation works for any battery type (Li-ion, NiMH, etc.) as long as you know its mAh rating.

Q5: How do I extend battery life?
A: Reduce current draw, use power-saving modes, optimize software, and maintain proper battery temperature.