1. What is Battery Life Calculation?

The battery life calculation estimates how long a battery will last based on its capacity and the current draw of the device it powers. This is essential for designing and using battery-powered systems.

2. How Does the Calculator Work?

The calculator uses the battery life equation:

Where:

• Battery Capacity — Measured in amp-hours (Ah)
• Current Draw — Measured in amps (A)

Explanation: The equation shows that battery life is directly proportional to battery capacity and inversely proportional to current draw.

3. Importance of Battery Life Estimation

Details: Accurate battery life estimation helps in selecting appropriate batteries for applications, planning battery replacement schedules, and optimizing power consumption.

4. Using the Calculator

Tips: Enter battery capacity in amp-hours (Ah) and current draw in amps (A). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What affects battery life besides current draw?
A: Temperature, battery age, discharge rate, and battery chemistry all affect actual battery life.

Q2: How accurate is this calculation?
A: It provides theoretical maximum. Real-world results are typically 70-90% of calculated value due to various factors.

Q3: Can I use this for different battery types?
A: Yes, the calculation works for any battery type (Li-ion, NiMH, lead-acid) as long as you know its capacity in Ah.

Q4: What if my device has variable current draw?
A: Use average current draw for estimation, or calculate for different modes and sum the durations.

Q5: How do I convert mAh to Ah?
A: Divide mAh by 1000 (e.g., 2000mAh = 2Ah).