1. What is Battery Life Calculation?

The battery life calculation estimates how long a battery will last under a specific load current. It's a fundamental calculation in electrical engineering and electronics design.

2. How Does the Calculator Work?

The calculator uses the basic battery life equation:

Where:

• Capacity — Battery capacity in ampere-hours (Ah)
• Load — Current drawn by the device in amperes (A)
• Life — Estimated battery life in hours

Explanation: The equation simply divides the total charge capacity of the battery by the current being drawn to determine how many hours the battery will last.

3. Importance of Battery Life Calculation

Details: Accurate battery life estimation is crucial for designing electronic devices, planning backup power systems, and optimizing battery usage in various applications.

4. Using the Calculator

Tips: Enter battery capacity in Ah and load current in A. Both values must be positive numbers for valid calculation.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect real-world battery life?
A: Temperature, battery age, discharge rate, and battery chemistry can all affect actual battery life compared to theoretical calculations.

Q2: How accurate is this calculation?
A: This provides a theoretical maximum. Real-world results are typically 70-90% of calculated values due to various inefficiencies.

Q3: Can I use this for different battery types?
A: Yes, the basic calculation works for all battery types (Li-ion, lead-acid, NiMH, etc.), though each chemistry has specific characteristics.

Q4: What if my load varies over time?
A: For variable loads, calculate average current draw or calculate life for each load segment separately.

Q5: How do I convert mAh to Ah?
A: Divide mAh by 1000 (e.g., 2500 mAh = 2.5 Ah).