1. What is the Watt Hour Battery Life Calculator?

The Watt Hour Battery Life Calculator estimates how long a battery will last based on its watt-hour capacity and the power consumption of the connected load. It provides a simple way to determine battery runtime for various electronic devices and systems.

2. How Does the Calculator Work?

The calculator uses the battery life formula:

Where:

• \( \text{Wh} \) — Battery capacity in watt-hours
• \( \text{Load} \) — Power consumption in watts

Explanation: The formula calculates battery runtime by dividing the total energy capacity (watt-hours) by the power consumption rate (watts), resulting in the expected duration in hours.

3. Importance of Battery Life Calculation

Details: Accurate battery life estimation is crucial for planning power requirements, selecting appropriate batteries for applications, and ensuring uninterrupted operation of electronic devices and systems.

4. Using the Calculator

Tips: Enter battery capacity in watt-hours and load power consumption in watts. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a watt-hour (Wh)?
A: A watt-hour is a unit of energy equal to one watt of power expended for one hour of time. It represents the total energy capacity of a battery.

Q2: How accurate is this calculation?
A: This provides a theoretical maximum. Actual battery life may vary due to factors like temperature, battery age, discharge rate, and efficiency losses.

Q3: Can I use this for different battery types?
A: Yes, the formula works for any battery type (Li-ion, Lead-acid, NiMH, etc.) as long as you know the watt-hour capacity and load power consumption.

Q4: What if my load power varies?
A: For variable loads, use the average power consumption or calculate runtime for different power levels separately.

Q5: How do I convert amp-hours to watt-hours?
A: Multiply amp-hours by battery voltage: Wh = Ah × V. For example, a 12V 100Ah battery has 1200Wh capacity.