1. What is the Battery Time Calculator?

The Battery Time Calculator estimates how long a battery will last based on its energy capacity (watt-hours) and the power consumption (watts) of the connected load.

2. How Does the Calculator Work?

The calculator uses the simple equation:

Where:

• \( Battery\ Wh \) — Battery capacity in watt-hours
• \( Watts\ Load \) — Power consumption of the device in watts

Explanation: The equation divides the total energy stored in the battery by the rate at which energy is being used to determine runtime.

3. Importance of Battery Time Calculation

Details: Knowing battery runtime is crucial for designing power systems, planning outdoor activities with electronic devices, and ensuring uninterrupted operation of critical equipment.

4. Using the Calculator

Tips: Enter battery capacity in watt-hours and device power consumption in watts. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my battery's watt-hour rating?
A: Multiply the battery's voltage (V) by its amp-hour (Ah) rating. For example, a 12V 5Ah battery has 60Wh capacity.

Q2: Does this account for battery efficiency?
A: No, this is a theoretical maximum. Actual runtime may be 10-20% less due to conversion losses and other factors.

Q3: What if my device lists current (A) instead of watts?
A: Multiply current by voltage to get watts. For example, a 5V device drawing 2A consumes 10W.

Q4: Can I use this for solar power calculations?
A: Yes, but you'll need to account for solar input and charging efficiency separately.

Q5: How accurate is this calculation?
A: It provides a good estimate for constant loads. For variable loads, use the average power consumption.