1. What is the Battery Life Calculation?

This calculator estimates how long a battery will last when powering a 1000 watt (1kW) load. It's useful for understanding battery capacity in practical terms for high-power applications.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( \text{Battery Wh} \) — Battery capacity in watt-hours
• \( 1000 \text{W} \) — Constant load power (1 kilowatt)

Explanation: The formula divides the total energy storage (watt-hours) by the power draw (watts) to determine runtime in hours.

3. Importance of Battery Life Calculation

Details: Understanding battery runtime at specific power levels helps in selecting appropriate batteries for high-power devices, emergency power systems, and electric vehicles.

4. Using the Calculator

Tips: Enter the battery's watt-hour rating (often found on the battery label). The result shows how many hours the battery would last powering a constant 1000W load.

5. Frequently Asked Questions (FAQ)

Q1: Why calculate for 1000 watts specifically?
A: 1000W (1kW) is a common reference point for high-power appliances and helps compare different batteries' capacities.

Q2: What's a typical battery Wh rating?
A: Small batteries might be 50Wh, laptop batteries 60-100Wh, car batteries 500-1000Wh, and home power walls 10,000Wh+.

Q3: Is this calculation accurate for real-world use?
A: It's theoretical maximum. Real-world factors like efficiency losses, temperature, and discharge rates will reduce actual runtime.

Q4: Can I calculate for other wattages?
A: Yes, divide your battery Wh by your actual load in watts to get hours of runtime.

Q5: What if my battery shows mAh instead of Wh?
A: Convert mAh to Wh by multiplying by voltage (Wh = mAh × V / 1000). For example, 3000mAh at 3.7V = 11.1Wh.