1. What is Battery Kilowatt-hour?

Kilowatt-hour (kWh) is a unit of energy that represents the amount of energy a battery can store. It's calculated by multiplying the battery's amp-hour (Ah) rating by its voltage (V) and dividing by 1000.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Ah \) — Amp-hours (battery capacity)
• \( V \) — Voltage (battery nominal voltage)
• 1000 — Conversion factor from watt-hours to kilowatt-hours

Explanation: This calculation converts the battery's capacity from amp-hours to the more commonly used kilowatt-hours for energy measurement.

3. Importance of Battery Capacity Calculation

Details: Knowing a battery's kWh capacity helps determine how long it can power devices, compare different batteries, and design energy systems.

4. Using the Calculator

Tips: Enter the battery's amp-hour rating and nominal voltage. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why convert Ah to kWh?
A: kWh is a more universal unit for energy that allows comparison between different voltage systems.

Q2: What's the difference between Ah and kWh?
A: Ah measures charge capacity, while kWh measures energy capacity (accounting for voltage).

Q3: Can I use this for any battery type?
A: Yes, the formula works for lithium-ion, lead-acid, and other battery types.

Q4: How accurate is this calculation?
A: It provides theoretical capacity. Actual usable capacity may be less due to discharge rates and efficiency losses.

Q5: What if my battery shows mAh instead of Ah?
A: Convert mAh to Ah by dividing by 1000 before using this calculator.