1. What is Battery Capacity?

Battery capacity is a measure of the charge stored in a battery, typically measured in amp-hours (Ah) or kilowatt-hours (kWh). It represents the amount of energy a battery can deliver at the rated voltage.

2. How Does the Calculator Work?

The calculator uses the battery capacity formula:

Where:

• Battery Capacity (Ah) — The battery's capacity in amp-hours
• Battery Voltage (V) — The nominal voltage of the battery
• 1000 — Conversion factor from watt-hours to kilowatt-hours

Explanation: The formula converts the battery's amp-hour rating to kilowatt-hours by multiplying by the voltage and dividing by 1000.

3. Importance of Battery Capacity Calculation

Details: Calculating battery capacity in kWh is essential for energy storage system design, electric vehicle range estimation, and determining how long a battery can power electrical devices.

4. Using the Calculator

Tips: Enter the battery's capacity in amp-hours (Ah) and its nominal voltage in volts (V). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why convert Ah to kWh?
A: kWh is a more practical unit for energy storage as it directly relates to electrical energy consumption (what you see on your electricity bill).

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

Q3: How accurate is this calculation?
A: It provides theoretical maximum capacity. Actual usable capacity may be less due to discharge rates, temperature, and battery age.

Q4: Can I use this for any battery type?
A: Yes, this works for lead-acid, lithium-ion, NiMH, and other battery types as long as you know the nominal voltage.

Q5: How does this relate to battery runtime?
A: Runtime depends on load power. Divide kWh by load kW to estimate hours of operation.