1. What is Ampere-hour (Ah)?

Ampere-hour (Ah) is a unit of electric charge commonly used to measure battery capacity. It represents the amount of charge a battery can deliver at a specific current over time (1 Ah = 1 amp for 1 hour).

2. How Does the Calculator Work?

The calculator uses the basic formula:

Where:

• \( Energy \) — Energy in watt-hours (Wh)
• \( Voltage \) — Battery voltage in volts (V)

Explanation: This formula converts energy capacity (Wh) to charge capacity (Ah) by accounting for the battery's operating voltage.

3. Importance of Ah Calculation

Details: Knowing a battery's Ah rating helps determine how long it can power a device, compare battery capacities, and design electrical systems.

4. Using the Calculator

Tips: Enter energy in watt-hours and voltage in volts. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Wh and Ah?
A: Wh measures energy capacity (power × time), while Ah measures charge capacity (current × time). Wh accounts for voltage differences between batteries.

Q2: How do I convert Ah to Wh?
A: Multiply Ah by voltage (V): Wh = Ah × V. This calculator does the inverse calculation.

Q3: Why is voltage important in Ah calculations?
A: Voltage determines how much energy each unit of charge carries. Higher voltage means more energy per Ah.

Q4: Can I compare batteries with different voltages using Ah?
A: Not directly. For accurate comparison, use Wh (energy capacity) which accounts for voltage differences.

Q5: What's a typical Ah rating for car batteries?
A: Car batteries typically range from 40Ah to 100Ah, with 50Ah being common for standard vehicles.