1. What is Amp Hour Draw?

Amp hour (Ah) is a unit of electric charge that represents the amount of current (in amps) flowing for one hour. It's commonly used to measure battery capacity and electrical consumption.

2. How Does the Calculator Work?

The calculator uses the simple equation:

Where:

• \( Ah \) — Amp hours
• \( A \) — Current in amperes
• \( Time \) — Duration in hours

Explanation: This calculation shows how much charge is consumed or delivered over a period of time at a constant current.

3. Importance of Amp Hour Calculation

Details: Amp hour calculations are essential for battery sizing, electrical system design, and estimating how long a battery will last under a given load.

4. Using the Calculator

Tips: Enter current in amps and time in hours. Both values must be positive numbers. The calculator will compute the total amp hour draw.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Ah and Wh?
A: Amp hours (Ah) measure charge, while watt hours (Wh) measure energy. To convert, multiply Ah by voltage (Wh = Ah × V).

Q2: How does this relate to battery capacity?
A: A 100Ah battery can theoretically deliver 1A for 100 hours, or 10A for 10 hours (though actual performance varies).

Q3: Can I use this for AC circuits?
A: This simple calculation works best for DC circuits. For AC, you'd need to consider power factor and RMS values.

Q4: Why is amp hour important for solar systems?
A: It helps size battery banks to store enough energy for periods without sunlight.

Q5: How accurate is this calculation?
A: It's accurate for constant current draws. For varying loads, you'd need to integrate current over time.