1. What is Watts to Amps Conversion?

The Watts to Amps conversion calculates the electric current (in amperes) from power (in watts) for a given voltage. For 12V batteries (common in automotive and solar applications), this helps determine current draw.

2. How Does the Calculator Work?

The calculator uses the DC power formula:

Where:

• \( I \) — Current in amperes (A)
• \( P \) — Power in watts (W)
• \( V \) — Voltage in volts (V) - fixed at 12V for this calculator

Explanation: The formula shows the direct relationship between power and current at a constant voltage.

3. Importance of Current Calculation

Details: Knowing the current draw is essential for selecting proper wire gauges, fuses, and battery capacity in 12V systems.

4. Using the Calculator

Tips: Enter power consumption in watts. The calculator assumes a 12V DC system. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is voltage fixed at 12V?
A: This calculator is specifically designed for 12V battery systems common in cars, RVs, and solar applications.

Q2: Can I use this for AC circuits?
A: No, this is for DC circuits only. AC calculations require power factor consideration.

Q3: How accurate is this calculation?
A: It's mathematically precise for pure DC systems, but real-world factors like resistance may cause slight variations.

Q4: What's a typical current draw for car accessories?
A: Car stereo: 5-10A, Headlights: 8-10A per bulb, Cooling fan: 10-30A depending on size.

Q5: How does this relate to battery capacity?
A: Battery capacity (Ah) divided by current draw (A) gives estimated runtime hours.