1. What is the Battery Voltage Equation?

The battery voltage equation calculates the voltage (V) by dividing the power in watts (W) by the current in amps (A). This fundamental electrical relationship helps determine the voltage required or produced in a circuit.

2. How Does the Calculator Work?

The calculator uses the voltage equation:

Where:

• \( V \) — Voltage in volts
• \( W \) — Power in watts
• \( A \) — Current in amps

Explanation: This equation comes from Ohm's Law and shows the relationship between power, current, and voltage in an electrical circuit.

3. Importance of Voltage Calculation

Details: Calculating voltage is essential for designing electrical systems, selecting appropriate batteries, and ensuring compatibility between components in a circuit.

4. Using the Calculator

Tips: Enter power in watts and current in amps. Both values must be positive numbers. The calculator will compute the voltage in volts.

5. Frequently Asked Questions (FAQ)

Q1: Can I use this for AC circuits?
A: This calculates RMS voltage for DC circuits. For AC, additional factors like power factor must be considered.

Q2: What's the difference between voltage and current?
A: Voltage is the electrical potential difference, while current is the flow of electrical charge.

Q3: How does this relate to battery capacity?
A: Battery capacity (Ah) combined with voltage determines total energy storage (Wh).

Q4: Why is my calculated voltage different from battery rating?
A: Battery voltage varies with state of charge, load, and temperature. Nominal voltage is an average value.

Q5: Can I calculate watts if I know volts and amps?
A: Yes, using W = V × A. This calculator can be rearranged to solve for any of the three variables.