Which formula is used to calculate the watt-hour rating of a battery?

The formula for calculating the watt-hour (Wh) rating of a battery is Wh = Ah x V. This equation reflects the relationship between ampere-hours (Ah) and voltage (V), illustrating how energy stored in a battery can be quantified.

In this formula:

• Ah, or ampere-hours, measures the electric charge a battery can deliver over time.

• V represents the voltage of the battery, which indicates the potential difference that drives the charge through a circuit.

When you multiply the ampere-hours by the voltage, you get the total energy capacity of the battery in watt-hours. This measurement is critical for understanding how long a battery can power a device and how much energy it can store.

Using the other formulas provided does not yield a correct representation of watt-hours:

• Dividing ampere-hours by voltage or calculating it in a manner that adds these values does not accurately represent the energy available from the battery, thus serving no practical purpose in determining watt-hour capacity.

Understanding this formula is essential for anyone working with batteries in various applications, ensuring they can make informed decisions about energy usage and battery selection based on capacity.