What is a battery?

A battery is fundamentally defined as a connection of multiple electrochemical cells that are linked together. Each cell generates a voltage through a chemical reaction and, when combined in series or parallel, increases the overall voltage or current capacity beyond what a single cell can provide. This configuration allows batteries to supply more power for a longer duration, meeting various energy requirements for devices and systems.

Individuals may misinterpret the term 'battery' as synonymous with a single electrochemical cell, but this sits under the broader definition of what encompasses a battery. A battery comprises several cells that work together, which is why identifying it solely as one cell does not capture the complete essence of how batteries function in practical applications.

While a battery does store energy—this is a characteristic of batteries—it is not the definition that distinguishes it from other electrical components or devices. Additionally, labeling a battery as a renewable energy source is misleading since a battery itself can store energy generated from various sources, both renewable and non-renewable. Therefore, pinpointing a battery simply as a connection of multiple cells provides a clear and accurate understanding of its structure and function.