A battery pack is an assemblage of one or more individual battery cells that are connected and secured together to form a single unit with a particular shape and dimensions. They can be arranged in a series, parallel, or a combination of both to deliver the desired voltage, capacity, or power density. Battery packs are identified by various characteristics, including cell size, the number of cells, battery structure, chemistry, chargeability, capacity, and voltage rating. These features are critical in determining the overall performance and capabilities of the battery pack. For example, the number of cells in the pack affects its voltage output and capacity, while the chemistry of the cells dictates the pack's discharge rate, cycle life, and safety features. The configuration of the battery pack depends on the specific needs of the application. For instance, series connections increase the voltage of the pack, while parallel connections increase its capacity. A mix of both series and parallel connections may be used to achieve the desired balance between voltage and capacity. The physical dimensions of the battery pack are also important, as they determine whether it is suitable for the intended device and provide constraints on its design. Overall, battery packs offer a convenient and efficient way to power a wide range of devices. By combining multiple battery cells into a single unit, they can provide the necessary voltage, capacity, and power density for a variety of applications, from portable electronics to electric vehicles and renewable energy systems.
