Understanding Battery Cell Configuration: Series and Parallel
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Battery cells are the basic building blocks of a lithium battery pack. To achieve the required voltage and capacity, individual cells are connected in series, parallel, or a combination of both. Series ConnectionConnecting cells in series increases the overall voltage of the battery pack. For example, multiple cells connected in series can form a higher-voltage battery system for electric motorcycles and other electric mobility applications. The number of cells connected in series is usually represented by "S", such as 13S, 16S, or 20S. The required series configuration depends on the voltage requirements of the application. |
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Parallel Connection
Connecting cells in parallel increases the overall capacity of the battery pack. A parallel configuration is commonly represented by "P", such as 2P, 3P, or 4P.
By increasing the number of cells connected in parallel, the battery pack can provide greater capacity while maintaining the same nominal voltage.
Series-Parallel Configuration
Many lithium battery packs use a combination of series and parallel connections. For example, a 16S2P configuration means that 16 groups are connected in series, while each group contains 2 cells connected in parallel.
This configuration allows manufacturers to achieve a specific combination of voltage and capacity according to the application requirements.
Why Cell Configuration Matters
The correct cell configuration is essential for battery pack performance. It affects the pack's voltage, capacity, current capability, size, and overall design. Cell consistency is also important, as differences between cells can influence the performance and service life of the complete battery pack.
At TENZ ENERGY, we design customized LiFePO₄ battery packs according to different application requirements. From cell selection and matching to pack configuration, BMS integration, and final testing, every step is carefully controlled to provide safe, stable, and reliable battery solutions.
Understanding series and parallel configurations is an important step in designing the right lithium battery pack.