Series and Parallel Battery Configurations

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Series vs. Parallel Battery Configurations

A comprehensive guide to voltage, current, and system stability

Visualizing the flow of electricity in different configurations.

🔗 Series Configuration

In this setup, the positive terminal of one battery connects to the negative of the next.

Key Outcome

Voltage Increases | Current Stays Constant

📊 Example: Two 1.2V 2000mAh batteries in series = 2.4V and 2000mAh.

Detailed Benefits:

Increases output voltage for high-power applications.
Simple connection method suitable for most electrical systems.

Risks & Challenges:

Voltage imbalances can cause system instability.
Failure of one battery affects the performance of the entire pack.

⚡ Parallel Configuration

All positive terminals are connected together, and all negative terminals are connected together.

Key Outcome

Capacity Increases | Voltage Stays Constant

📊 Example: Two 1.2V 2000mAh batteries in parallel = 1.2V and 4000mAh.

Detailed Benefits:

Increases total capacity, ideal for high-current output devices.
Lower load on each battery, improving overall system stability.

Risks & Challenges:

Voltage is limited to that of a single battery.
Requires precise balancing to prevent uneven aging.

🎯 Decision Principles

Voltage Needs

If your device requires high voltage (e.g., high-power motors), choose Series.

Runtime & Current

If your device needs to run for a long time or requires high current, choose Parallel.

Stability & Life

Choose Parallel to extend battery life and reduce the impact of single-battery failure.

Large Power: Leading LiFePO4 Battery Manufacturer for Custom Series and Parallel Battery Configurations

At Large Power, we specialize in delivering custom LiFePO4 battery solutions, offering both series and parallel configurations to meet the diverse needs of our global B2B clients. With over 20 years of expertise in lithium battery pack design and manufacturing, we provide fully tailored configurations based on your specific voltage, capacity, and interface requirements.

Series Configurations increase the overall voltage by connecting multiple cells in series, ideal for applications where higher voltage is needed. On the other hand, Parallel Configurations maintain the same voltage but increase the overall capacity, perfect for scenarios demanding longer runtime or higher current output.

All our battery packs are built with Grade A cells and integrated with an advanced Battery Management System (BMS) for protection and monitoring. Our products are fully compliant with international certifications such as UN38.3, UL, CE, and RoHS. Whether you need a single prototype or mass production, our engineering team is ready to support you from concept to delivery, helping you choose the optimal configuration for your project.