With the growing demand for solar energy storage, off-grid power systems, RV, and marine applications, 12.8V #LiFePO₄ batteries have become a popular choice thanks to their high energy density, long cycle life, and built-in deep cycle performance. One of the most frequently asked questions is: how can these batteries be connected to achieve the right voltage or capacity for different projects?
Series Connection: Higher Voltage for Inverters
When batteries are connected in series, the positive terminal of one battery is linked to the negative terminal of the next. This increases the overall voltage while the amp-hour (Ah) capacity remains the same.
For example, four 12.8V 150Ah batteries in series provide:
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Total Voltage: 51.2V
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Capacity: 150Ah
This setup is ideal for 48V solar inverters and telecom backup systems, where higher voltage ensures greater efficiency and reduced cable loss. For safety, CSPower recommends connecting up to 4 batteries in series.
Parallel Connection: Longer Runtime with Larger Capacity
When batteries are connected in parallel, all positive terminals are linked together and all negative terminals are linked together. The voltage remains 12.8V, but the total capacity multiplies.
For example, four 12.8V 150Ah batteries in parallel provide:
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Total Voltage: 12.8V
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Capacity: 600Ah
This configuration is suitable for off-grid #solar systems, RV, and marine use, where extended backup power is needed. Although technically more units can be connected, CSPower recommends a maximum of 4 batteries in parallel to ensure system stability, safety, and easier maintenance.
Why Choose CSPower LiFePO₄ Batteries?
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Flexible configuration: Easy to connect in series or parallel to meet different project requirements.
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Smart BMS protection: Built-in Battery Management System ensures safety from overcharge, over-discharge, and short circuit.
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Reliable performance: Long cycle life, stable discharge, and suitable for both residential and industrial applications.
Conclusion
Whether you need higher voltage for solar inverters or extended capacity for off-grid and #backuppower systems, CSPower’s 12.8V LiFePO₄ batteries offer a safe and reliable solution. By following the correct connection guidelines—up to 4 in series, and up to 4 in parallel recommended—you can build a system that is both efficient and secure.
CSPower provides professional lithium battery solutions for solar, telecom, marine, RV, and industrial backup applications. Contact us today to discover how our LiFePO₄ deep cycle batteries can power your projects with safety and confidence.
Post time: Aug-22-2025
