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LiFePO4 Battery: Series and parallel connection

LiFePO4 Battery: Series and parallel connection

In order to meet the needs of people's electricity, lithium iron phosphate battery use becomes more and more diversified, and the technology is also constantly updated. Sometimes the voltage and capacity of a single battery can not meet the needs of people's electricity, in order to get a higher voltage and higher capacity, battery packs often become the first choice.
The use of series and parallel connection of a battery to form a system, you can get more power support, but series and parallel connection also have a lot of things to pay attention to.
Tips: always pay attention before connecting!
1. Same model (BMS, capacity, voltage)
2. Same brand
3. Recent purchase (within 3-6 months)


Reasons why LiFePO4 Batteries are connected in series and parallel.
1. In order to get the desired operating voltage, several lithium iron phosphate batteries can be connected in series.
2. If you need higher capacity and higher current, then connect the LiFePO4 batteries in parallel.
3. The above two methods can be combined to achieve high voltage and high capacity to meet the demand for electricity.
If the amount of power required is not limited by the available batteries, then you can purchase the battery type that meets your needs. However, due to the limited number of models, while some batteries can not be produced to fit the specifications, so the use of series-parallel connection method can be a flexible solution to more power needs.

Series and Parallel Connections
Series
Appliances are connected in the circuit in sequence at the beginning and end is the meaning of series circuit, the circuit has only one path, and any open circuit at any place is the characteristic of series circuit.

Parallel
Parallel circuit is to make in the composition of parallel circuit elements between the current has more than one independent path, for the circuit composition of one of the two basic ways. For example, a simple circuit consists of two light bulbs and a 9V battery. If the two light bulbs are connected to the battery by two separate sets of wires, the bulbs are connected in parallel.
Parallel circuits are characterized by circuits with multiple paths, each of which is independent of each other, with one circuit element open and the other branches operating as usual.


Before making a series-parallel connection, you should read the instruction manual of the product, especially focusing on the precautions mentioned in the series-parallel connection, so as to avoid injuries or accidents caused by improper connection.


Attention:

If you mix different capacity or old and new lithium battery packs together, there may be leakage, zero voltage and other phenomena:
This is due to the charging process, the capacity difference leads to charging some batteries are overcharged, some batteries are not fully charged, when discharged, there are batteries with high capacity are not discharged, while the low capacity is over-discharged. This vicious cycle, the battery is damaged and leakage or low (zero) voltage.

Conclusion
Select the appropriate battery connection for your needs, but also pay attention to the maximum number of cells that can be connected to each connection, as well as the consistency of the battery brand, capacity, and newness. Understanding the configuration and capabilities of LiFePO4 batteries is critical to optimizing their use in a variety of applications. Whether you need a single high-capacity cell or a complex battery system in series or parallel, understanding the basics will help ensure the efficiency, safety, and longevity of your power solution.LiFePO4 batteries are powerful and versatile, making them an excellent choice for modern energy storage needs. 
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