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How do you determine the charging current of a LiFePo4 battery?

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Charging current for LiFePO4 batteries

To determine the charging current of a LiFePO4 battery, you need to consider the battery’s capacity and the recommended charging current rate. The charging current for a LiFePO4 battery is typically specified as a percentage of the battery’s capacity, and it is recommended not to exceed the maximum charging current rate. For example, if you have a 100Ah LiFePO4 battery, and the manufacturer recommends a maximum charging current rate of 1C (100A), then the charging current should not exceed 100A.

However, it is also essential to consider the charging voltage, which should be kept within the recommended range to avoid damaging the battery. Some LiFePO4 batteries come with a built-in battery management system (BMS) that monitors and regulates the charging process to ensure safe and efficient charging. It is essential to follow the manufacturer’s recommended charging procedure and avoid overcharging or undercharging the battery.

LiFePO4 Charging Profile

Red dotted line: Current; Black dotted line: Voltage per cell

Lead Acid Charging Profile

Red dotted line: Current; Black dotted line: Voltage per cell

 

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