How to properly charge lithium iron phosphate(LiFePO4) batteries in winter?

In the cold winter, special attention should be paid to the charging of LiFePO4 batteries. Since low temperature environment will affect battery performance, we need to take some measures to ensure the correctness and safety of charging.

Here are some suggestions for charging lithium iron phosphate(LiFePO4) batteries in winter:

1. When the battery power is reduced, it should be charged in time to avoid over-discharging of the battery. At the same time, do not rely on normal battery life to predict the battery power in winter, because low temperature will shorten the battery life.

2. When charging, first perform constant current charging, that is, keep the current constant until the battery voltage gradually increases to close to the full power voltage. Then, switch to constant voltage charging, keep the voltage constant, and the current gradually decreases with the saturation of the battery cell. The entire charging process should be controlled within 8 hours.

3. When charging, ensure that the ambient temperature is between 0-45℃, which helps to maintain the chemical activity inside the lithium-ion battery and improve the charging efficiency.

4. Use a dedicated charger that matches the battery for charging, and avoid using chargers of other models or voltages that are not compatible to prevent battery damage.

5. After charging, disconnect the charger from the battery in time to avoid long-term overcharging. If the battery is not used for a long time, it is recommended to store it separately from the device.

6. The charger mainly protects the overall voltage stability of the battery pack, while the balance charging board ensures that each single cell can be fully charged and prevents overcharging. Therefore, during the charging process, ensure that each single cell can be charged evenly.

7. Before the LiFePO4 battery is officially used, it needs to be charged. Because the battery should not be too full during storage, otherwise it will cause capacity loss. Through proper charging, the battery can be activated and its performance can be improved.

When charging LiFePO4 batteries in winter, you need to pay attention to issues such as ambient temperature, charging method, charging time, and charger selection to ensure the safe and efficient use of the battery.