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Common troubleshooting issues of lithium-ion batteries

Uneven charging causes low voltage: After battery testing, uneven charging of the battery cells is caused by inconsistent contact resistance or charging current in the testing cabinet during charging. The voltage difference is small when stored for a short period of time, but it is significant when stored for a long time. This low voltage has no quality issues and can be solved by charging. Measure the voltage after being charged during production and stored for more than 24 hours.

● Temperature abnormality: If the temperature of a lithium-ion battery is abnormal during charging or discharging, such as being too high. The reason for this situation may be a slight short circuit phenomenon inside the lithium-ion battery.

● Short cycle life of battery pack: The battery pack terminates its lifespan within the promised usage time. This is because the consistency of the battery pack is poor or the performance of individual series connected batteries is particularly poor, resulting in the battery pack not being fully charged and not fully discharged during charging and discharging.

● The battery pack suddenly stops working during use: it may be due to the lithium-ion battery being discharged and reaching the minimum lower limit voltage of the protection board or controller, causing the protection board or controller to stop working; Or if the continuous working current exceeds the design protection current of the protection board or the continuous current of the controller, causing the protection board or controller to stop working, this will cause the battery pack to suddenly stop working.

The battery cells are swollen and swollen, with gas and liquid leakage that has a stimulating odor. The screws turn black, the battery cells soften, precipitate and harden, overheat, and the ears fall off. Overcharging and discharging overload.

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