Overheating of energy storage lithium batteries is a serious issue that can not only reduce the battery's performance and lifespan but also pose safety risks such as fire or explosion. When a lithium battery overheats, several measures can be taken to address the problem.

The first step is to immediately stop using the battery. Continuing to charge or discharge an overheating battery can exacerbate the situation. If the battery is part of a larger system, such as an energy storage system connected to a PV setup or an electric vehicle, disconnect the battery from the power source and any load to prevent further energy transfer.

Next, move the overheating battery to a well - ventilated area. Good ventilation helps dissipate the excess heat. Avoid placing the battery in an enclosed or confined space, as this can trap the heat and cause the temperature to rise even further. If possible, place the battery on a non - flammable surface to minimize the risk of fire in case of any unexpected events.

Check for any visible signs of damage or malfunction. This could include swelling, leakage, or abnormal odors. If such signs are present, do not attempt to use the battery again. Instead, contact the manufacturer or a professional battery - recycling service for proper disposal. Using a damaged battery can be extremely dangerous.

If the overheating is due to a charging or discharging issue, review the charging and discharging equipment and settings. Ensure that the charger or inverter is functioning properly and is compatible with the battery. An incorrect charging voltage or current can cause the battery to overheat. Consider using a battery management system (BMS) if one is not already installed. A BMS can monitor and control the charging and discharging processes, preventing over - charging, over - discharging, and excessive current, which are common causes of overheating.

In some cases, overheating may be caused by a manufacturing defect or a faulty battery cell. If you suspect this is the case, contact the battery manufacturer's customer service. They can provide guidance on how to proceed, which may include returning the battery for inspection, repair, or replacement under warranty. Regular maintenance and monitoring of lithium - battery systems can help prevent overheating issues in the first place, ensuring safe and reliable operation.

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