There are many reasons for the aging of energy storage battery systems. Here are some of the main factors: Temperature: Temperature has a significant impact on the life of the battery system. Excessive temperature will accelerate the chemical reaction inside the battery, thereby accelerating the aging of the battery. At the same time, too low temperature will also reduce the activity of the battery, resulting in reduced performance. Number of charge and discharge times: The number of charge and discharge times of the battery is limited. Overcharging or discharging will cause damage to the battery and cause it to age. Storage time: If the battery is not used or stored for a long time, the chemicals in it may become passivated or lose activity, resulting in a decrease in battery performance. Usage environment: If the battery is used in an environment with high temperature, high humidity, dusty or extreme temperatures, its aging may be accelerated. Manufacturing defects: If there are defects in the battery manufacturing process, such as material problems, structural problems, etc., problems may occur during the battery aging process. External stress: Such as mechanical stress and thermal stress, etc., may cause damage to the battery and accelerate its aging process.