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What Is the Self-discharge of Secondary Battery?

Self-discharge is also called charge retention capability. It’s the retention capability of battery for the stored power under certain environmental conditions in an open circuit state. Generally speaking, manufacturing processes, materials, and storage conditions are the main influence factors for self-discharge. Self-discharge is one of the main parameters to measure battery performance. Generally, the lower the storage temperature of the battery, the lower the self-discharge rate. But it should also be noted that if the temperature is too low or too high, it may cause damage to the battery and become unusable.

After the battery is fully charged and left open for a period of time, a certain degree of self-discharge is normal.

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