Four reasons for the daily normal self discharge of lithium batteries

Four reasons for the daily normal self discharge of lithium batteries

When the lithium ion battery is not working, the phenomenon of the gradual consumption of electricity is called self discharge. The self discharge can not be completely avoided. It is generally considered that the daily consumption of 1%~2% is normal, for example, more than this number, it is abnormal self discharge.

Reasons for abnormal self discharge:

(1) the electrode material or the electrolyte has impurities, so that the impurities and the plates or different impurities will produce potential difference, forming a closed "local electric" and producing the current, making the lithium ion battery discharge.

(2) The partition is broken to cause a partial short circuit

(3) there are electrolytes or water on the lithium battery cover to discharge the positive and negative electrodes.

(4) the active material is off, causing the short circuit of the plate to cause discharge.