During charging procedure some gas bubbles appear on the electrodes，especially amplified during fast charging.This phenomenon is called“burping.”Applying very short discharge pulses or negative pulses which can be achieved for example by short circuiting the battery for very small time intervals compared to charging time intervals in a current limited fashion，typically 2-3 times bigger than the charging pulses during the charging rest period resulting in depolarizing the cell will speed up the stabilization process and hence the overall charging process.This technique is called with other names such as“Burp Charging”or“Negative Pulse Charging.”