What is “overcharge“ in Li-Ion battery?
Aug ,2010

Battery is composed of battery cells and each battery cell is composed of different chemical components such as metals and electrolyte in order to produce required chemical reactions.  When a certain voltage is reached, the electrolyte may start to decompose and unable to perform chemical reactions.  And the battery cell gets weakened and then destroyed.  For Li-Ion cell, 1% overcharge triggers electrolyte decomposing. Safety protection installed in ZAPAK Li-Ion battery prevents such hazard.