King Louie is a supporting character from the 1967 Disney animated feature, The Jungle Book. Louie is an orangutan, inspired by Rudyard Kipling's classic novel. Louie did not appear in the book, however, because orangutans are not native to India.
Quick Answer. Overfilling the battery, poor design of the vent cap, age and distortion of the gaskets can all cause battery terminal corrosion. Nitrogen gas is emitted by the electrolyte in the battery. Material in the battery terminals and cable ends reacts with the nitrogen gas, and corrosion begins to form. Keep Learning.
As the charging system recharges the battery, the acid in the battery (sulfuric acid) starts to boil as it takes on a charge. When this happens the fluid levels in the cells will, over time start to drop exposing the tops of the cells to the air and this exposure will start to corrode the tops plates of the cells.