Corrosion can destruction the battery terminals with time. Greenish residue over the terminals indicates corrosion. Thoroughly clean the terminals as part of the process of changing an auto battery. AGM Batteries - Absorbent Glass Mat (AGM) batteries were being designed in the eighties and have a fibreglass matting which surrounds https://macrobookmarks.com/story18201872/facts-about-car-battery-charger-revealed