Corrosion can injury the battery terminals with time. Greenish residue around the terminals suggests corrosion. Clean up the terminals as part of the endeavor of adjusting a car battery. Verify your present battery to view if it states AGM, VRLA or EFB. If it would not point out these acronyms https://medium.com/@business.orders.online/quick-car-battery-replacement-sharjah-warrantee-تبديل-بطارية-السيارة-في-الشارقة-43bde418ddc4