You have got corroded battery terminals. Car or truck batteries Use a optimistic and a damaging terminal (the two terminals that you choose to hook up jumper cables to when jump-commencing a car). Corrosion close to a battery terminal—a powdery buildup that’s commonly white, inexperienced, or blue—can hamper battery functionality. https://medium.com/@business.orders.online/quick-car-battery-replacement-sharjah-warrantee-تبديل-بطارية-السيارة-في-الشارقة-43bde418ddc4