There is one auto shop near Sara Restaurant in Fariq Abdul Aziz, nearby Montaza, however they sell cheap batteries that do not last long.

For Toyota Camry, buy "AC Delco" battery that can work for around 10 months. You can buy Declo battery from Crazy Signal, behind Olympic Sports showroom. Start the car with cable, do not use AC, and go directly there. You can also find a few good shops where the auto accessories shops are located near the Crazy Signal.