Replace battery terminals if needed or clean the battery terminals if they are encrusted with deposits. Use a wire brush dipped in baking soda and water to clean battery terminals of corrosion and ensure that the deposits do not block the flow of electrical current.
The battery supplies electrical power to the starter through the battery terminals, along with the rest of the electrical components of the vehicle, which is necessary to start the engine. The battery cable terminals connect the battery to the electrical system. The battery depends on the terminals to provide power to the starter motor, ignition system, fuel system and other electrical devices during engine starting.