What is the reason for the warning light to illuminate after restarting a car with a dead battery?

[MatthewLee]

After restarting a car with a dead battery, the warning light may illuminate due to a generator circuit malfunction. Related information: 1. Introduction: A generator (English name: Generators) is a mechanical device that converts other forms of energy into electrical energy. It is driven by a water turbine, steam turbine, diesel engine, or other power machinery, transforming the energy generated from water flow, air flow, fuel combustion, or nuclear fission into mechanical energy, which is then converted into electrical energy by the generator. Generators are widely used in industrial and agricultural production, national defense, technology, and daily life. 2. Expansion: There are many types of generators, but their working principles are all based on the laws of electromagnetic induction and electromagnetic force. Therefore, the general principle of their construction is to use appropriate magnetic and conductive materials to form magnetic and electric circuits that interact electromagnetically, generating electromagnetic power to achieve energy conversion.