Why is the engine battery fault light on?

[LePreston]

Engine battery fault light may be on due to the generator output voltage being lower than the battery voltage, generator not working, or power supply circuit failure. Here is some relevant information about engines: 1. Concept: An engine (Engine) is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, internal combustion engines usually convert chemical energy into mechanical energy. 2. Classification: Internal combustion engines, external combustion engines, external combustion engines, meaning the fuel burns outside the engine, gas turbines, jet engines.