The car runs out of battery and automatically shuts down half an hour after starting under power. Is

There may be a problem with your generator. The method to check the generator is: start the engine, then use a multimeter to check the voltage between the two poles of the battery. The voltage should be 14 V. If the voltage is lower than 14 V, it means there is a problem. your generator. You are right. When the engine starts, all of the vehicle's electricity is drawn from the generator, meaning that the vehicle's electrical equipment is not drawing electricity from the battery at that time. This means that after starting the engine, the battery can be removed.