Can a Car Charge the Battery by Idling Without Driving?
1 Answers
When a car is started but not driven, the battery can still be charged. Operating Principle: The car battery begins charging once the engine is started. The battery is charged by the car's engine. After the car is started, the alternator begins working, receiving power from the engine via the belt. As long as the engine is running, the car battery remains operational. During driving, the faster the engine speed, the more electricity the alternator generates, increasing its output. Precautions: There is another charging method for car batteries called slow charging, which takes 10-15 hours. Deeply discharged batteries must undergo slow charging; otherwise, insufficient charging time and inadequate charge will directly affect the car's driving performance. Lifespan: After prolonged use or multiple excessive charge-discharge cycles, the lifespan of a car battery decreases, affecting vehicle performance. At this point, a car battery tester should be used to measure the specific remaining lifespan percentage to determine whether the battery needs replacement.