A motor vehicle gets electrical current from an automotive rechargeable battery. The battery's key function is to feed the starter, which starts the engine. Even when the engine is running, the demand for the car's electrical system is fulfilled by the battery with the alternator charging.
In most vehicles, lead-acid batteries are used which are highly reliable, despite the motion, cramped conditions, and temperature changes. These batteries usually last about three to five years.
Signs of battery gone bad in an automotive vehicle are: