The battery present in a car is a rechargeable battery. It supplies power to the car (electric energy). Habitually this battery is called as Starting, Lighting, and Ignition SLI. The car battery alone ignites your car with its electric energy.
There are some drawbacks in lead-acid batteries which is they get drained completely. For instance, by mistake, you have left your car head lights on. Thus, the batteries in your car will drain quickly. It is advisable that to turn off your car lights.