Car batteries do not last the lifetime of a car. They go bad after some years of usage. A good battery can last for around 2 to 4 years or more, depending on usage.
The first mistake a car owner can make is to buy a substandard battery that cannot stand the test of time.
Now, away from buying a low quality battery, let's discuss practices that kills battery earlier than their expected life time even if the battery has a high quality.
Practices that reduce a car battery's lifespan
Parking the car for a long time