What is the warranty period for a car battery?

[DeNorah]

Car batteries typically come with a one-year warranty. As an expendable part, car batteries have a relatively short warranty period. The car battery serves as the primary energy storage device in a vehicle, supplying power to all electronic systems. With modern cars becoming increasingly electronic, their reliance on the car battery grows stronger. A lack of battery power can render the entire vehicle inoperable. The functions of a car battery include: 1. Providing power for the car's starting and ignition systems; 2. Supplying stable DC power to the car's electrical appliances, ensuring that the electronic circuits and DC lighting systems can operate normally even when the car is parked; 3. Acting as a large 'capacitor' to stabilize voltage when the car is running at high speeds.