The average lifespan of a Duralast car battery is three to five years, as of 2015. All Duralast batteries come with a two-year free replacement warranty. Duralast gold and platinum batteries come with a three-year warranty.
Duralast batteries have a patented design and 800-plus cold cranking amps. They start in freezing temperatures in most cars. They have a large reserve and are maintenance-free.
The same company that manufactures Duralast batteries also makes Die Hard and Sears car batteries. Duralast batteries have similar performance ratings to Die Hard batteries. Auto Zone is the official retailer of Duralast batteries, as of 2015.