When it comes to starting any vehicle’s engine, it all begins with the car battery. Without a properly functioning battery, you and your car won’t get far at all, which make it important for any driver to have a basic understanding about how car batteries work, and what to do if your battery stops functioning. Below you’ll find a brief and informative guide to the basic function of a car battery, the ways you can determine when its time to change your battery, and what to do if you encounter a dead battery in your vehicle.