A car battery size chart is a useful tool in determining the proper battery for your car. Car batteries are manufactured in a variety of sizes, and the current capacity must be properly matched to the vehicle. A battery size chart contains a list of automobile manufacturers and a list of vehicles manufactured by each of those companies. The list is further broken down into the brands of vehicles and the model year. Under that category, you will find the battery that fits your vehicle. You can find battery size charts on the Internet and in automotive outlets that sell a large variety of vehicle batteries.