To determine the correct battery size for a particular car, consult the owner's manual or a reference guide provided by a battery retailer. Their specifications should ensure that a battery has the correct dimensions and configuration to fit properly.
Fortunately, car manufacturers use a limited range of battery types, with each group containing batteries with a specific set of dimensions and configurations. In general, most Chrysler vehicles use group 34 batteries, while size 35 batteries fit Toyotas, Nissans and newer Hondas. Additionally, Ford, Lincoln and Mercury vehicles use group 65, and size 75 fits most General Motors vehicles. It should also be noted that, because they have more than one set of terminals, some vehicles can use batteries from two different groups.