There are a number of factors to determine which size battery is best for your truck, such as battery group size, cold cranking amps and reserve capacity. Considering these important attributes helps ensure owners do not potentially damage a vehicle by using the wrong battery size.
Battery group size refers to the size of battery that best suits the physical dimensions of one’s vehicle. Important to consider here are aspects such as battery dimensions and the placement location of battery terminals. However, some vehicles are capable of accommodating different battery sizes, but this should be confirmed through the vehicle's manufacturer.
Cold cranking amps is an industry standard referring to a battery’s capacity to start a vehicle in cold temperatures. Specifically, the number of amps a 12-volt battery can deliver for 30 seconds at 0 degrees Fahrenheit maintaining voltage of at least 7.2 volts. A battery with a high CCA rating has a higher starting power.
The reserve capacity of a battery is a measure of how long a new, fully charged battery can continue to operate the vehicles essential parts at a minimum voltage if the vehicle's alternator fails. It is measured in minutes. Each vehicle has a recommended reserve capacity, and the exact amount required should be gathered from the manufacturer of the vehicle.