If your going to pay more money for one of these batteries it is a good idea to make sure that it still complies with what is required by the vehicle and the manufacture.
Cold cranking amps is a common standard used by all battery companies. The numbers actually relate to a rating of how much amps can be provided from a fully charged battery cranking at full blast for 30 seconds. This is without the voltage falling below 7 V on a 12 V battery.
The larger the engine the more cold cranking amps are needed as a rule of thumb. On a four cylinder engine, an example would be 350 CCA required by many manufacturers. A V8 gas engine would be higher at around 500 to 600 CCA for the recommended replacement battery. On a diesel engine that has extremely high compression and large displacement it is often recommended that 700 cold cranking amps be utilized.
Battery size selection
Too often I see battery stores that do not stock the proper size convince the car owner they should go for one that is bigger and then modify the hold downs so that it can be installed.
You also want to make sure that the height of the battery is no higher than the factory issued one. You do not want allow the terminals to short across the vehicles hood when it is closed. Find the Standardized group numbers that are provided in your owner’s manual and on the factory battery information tag. These group numbers are used to indicate the physical size as well as the cold cranking amps rating as well as reserve capacity of the replacement car battery.
For these reasons I personally trust the size and selection that the factory provides in the form of the original equipment battery (OEM). If I go to a store that does not have the size I need I go somewhere else as opposed to trying to stuff a different size battery in the car. Just my opinion.
You can visit my other automotive blog for more facts about car batteries and how to make them last longer.
Or you can switch gears (no pun intended) and read the latest posts on the online auto repair blog.