Different cars require different amounts of power and differently sized batteries.  Check your vehicle’s maintenance guide for information regarding what sort of batter your vehicle requires.  If you no longer have the maintenance guide, take your car to a mechanic for assistance in identifying the type of battery your vehicle needs. Additionally, buy a battery appropriate for your local climate.  Hot-weather batteries are often labeled “S” or “South.”  Cold-weather batteries might be labeled “N” or “North.”  If you drive off-road, you might want to invest in an battery that is better able to endure constant vibrations. Maintenance-free batteries are sealed and require no special attention.  Most car batteries are maintenance-free, but some require periodic filling with water.  Whenever possible, save yourself future hassle by purchasing a maintenance-free battery. Car batteries are tested by consumer organizations and auto enthusiasts.  Check a consumer reporting site or auto blog based in your nation for information about the types of car batteries sold there. Batteries should be rated based on their longevity and power. Even when stored, batteries can lose strength.  Always buy a new battery that was produced within the last six months. Some car batteries have dates labeled on them in an easy-to-understand way.  Others, however, will have a date in a kind of code, in which A stands for January, B stands for February, and so on.  (The letter “I” is excluded in such a system.)
Buy the right battery for your car. Buy a maintenance-free battery. Buy a battery that has good reviews. Don’t purchase old batteries.