Our ratings put more weight on our life-test results than reserve capacity and cold-cranking performance; you're likely to find that the trade-off is worth it. We rate batteries in order of overall performance within group sizes and identify models that are sealed and maintenance-free.
Being proactive in replacing your battery can ensure that your car is ready to go when you are. Throughout the life of your vehicle, you will probably have to replace your car's battery a number of times. Either it gets old and has to be replaced or it is drained unintentionally when lights or another electrical accessory is left on.