Although a car battery is enormous and heavy, it is typically simple to replace. The old battery's positive and negative connections are removed, and the bracket or clamps holding the battery in its tray are released in order to remove it. After that, the new battery purchased from Champions Battery, as being the best place to buy car batteries,  can be placed on the tray, tightened, and the positive and negative connections reconnected. The electronics are supplied by a battery saver or external power supply to sustain voltage while battery replacements are made using electronic modules in late-model autos. As a result, learned electronic memory settings will be maintained.