It is essential to have a car battery replacement service at the ready when you need to jump start your car. A dead battery can leave you stranded with no way to get back to work or home. A faulty one can damage the alternator and can have negative effects on the vehicle's security system and shift interlock. When replacing the battery, it is important to pay attention to the quality of the electrical connections. The terminals should be free of corrosion and properly connected. Most batteries last for two to four years, but a car can run for much longer than that. This means that a battery replacement service must do more than simply replace the battery. Some cars even require PCM programming to ensure maximum battery life. The process involves checking and adjusting the charging system output against a factory OEM specification. Most car batteries are between 13.8 and 14.4 volts, but this varies depending on make and model. Batteries have a variety of different requirement...