Car battery chargers are some of the most common and widely sold car items in the consumer market. People used to use jumper cables to restart a car's batteries and this has proven to be dangerous at times because jumper cables cannot regulate the amount of voltage that goes through them. Car manufacturers made car battery chargers so as to address the ongoing problem that is associated with having to "jump" a car battery.
Some problems that one will encounter when trying to jump a car are usually associated with the installation of the jumper cables to the batteries of the car. Car battery chargers address this problem by being able to connect an external power source with the medium and its design allows for the user to simply attach it to the terminals of the battery.
Another problem is the regulation of the current that goes through the cables when they are connected with another battery. Jumper cables are designed to simply transfer a certain amount of voltage to another battery and do not have any regulation features. Car battery chargers are made with a built in regulator that allows for it to manage the amount of current that goes through to the receiving battery. They are also able to manage the different types of current that go through it at certain periods of charging.
These functions are associated with the batteries' ability to maintain the three key functions that allow for a charger to charge well. These are usually the charge termination, the charge time and the safe charging features. Charge termination is the ability of the charger to automatically disconnect from the power source and shift its level of charge to float charge.