The Electricity Source of the Vehicle
Electrical supply to a vehicle is very important because it provides electricity to the starter motor and the on-board ECU. Without car alternators, starter motors with car batteries, we would return back to the stone age where every car owner would need to manually crank-start their car. Magneto supplied spark to the plugs once the engine was operating in the first cars. That eventually developed in to self-generating electrical system which is used in all cars these days.
To the average driver, the system might seem somewhat sophisticated, particularly when repairs are being explained by a mechanic. Nevertheless, the self-charging electrical system remains synonymous in concept, and many of the more notable improvements are in the area of overall performance. In this day and age, every car is fitted with a car alternator which maintain charge in car batteries and circulates electricity to the car. However, dependability remains an issue with the electrical components and replacing a battery or alternator are things one can anticipate over the course of owning a vehicle.
As long as a car has an electrical source to provide spark, the engine will continue to run. This is solved by using a 12-volt car battery, however, without an alternator to maintain charge, the drain on the battery will be significant and the system will run out of juice in a short time. Conversely, an alternator supplies ample electrical to run the systems, but the engine cannot start without power from a battery. This is why every car owner should pay attention to certain electrical accessories for signs of a failing battery.
When car batteries gets weak, some of the symptoms include slow engine cranking, slower turn signals, dim headlights and even overheating. It is easy to check a battery, this should be the first thing one should do at the first signs of a diminished electrical supply. Since car alternators are essential to the system, these should checked on a regular basis as well. A comprehensive check will determine whether the battery has simply outgrown its life span, or the alternator no longer has sufficient output to maintain a proper charge in the battery.
