Battery Replacement
What is a battery?
The battery, in conjunction with the alternator, supplies the electrical power needed for the lights, stereo and all other electrical components of the car. The battery stores electrical power to start the engine, and helps electronic components function when the alternator cannot produce enough power.
How does the battery work?
While the engine is running, the alternator recharges the battery and provides electrical power to the vehicle. The battery stores this electrical power and, when the driver turns the key, uses the stored power to start the engine.
What are the symptoms related to a bad battery?
The battery is considered dead when there isn't enough charge to start the engine or run electrical components.
Normally, the first sign is dim lighting in the interior of the vehicle, and when you try to start it, the engine may crank slowly, or not at all. A very rapid clicking noise is normally heard if there is any charge left in the battery, but in many cases the vehicle will be completely unresponsive.
If the battery is losing charge while driving the vehicle, the battery warning light will illuminate, and the engine may stall.
Can I drive with a battery problem?
Only with some help. A jump start will be necessary most of the time. Cars with manual transmissions can be push-started, but this is tricky and can be dangerous, so battery problems should be addressed right away.
How often do batteries need to be replaced?
There's no specific mileage interval or age when batteries fail. But the older a battery is, the more likely it is to die. Other factors that can affect battery life include the climate you drive in, how often you start the car (or let it sit idle), and proper maintenance of the starting and charging system.