An alternator works to generate the right amount of electricity to power the electrical system and the battery in your car.

An alternator is an electrical generator driven by the crankshaft in your car's engine. It converts the mechanical drive into electrical energy to control all the electrical components, and battery, in your car.

How much does alternator replacement cost?

Symptoms and warning signs of a dodgy alternator include dim lights flickering or dim lights in the dash, headlights, or centre dome light), service engine light, odd noises, electrical issues, engine stalling and dead battery. On average, the cost of an alternator can range from $200 to $600. You may need to pay around $400 for the part itself. For good value alternator replacement you might be able to buy a second hand one.

What is an alternator in a car?

Alternators are basically generators that dispense electricity and recharge the battery in your car. Apart from some hybrid models, all vehicles that have a standard internal combustion engine use an alternator. An alternator produces electricity, regulates voltage, and converts voltage to charge the battery. It produces voltage to run power windows, power steering for the steering wheel, indicator light, battery light, locks and stereo.

What makes an alternator go bad?

A range of factors can cause an alternator to go bad including an issue with the computer, diodes, wiring, a bad fuse or broken belt or pulley. The alternator may also have just worn out due to age.

Infrequent driving can also could increase the charging load of an alternators and reduce the lifespan.