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An alternator has diodes which transform ac voltage to dc voltage so that the battery gets negative and positive current on its poles thus making the battery to be charged.

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Q: How does an alternator keep a cars battery charged?
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Related questions

What is the duty of an alternator in a car?

It is there to keep the battery fully charged.


Why wood my red wire going from alternator plug to batterry?

This wire allows the alternator to keep the battery charged.


What is the role of a Alternator Repairer?

The alternator of a car is responsible for charging the car battery. Someone who repairs a broken alternator ensures that the alternator works again and continues to keep the car battery charged.


Can an alternator charge a car battery?

That is the purpose of an alternator. The keep the battery charged and to run all the electrics on the vehicle. However it is never a good idea to allow the alternator to charge a dead battery. This will put a strain on the alternator and may damage it.


Would a car stall if the battery was dead?

The problem is probably the alternator. If the alternator fails to keep the battery charged the battery will keep the car running until it can no longer supply voltage to essential systems and the car will stall.


Will battery lose power if alternator is bad?

Yes, the job of the alternator is to recharge the battery and run all the electronics when the car is in use. If the alternator is defective and not putting out the required voltage to keep the battery charged it will soon run down.


How do you tell my alternator is faulty 2006 impala?

An alternator keeps the battery charged in a vehicle. In a 2006 Chevrolet Impala when the alternator fails the battery will keep dying and no power will be available when attempting to start the car.


Why would the battery light come on when I start a 2002 Chevy Impala?

it indicates that the alternator is not functioning sufficiently to keep the battery charged.


What does the battery warning light mean on a 1998 ford e350?

It normally means the alternator is not putting out enough voltage to keep the battery charged and is defective. Can be a loose alternator belt also.


What is the voltage output for the alternator on a 2002 Kia Spectra?

It has to be 13 plus volts to keep the battery charged. The car requires a 12 volt battery to start and run this vehicle, so you need more then 12 volts to keep the battery charged.


How do you run car to charge up new battery?

New batteries almost always come fully charged. If it was not then charge it with a battery charger and do not use your vehicle alternator to charge a dead battery. You may do harm to the alternator which is not built to charge a dead battery but is instead built to keep a good battery fully charged.


Why doesn't 2001 kia sportage keep battery charged?

I would start by checking the alternator yourself or take it and have it checked. If you had'nt had any battery issuses like hooking battery up wrong It is prob. your alternator.