0
Yes...never try to charge a dead battery with an alternator. It can cause sudden alternator death. There is a paper that comes with many rebuilt alternators that recommends always charging a dead battery before running the vehicle to prevent sudden alternator death.. Good advice.
AnswerThe alternator will have to work very hard until the battery is charged fully.If the battery is zero volts and has a low resistance to the charging current from the alternator, the alternator will be under extreme stress, but this could not happen because the electric current used to power the magnetic field inside the alternator runs off of the battery--this is a natural fail-safe against huge damage being done. There is also a charge regulator that normally is in the circuit that prevents the battery from getting too much voltage or current from the alternator. If this circuit is damaged or badly designed, then that portion of the electrical system in the vehicle could be burned out.
There are usually about 6 high current low voltage drop diodes inside the alternator that can be damaged if excessive current is drawn from it to try to charge the battery or power the vehicle's electrical accessories. These can fail or be damaged and about to fail in the near future. It is possible in some alternators to repair them by replacing some of these damaged diodes. The repair task becomes useless if the electrical windings of wire inside become shorted or damaged due to burn out temperatures being caused by excessive current flow--then it is time for recycling the unit and getting a new replacement alternator.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
If you constantly run your car with a dead battery will this hurt your alternator?
Yes, alternators are designed to maintain the battery, or recharge a battery that has been slightly discharged from starting the car. When the alternator is used to recharge a dead battery, it causes the alternator work harder and longer than it is designed for, causing it to overheat, thus causing damage to the alternator. A battery charger should be used instead. They are designed for charging dead batteries. After the battery is charged, let the alternator maintain the charge.
Why your blackberry bold will not trun on?
No battery, discharged battery, poor electrical connection, damage.
Should your car start right after changing the alternator?
If the battery is fully charged and the starter is working properly it will turn over and start. The alternators sole purpose is to supply voltage to the vehicle and battery when the engine is running. When the engine is not running the alternator has nothing to do with starting the engine. If the alternator went bad and the battery was discharged then you will have to charge the battery before it will be able to start the engine. Do not jump start the engine with a dead battery if you can avoid it. This puts a strain on the alternator trying to recharge a dead battery and can damage the alternator, even a new one.
Can a battery with to many cold cranking amps burn up an alternator in a 2001 vw bug?
"Big" Battery Damage Alternator?No, it should not damage the alternator. If this has happened it's probable that the problem is somewhere in the wiring circuit connected to the battery and alternator.
What would be wrong if a sebring wont start or make any noise but it will start with a jump?
Either a discharged battery or a corroded battery terminal. The battery could be discharged because the alternator isn't working.
Can running a new alternator on a half charged battery cause damage to either the battery new alternator voltage regulator etc?
Not likely, but running the engine with a dead battery can damage some alternators. Always fully charge the battery when installing an alternator.
Will charging a car battery in situ damage the alternator?
No
What damage can result from connecting the battery cables to the wrong terminal battery post?
The battery will be Damaged. Possible damage to the Started Relay. Also check the alternator, more specifically the voltage regulator circuit which is built into the alternator. The battery will be Damaged. Possible damage to the Started Relay. Also check the alternator, more specifically the voltage regulator circuit which is built into the alternator.
Is it common to have to replace both the battery and the alternator together?
It's not at all uncommon. A failing alternator can easily damage a battery.
How do you know when an alternator goes out on a Toyota Corolla?
the battery will not be recharged and will soon become inoperable or discharged {dead}
What is a way to check alternator car should stay running if battery is disconnected?
If the alternator is not working the battery gets discharged. In most cars a light will show on the dashboard - battery light icon, and this will suggest fault in the battery or alternator. You will need to start the car and check if it is charging the battery, and most garages will do this check for you
How hot is normal for a new alternator to get when idling for an hour after replacing it and the battery on a 1993 Buick Skylark?
They will run somewhat hot while charging; if you put your battery in discharged however, that makes the alternator work much harder. A alternators job is to maintain the charge in a battery not to charge a discharged battery.Keep a eye on it, it will probably be OK once the the battery is topped off.
