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A battery is nothing more than a storage device for electric power. The alternator changes the kinetic energy given off by the engine into electrical energy. If the battery can be charged and store energy but the battery keeps discharging after you use the vehicle, check the alternator. If someone accidentally reversed polarity EVEN BRIEFLY while jump-starting the vehicle the diode plate is probably destroyed and you will have to replace or repair the alternator.

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โˆ™ 2011-06-22 02:04:39
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Q: Does a dead battery cause the alternator to not work after it is charged?
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Related questions

Would a bad alternator cause a battery to go dead?

either the alternator is dischargeing the battery or it is going flat just because its not getting re charged


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.


How long do you run your car after a a car jump?

I assume you mean how long to charge the battery. You should never let the alternator charge a dead battery if possible. The alternator is designed to keep the battery charged but not to charge a dead battery. You put a strain on the alternator and it can cause a diode to burn out. Drive home and then put a battery charger on the battery to fully charge it.


Will battery recharge after bad alernator is replaced?

An alternator is designed to keep a fully charged battery at peak level. It is not designed to charge a dead battery. Installing a new alternator on a car with a dead battery can in some cases ruin the new alternator. Fully charge the dead battery before starting the engine.


What should you do if battery was not charged before installing new alternator?

My advice is to charge the battery with a battery charger before starting the engine. You will be putting a heavy load on the alternator if you allow it to charge a dead battery. This could damage the alternator.


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.


Can a bad alternator cause a battery to be unchargable?

Yes, it can ruin the battery by overcharging it. If you are reading between 13.5 to 15.5 volts at the battery with the engine idling then more than likely the alternator is good and you battery has a dead cell. A fully charged battery will read 12.6 volts with the engine not running.


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.


Will car start if alternator is dead?

Yes, the battery starts the engine, and as long as the battery is fully charged the engine will start. The battery will loose it's charge if the alternator is defective and not replenishing the charge of the battery but the alternator has nothing to do with starting the engine.


Why won't your battery stay charged?

Defective alternator, dead cell in battery, something on pulling power from the battery when the vehicle is idle, corroded battery cable connections, or loose alternator drive belt.


What problems does a bad alternator cause?

Dead battery, car will not start


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.


Does driving the car also charge the battery if its dead?

Yes, once you have jump started the car (from another car's battery), driving the car will recharge the dead battery (provided the battery is OK). This is a terrible idea and may damage the alternator. Drive the car immediately home and charge the battery with a battery charger. Alternators are designed to keep a charged battery fully charged. They are not designed to charge a dead battery. This puts way too much strain on the alternator circuits.


What would cause an alternator to go bad?

Installing an alternator on a dead or poor battery will cause them to fail prematurely. trickle charge your battery before installing a new alternator. check all connections for corrosion especially grounds.


Will a bad alternator cause new spark plugs to smoke?

Spark plugs don't smoke. A bad alternator would cause a dead battery.


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.


What would cause my gauges to stop working after you started it?

i had this happen once on an 03 dodge minivan. the alternator went bad and the battery was going dead but had enough power to get the engine started. once i replaced the alternator and charged the battery the gauges worked again. good luck!


How long should jump-leads be left on a dead battery before it will be fully charged?

Recharging a dead battery by using jumper cables connected to another vehicle is a very bad idea. You are overworking the alternator on the donor vehicle and can very well destroy that alternator. Recharge a dead battery with a battery charger and never with another vehicle.


What would cause a battery to drain in a 1989 mercury sable if it is not the power cords or alternator?

dead cell in the battery or something is on pulling power from the battery.


What would cause the battery to not charge even when the alternator tests good on a 93 Mercury Cougar?

the battery could have a dead cell, this could cause it to not charge. Have the battery tested to be sure.


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.


Would a erg valve cause a dead battery?

no a egr valve would not make a dead battery. a bad alternator or maybe a bad connection post to battery would make it die ,


Why does battery go dead?

Alternator is defective, dead cell in the battery, or something is on pulling power from the battery.


What could cause a 1999 Regal LS to occasionally have a dead battery the battery and alternator test good?

Bad connection, connections to battery aren't tight.


Could something other that alternator cause battery to drain on 2005 C180 Kompressor?

Yes, a dead cell in the battery or something is on drawing power from the battery.