Do I need a new battery after replacing alternator?

No, because there is no need to, the battery doesnt damage from an alternator that doesnt work anymore and neither does a battery that doesnt work anymore damage any other part, accordingly the battery does not need to be replaced with the alternator. the battery needs to be replaced only when it can not work anymore.

How long will a car battery last with a broken alternator?

It entirely depends on the capacity of the car battery. If the battery does not have a full charge, the vehicle may run from 5 to 30 minutes.

Would an alternator drain a battery?

The alternator is responsible for recharging the car battery and powering electrical systems of the car such as the radio, lights, ignition, etc. This, in turn, will drain your car battery and cause the car not to start.

Can a new alternator charge a dead battery?

Q) Will an alternator charge a dead battery? A) Alternators are designed to maintain a battery’s charge, not to recharge a dead battery. Charging a dead battery with an alternator will result in premature alternator failure.

Can an alternator drain a brand new battery?

An alternator that’s not providing enough power can allow a battery to run down. According to Prestolite electric, an alternator producing less than 13.8 volts of power at idle is not producing enough current to charge the battery fully and needs to be replaced.

What are the signs of an alternator going bad?

The symptoms of a bad alternator include strange noises, similar to a grinding or whining noise and an illuminated warning light. Other less noticeable and less common symptoms include weird sounds and bad smells. A burning rubber smell becomes noticeable when the alternator is going bad because the alternator works with the belt system.

Can a bad alternator destroy a new battery?

If an alternator goes bad, it certainly can kill a battery. Car batteries don’t like being run all the way down. If you have a fairly new battery, you can usually get away with it once, maybe twice. If the alternator was ailing for a while, the battery may have been low for a long time, which also isn’t good for a battery.

How do you know if your battery or alternator is bad?

If the battery is working, it’s time to take a closer look at the alternator. There are certain signs of a bad alternator to look for: While running the car, take note of the interior lights and how bright these appear. If the dashboard gradually dims, that likely means the alternator is at fault.

How to test for a bad alternator?

Start the vehicle. Either jump-start it or charge the battery to get it started.

Disconnect the jumper-cables or whatever it was that you used to start the vehicle. Go back to the inside of the vehicle and eyeball the dome light.

If the vehicle stayed running after disconnecting whatever it was that got it going,then notice the dome light’s intensity.