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The alternator may be failing. Remove it and have it tested at an Auto Parts store.

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15y ago
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Q: Why does the alternator light on my boat start to flash when the batteries are fully charged?
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Why does your vectron wave flash green while being charged?

That means it dosent have to be charged anymoreWhen you start to charge and the red light flashes for a while, then it changes from red to green alternate flashing this means that the actual batteries doing the charging are not fully charged. Either buy new batteries or make sure you charging batteries are fully charged before you attempt to charge it


Can a 93 Buick Century alternator handle 2 battery's?

If they are good batteries fully charged when installed and connected in parellel, yes it should handle them.


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.


Explain why a 24v system that runs off of 4 batteries which includes a 12v feed- that's powered by two of the batteries are getting no charge from the alternator.. the other two are charged well.?

With the batteries in series, the alternator provides the same current, and therefore the same charge to all the batteries. The alternator can take no account of any current being drawn from the 12V take off point. Part of the charge current is being fed to the 12V load and not to the batteries. Therefore, the 12-24V batteries are being fully charged while the 0-12V batteries are being partially charged. Over a period of time, the difference between the charge levels will become more obvious.


What are typical voltage for fully charged and half charged batteries?

A fully charged 12 volt automotive battery should have 12.68 volts.


Do new car batteries come fully charged?

Not fully, but these days come more than half charged, yes.


What is a cars batteries voltage?

12.6 volts when fully charged.


Are mobile phone batteries physically heavier when fully charged?

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What is the duty of an alternator in a car?

It is there to keep the battery fully charged.


Will a van start if you need a new alternator?

As long as the battery is fully charged it will start no matter the condition of the alternator. Eventually the battery will run down if the alternator is not keeping it charged.


What is the voltage of most car batteries?

12.6 volts when fully charged.


ATVs batteries are what volt?

12.8 - 12.9 volts is a fully charged battery