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Yes the boat will still need a battery. The alternator is used to recharge the batteries. So when the batteries are ran down by starting it or using the troll motor, the alternator only charges them back up so you don't have to.

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15y ago

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Can you eliminate alternator from car?

you need the alternator to charge the battery with no alternator when the battery drops to about 10 volts car will not run at all.


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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.


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Why would a good alternator not charge a battery?

If the alternator is good and the battery does not charge, then the battery may be bad. There could be problem with the electronics. You will need to take it to a place where they sell batteries. They have equipment to check out the battery and the wiring.


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Alternator on a car is for re cahrging the battery. So you can have a starter motor without a alternator but you wont get far down the road when the battery runs out of power and the car will die.


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