maybe,Battery problems can quickly arise from alternator problems. If your alternator is going bad, then it will no longer be able to charge your battery. You'll start your car, drive for awhile and your car will die.

The battery won't restart the car and you'll be stuck. Like I mentioned in the above point, the alternator powers almost all of the electrical systems of the car once the car is started and it recharges the battery as well.

So if your alternator is going bad, not only will your battery not recharge fully, but your car might die on you while driving because you aren't generating enough spark or other things in order to successfully run your vehicle.

 

maybe this can help you about Cranks,http://www.samarins.com/diagnose/index2.html

 

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