You can check this out yourself with a voltmeter. First check the battery voltage with the car off. It should be around 12.6 volts. After that get the car started and check the voltage again. It should be around 13.5-14.5 volts. If it is not then the alt. Is probably bad.
If these are fine and the battery is just dead in the morning then you probably have a drain on the battery. Check for lights on, etc.
Also, you should check the battery cable connections to be sure they are clean and tight.
Monday, May 7th, 2012 AT 8:27 PM