John, Even though the light can and will go out which you would think the alt is ok, when the car is turned off and if the rotor is shorted there will be a current draw that would drain the battery. If you drive with out the battery hooked up, that will work in an emergency case. Just don't turn on anything extra or you will burn up the diodes and regulator in the alternator. Even though the car runs off the alternator when your above 12.66 volts and driving, the alternator is part of the circuit and is talking to the battery and then the car. John Hervey www.specialtauto.com -----Original Message----- From: john podlewski [mailto:flyboy_6876@xxxxxxxxx] Sent: Monday, April 05, 2004 11:34 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] BAD BATTERY TWICE Had my battery die on me, NEW Q.State Twice! YES TWICE! TWO DIFFERENT BATTERY'S 12.66 Volts! Second battery lasted two weeks until the car sat more than two to three days it died completely no lights, no gages, no nothing any suggestions? Until Jumped, but I suspect it to die any time now! To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/