Power keeps draining!!!!!! on 1999 Cadillac DeVille

If I ask someone for a jump or use my jump starter the car works fine, but once I let the car sit it won't start and needs to be jumped again. That's only if my jump starter has enough juice. If I let it sit out for more than a day - nothing works. Not even the key less entry system works so I have to use the key to open the car. Help please!!!!!

by in Washington, DC on April 04, 2009
1 answer
ANSWER by on April 05, 2009
There can be a few reasons for this, and a thorough inspection and testing of the battery and charging system should help determine the cause.
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I have a 1969 cadallic sedan de ville (472 ci). if I park it for a few hours , the battery is completely dead. how do I find the consumer causing this. Thanks to all