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Battery is good, alternater good, but battery keeps draining

(1997 Cadillac DeVille)
in Buffalo, NY on April 11, 2009
What could be the problem when something keeps pulling the battery down? Usually the car radio & cd player won't work..then the car goes dead after a few days.
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Popular Answer
on April 13, 2009
There is something that is draining the vehicle that stays on when the key is turned off. The system should not have more than a 50MA (milliamp) drain on the system. To find the root cause a ammeter will have to be hooked up and fuses pulled until the drain goes away, then each branch of the circuit disconnected until the source of the drain is found.
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