I HAVE A 2000 CADDY DEVILLE IT IS STOCK BUT IF I DONT START IT IN ONE OR 2 DAYS IT NEEDS 2 B RECHARGED…I HAD VOLT TEST…ALT TEST…NEW BATTERY…DVD PLYR DISCONNECTED…AND IT STILL DRAINS…WHAT IS PROBLEM CAN SOMEONE HELP ME IT IS ON TRICKLE CHARGE BECAUSE I DRIVE IT ON WEEKENDS…
Many things can cause a battery to drain. A trunk or glovebox light that doesn’t turn off. A shorted diode in the alternator. A module that fails to go to sleep. Or a relay that’s sticking. This is a problem that will take time and equipment to diagnose.
Tester
There are prior answers to your type of problem. You can see them by going to the red bar, above, click Search. Enter “battery drain” on Keyword line. Click Search. There will be numerous posts, and responses, on your problem.
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