If battery is known good, you proably have a parisitic drain on the battery .
Something is staying on after car is shut down like a light in trunk or glove box ect ......
if there is nothing evident you can disconnect the positive side of battery and connect a test light between battery and cable and it should come on if you have a drain .
While watchin light start pulling fuses till light goes out and when light goes out the fuse you pulled will be the circuit the drain is on .....put fuses back in if lite doesn`t go out so the right fuse will go in right spot
bg, October 2008
