my batt keeps being drained!, Suggestions Options

[ArizonaRed]

Didnt mod anything for this $hit to start happening. I was doing my weekly drive out of state on i75 and my lights dim and my cd player goes dead, everything dying. I pull the car off to gas station and car dies after all lights go out (this is at night). I figure its the alternator and figure it drained my batt. I go across the street (thank God for walmarts) at 2am and buy the best batt they got. put that in and drive home. Take it to a Midas shop and they check system and tell me alternator is fine and my batt was old so it took a dump. im like ok cool. same thing happens 2 weeks later, WTF? Another batt dead. This time i got it recharged but havent hooked it up yet. The celi is sitting around without power. Whats wrong with the car? (Also to note i took the car to a jiffy lube before the disaster and saw the guy spray my engine) could that have shorted something out? Even so the shop (Midas) said my alt and elec system were fine. The alternator was replaced two years ago so its fairly new. Any ideas?

OK i found This discussion but I dont think thats the problem. Anything besides this?

This post has been edited by ArizonaRed: Nov 17, 2006 - 7:33 PM