what the hell drains the battery so much?

[tim]

Sounds like a dead alternator to me but I have seen a battery give the same symptoms before.

Take a volt meter and see how many volts are at the batt with the engine running. Should be somewhere around 14 maybe a little lower if the batt is stone dead. If all is good there have someone turn on all of your accessories while you are watching the voltage.(a/c, headlights, blower on high, stereo, etc) Voltage can drop a little but it should quickly come back if the alt is ok.

Before you take your batt in for testing take it out of the car and charge it over night on a 10amp charge. Doesnt do a bit of good to test a battery that hasnt been completely charged. Even the 20-30 min rapid charge that the parts stores do before testing is just a surface charge that can give skewed results.