Hello, I have a 2007 Crossfire and recently replaced my battery. The car is now dead. Besides a faulty battery, what else (mechanical? electronic?) would cause the battery to drain so quickly? I drive it once a week. Thanks in advance for any assistance.

 

Alarm in the cowl area underneath wiper linkage batteries can go bad draining your car battery

 

Also be sure the battery connections are clean and the alternator is good.

 

Do not waste time stabbing at the reason, follow the advice of pizzaguy to find the leak. Check around the terminals first though for loose or damaged cables.

 

Test your battery voltage with a multimeter or turn the key to on and stick one of those cheap volt meters in the cigarette lighter. If you read 12V+ but have a no start issue it is probably not because the battery is bad, it is probably because you have deteriorated connections/ cables/ground points that can't deliver the amps required to turn the starter.

If the battery is in fact dead or reading significantly low voltage something is causing excessive parasitic drain after 1 week of sitting. Re-charge the battery, and if you don't have one, buy a cheap multimeter from Amazon, watch a video on how to use a multimeter as there are 100's on Youtube (fail to do that and you'll probably fry it the first time you try to use it), set it to measure amps, disconnect the negative terminal from the battery and place the feeds in-line between the negative terminal and negative cable, read the level of amps being drawn with everything turned off, doors closed, no interior lights on, etc. as your baseline and if it is between say 50 to even 100 milliamps you don't have a parasitic drain problem. If it is higher start pulling and replacing fuses 1 by 1 while watching the amp draw and see which one or ones cause a significant drop down when pulled. Find the fuse or fuses that makes the difference you'll find the culprits of the high parasitic drain you are experiencing.

 

Thanks to all of you for your responses.