My cars dead after 5-6 days sitting. I had it checked today and it tested good. Any idea what may be causing it to drain. It's totally stock. Thanks

 

Is the battery the original?

 

Not original. i just got the car a few months ago, and the battery is not dated, so i have no idea how old it is.
p.s. just researched some old post on this. i'm probably going to get a new battery and a trickle charge since i rarely drive this car.