Battery Drain in 1 week

[sewell]

I'm Driving an E39 520i, my car battery drain in 1 week, i will use this car as a weekend car (this case happen 2nd time), can any sifu advise what normally gone wrong? my battery just change for 1 year only (DIN88 BOSCH S5 silver). the relay? electric component?SIFU please help

 

[Randy]

Happen to me too. Check for any light being switched on like boot ( u need to go into the boot and lock and see), glove box etc.
second could be any stereo wiring like amp etc
and finally could be the battery itself. sometimes, they jsut dont last

 

[infinityKL]

alternator?

 

[sewell]

i dont think is the alternator. after jump start the battery recharge. i am sure is something from the electric component.

 

[crusher]

Happened to me b4. Conned into changing my alternator, yet the problem persisted. There is some leakage somewhere.

 

[redshift]

and now it happen to me jugak,checked and when i take-out 7.5a fuse(under seat) and i assume that is for power windows and central lock,the leak is still have but in minimum current,if i put back...the leak is so kuat...any potential part are need to check.nowdays kena cabut bateri lorr...

 

[Randy]

Took year for me to figure out on mine. And finally figured out that the alarm is the culprit. there is leak as this is always on

 

[al_basori]

My X5 pon sama jugak... drain kuat sgt I rasa nak check alarm jugak le... dah 2 kali tukar batt ori..kopak duit aku