I own a 2011 lancer se, I have a after market subwoofer, 8000k hids, after market fog lights and a intake. My battery dies overnight or even within a few hours it does not start does anyone know what the problem is and solution?

 

Who installed the parts? Something could be draining the battery. If everything checks out, have your battery and alternator tested. I've seen batteries go bad after 2-3 years.

 

A short somewhere would be my guess

 

Disconnect neg terminal from battery
Use an multimeter set to 'amps'
Measure amp draw between the neg terminal and the battey neg post.


It should be less than 100 milliamps.


If more (and it sounds like it will be) - start pulling fuses for the aftermarket stuff first - to see if the drain goes significantly down. If not, then start pulling other fuses one by one. It is easiest if you have a friend help
Report back what it is.