[feroz]

Hey guys, last couple days when I would start the car I felt it wasn't a strong start. This morning I tried starting it and lights would come on for a few seconds but nothing else. So basically it ai't starting. I am thinking its the battery which is weak and I probably have to replace it.

Quick questions, do I have to pick up a battery from BMW dealership or can I pickup one somewhere else like NAPA?
Secondly I don't think installing it myself should be that hard.

Please give me your thoughts and suggestions.
Thanks.