The car is a 2004 Chevy Malibu Classic, by fresh do you mean a bigger
battery with more cold cranking amps? Or just a newer battery, I am
saving
to get some nice audiobahn 800 Watt 12s at circuit city would I need a cap
by then or is it just something you dont buy unless you NEED it?

By "fresh", I meant that a battery that is getting old tends to draw more
current to charge it. Since your car is a 2004, this probably isn't the
case for you.

When do you need a capacitor?
http://www.mobileaudio.com/rac-faq/rac-faq_2.html#SEC22