Well if you didn't get it its my battery...It all started last night when i was driving home my speakers were sounding all crackly, I thought maybe they were just getting old. But when I got home and cut the car off my windows my power windows were going up so slow then I knew it was my battery. So this morning I went to crank the car up and it just couldent do it.

The thing is I just replaced the battery like 3 or 4 months ago. before that I thought maybye it was the alternator, so I bought a new one and installed it.
But I got the same problem old Battery couldn't hold a charge. Thats when I bought the knew one and I took the new alternator out and tested the old one at Kragen and they said it was good, so i put it back in. Everything seemed fine for a while then my volt meter would read like 18. So someone told me my volatge meter was no good in the alternator. So now I'm thinking do you think my battery died because of that?

 

Your internal voltage regulator is probably toast if it's putting out 18 volts. A toasted regulator will also toast your battery. Time for a new alternator.