I was cleaning my car on Friday and left the stereo on by mistake and it drained my battery. Then I had to jump the car to drive it home and on my way home my lights kept dimming out and advance track light kept coming on. After I got home I took the fuse out for my amp and took out my subwoofer. The next day tried starting the car and it wouldn’t start. I think I need a new battery. I don’t want to keep driving around and kill my alternator. Can someone please tell me what I need and if it’s the battery how much would it cost me?