Hey everyone! First, I want to let you know this is my first bike. I don't know much about the mechanics, but I'm trying to learn as I go, so please bare with me.

I got this 1995 zx7r in October last year and I loved it, worked great for a while. Then, it wouldn't start after I had just turned it off while I was down town. Jumped it and it seemed to be fine unless I let it sit for a while, then it would need jumped again. Now, it dies no matter what, even while I'm riding. The battery keeps draining. I'll charge it for a while, then it'll start, but will only run for about 20 to 30 minutes before I have to charge/jump it again. I've already replaced the battery, still getting the same problem. I know it's probably the alternator, but I didn't know if there was anything else I needed to check before I tried to replace it. Any help is appreciated! Weather is getting nice so I'd really like to be able to ride again soon!

 

I have a feeling that it has to do with the alternator.