So, I'm fairly certain the problem is with the battery, but I figured I'd run it past you guys first. Problem started when I went out to my car, got in, tried to start it....and nothing happened. ampmeter didn't twitch, electric fan didn't come on, nothing. I figured I'd left the lights on or something, so I jumped it, took it for a drive, and noticed that the ampmeter wasn't indicating that it was charging the battery. It was holding steady just above the 0 mark, where it would be if I was cruising with a good battery. When I got back to my house, I started the car again, did fine. The next day, same problem, no power at all.
I'm figuring at this point that since it ran fine once started, that the battery is the problem. The only issue is that it's only a few months old. So is there any other way that the symptoms I describe (no power at all, runs fine after a jump, alternator not charging the battery) could happen?