Hey, I've recently got this issue with my car, I live in Ontario and winter just hit so the issue could be weather related. Early last week my battery light was coming on in the morning but shutting off by the end of the day, then it would stay on whenever I would drive, no matter how long I was driving. The car was acting normal with it on so I didn't think much of it, but then about mid week last week, I had let the car warm up for about 5 minutes before leaving for work, I noticed the radio had shut off by it self,(aftermarket radio) so I tried turning it back on and nothing, at first I figured the cold got to it, so I left for work anyways, as I was leaving the drive way, I noticed all the dash board lights were getting really dim, once I stepped on the gas, the car had barely any power, I kept going figuring I only had a 10 minute drive, about 5 minutes later, I hit a red light and boom, car died. Someone tried helping me boost the car but it didn't work. We eventually pushed the car to the side. Later that day I came back with a booster pack and the car started fine with it, drove it home with no problems. Charged the battery and started it up at home and while it was running, disconnected the positive on the battery to see if the alternator needed to be changed, but the car idled with just the alternator fine. So I replaced the battery with a brand new one and everything was fine up until this morning when the radio died and the lights dimmed out again. I didn't try to go to work with it like that again so I just shut it off. When I got home from work today, I started the car, ran fine for a few minutes, and I noticed right after the radio died this time, there was a whining noise, on and off, from behind the drivers side of the engine up until it eventually died about 3 minutes later.. sorry for the long story, trying to give you as much info about what happened.. any ideas anyone?