Driving home from work last week i first noticed the fan speed for the AC was fluctuating a bit later the car felt like i was getting fuel cut, I then noticed all the gauges were dropping to levels at ignition off, the car began to basically stumble as if was going to stall. The cut happened regardless of gas pedal position. At first only the battery light came on, and then abs light. Barely made it home and i tried starting it later that day and battery was dead, I charged it and it started and i shut it off, 5 minutes later it was dead again so I am confident its the alternator but the symptoms or some of them make no sense. Now after i charged the battery again, i cant get it started and the alarm wont stfu so i pulled the horn fuse. The car wont even turn over now. I am going to replace the alternator but can anyone explain why the car acted like that and maybe other potential causes?