So i was driving today, when my battery light came on for a split second. Then it came on again for one second, then it cam on and the car cut off. I jumped the car off, and drove it to autozone to get checked. While driving the gauges did not work, and it did alot of sputtering. Finally it died right in front of Autozone. Now, i had the alternator replaced about 6 months ago, but didn't replace the battery. What could it be? Battery or alternator. They put the jump pack up to it for maybe a minute, took it offf, and the car ran for about a minute then quit, so they couldn't check the alternator. Help