99 Ford Escort Battery Light

You guys were totally correct!! I went to AutoZone and had the test done yesterday on the car. The guy said everything was good to go. My Misses go to work today and the car stops in the parking lot.
I went to take a look it, and it started right up. I turned the car off, and tried to start the car again, ‘nothing.’
I had to use booster/jumper cable to get the car started, however it won’t go anywhere, when you put it into drive, because the car dies/stalls.
I don’t what the guy at AutoZone was looking at, because he misread the reading badly. Is this normal, or did I just get a guy that didn’t know what he was doing.