My alternator and battery is brand new but the hand runs great for a while and battery dies and the alternator has be tested 3 times and it WANT run whe I do take of the battery terminal it's like alternator is not working please help me

 

Sounds like your car is running off the battery and the alternator isn't keeping it charged? So when the battery drains the engine won't run?

What's the result of testing the alternator 3 times? Does it test good on the bench? Or was it tested in the car?

How about flaky connections at all ends of all the battery cables? Good connection at the big (+) wire at the alternator?