I have a 97 chevy venture van, the battery will only stay charged for a few minutes. It wont take a jump and only stays charged when I take it to the auto parts store and then it stays charged for like 30-45 min.. and then it dies again. I have a new 104 amp alternator and my battery is 650 amp,and every time I take it to the auto parts store they say that either the voltage is low or it is the amps.. please help this is trying my husband crazy

 

Did you have a load test put on the battery to see if it is good? You also need to test the alternator to make sure it is charging. But it sounds like the battery.