Changed the battery now my car has trouble in stop lights

What is your question?

We just recently changed the battery and everything works its just that when i stop in a stop light or stop sign my car turns off i just need to put it on neutral and turn it back on it is a 2002 bmw 540 i What seems to make the problem better or worse? It stops when i am on a light or stop sign How long have you had this problem? Just now