Device ok - soon problems with battery

I bought the clock and it's great to be and everything worked.
But after about two months was the first time the "image path".
Result showing: The holder of the battery pushes it not strong enough so that when my clock was always the power off and so they had to use not good. I then beholen me with folded paper scraps in the housing, which increase the pressure, but then I have a new buy. This time, another Casio model that is experiencing this problem no longer arises.
So the clock itself is good and great, but my plane had this problem.