Here a small problem I am facing with the same program from melabs.

I have 1 PIC that measures the voltage right. When I program a different PIC16F877A, the voltage seems to move around, especially when I remove the battery. It does not go to 0 volts right away. It floats around for a few minutes then goes to 0 then elsewhere.

I even tried reading of the PIC that work right and copying it to the new PIC and still does the same thing?

Any solutions?