I don't know for sure..but it could be a bad board..there is a board..for the life of me I can't think of what it's called...that controls the battery. It controls how the electricity is sent in, or recharged.. as well as the monitor. The only problem with this is that these boards aren't easy to replace nor are they cheap. Try finding another battery to try. If it works then it was the battery. If it doesn't fix it then you have a bad board. sorry
Shadows