My laptop battery always charges to about
87%. Once it reaches a charge level in that range, it stops charging, but Windows says it is "plugged in and charging". Because it has not reached 100%, it keeps trying to charge the battery, but instead of charging it gets very hot. It causes CPU temperatures of about
51°C (normal temperatures range from
35°C when idle, to
43°C when running an IDE and a compiler).
The machine is an HP Pavilion dv7-6157cl running Windows 7. I have set the fan in the BIOS to run continuously, and it is always on a table or some surface which allows plenty of airflow to the vents on the bottom.
I have reinstalled the battery drivers and updated all of the other drivers. Nothing seems to help. I have also tried calibrating the battery. I also tried changing several power settings. The problem persists.
However, it works correctly as long as the charge does not exceed
What might be causing the problem? Is there a way I can get Windows to stop charging the battery at about
80%? Should I get a new battery?