My Asus is less than 2 years old. It lithium baterry wear 50%. Some time up an down, around that number. I run Windows/Linux/Hackintosh and each Os see the battery differently. Windows have the longest run and measure accuracy. While in Osx or Linux I can run my pc up to 20 minute after the battery drop from 40% to 0% suddenly. I think Linux and OSx killing my battery. But I want to keep these 2 OSs. What special config and awareness do I have to make to reserve my battery and PC in over all. Also I seem Linux and Osx run quite heat. Lack fan control and speedstep control.