Windows 8 Build 8102 Can Keep Consuming Battery When Switching from Sleep to Hibernation
In certain scenarios, early adopters testing the Windows Developer Preview can find that their devices have drained the battery even if they put Windows 8 Build 8102 Milestone 3 (M3) to sleep.
Microsoft has confirmed an issue with Windows 8 Developer Preview in which the operating system keeps on consuming battery power despite testers putting their devices to sleep.
While some early adopters running the Windows 8 Developer Preview might experience this issue, not all testers can come across it.
Windows 8 Build 8102 Can Keep Consuming Battery When Switching from Sleep to Hibernation - Softpedia