The tool can highlight sources of battery drain during your devices sleep mode.



From Hexus:

Microsoft has built a new tool to help users of Windows 8.1 devices determine the causes of battery drain during the system's sleep mode. Kevin Chin, writing on the Windows Blog, explains that the 'Sleep Study' tool is particularly useful, as while your system is sleeping you can't otherwise easily monitor hardware and processes causing a battery drain.

First of all it's worth pointing out that the new tool will only work with systems which support InstantGo. Such systems offer a tight integration of SoC hardware and software to provide a very fast wake-up, connected, instant-on experience and should offer sleep modes which have little impact on your battery.

Sleep Study will tell you which apps and devices are using your computer resources during a sleep session. When installed the tool logs any sleep sessions over 10 minutes long and provides a colour-coded, depending upon power-consumption, report. In the report apps, devices and services with higher power consumption are highlighted in red or orange.

  Microsoft Sleep Study: a tool for Windows 8.1 battery use analysis