Battery Drains Fast After Upgrading To Windows 8.1 RTM In Surface Pro

I read multiple threads in TechNet forum on this issue.Many users after upgrading to Windows 8.1 RTM are experiencing that  battery drains markedly faster than before given the same normal daily office use. According to one of the users -” If I unplug the Surface at full charge 100% and put it to sleep without touching it again, it will be fully drained to 0% in two days.  In Windows 8 this scenario would take the battery down to 90%.”

Possible resolution:-

It seems to be related to Power Management driver.I shall also suggest to update BIOS.Visit the websites of the manufacturers to download and install the latest firmwares.

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