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A solution to poor battery life and connected stand-by battery drain


Next, went into device manager and disabled the Marvell AVASTAR Bluetooth Radio Adapter. Did another sleep + Sleep Study and this was still fixing the battery drain issue. Tested the Surface pro pen and it still worked.

The writing part of the pen doesn't use Bluetooth. The purple button at the top uses Bluetooth.
Does the purple button still work?


Well-Known Member
That doesn't even sound like a good idea much less a solution. You would save time and effort just turning it off. ;)