I recently updated my Latitude E5430 to Windows 10.  It went quite smoothly and except for needing a Hotfix for my Nuance PowerMic II every thing worked.  I have since noticed that my battery life has plummeted.  I used to be able to work all morning on the battery, plug it in at lunch and then all afternoon.  Now my battery is draining to 7% by mid-morning.  I've toned down the screed brightness, updated all the drivers and BIOS on the Dell website but nothing has helped.  I note that when I unplug the power cord the screen visibly blanks for a second before coming back on (it never did that before).  Does anyone have any thoughts.  I'm already using the extended battery.  Thanks