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HP Zbook 15U G4 Battery drainage

HP Recommended
HP Zbook 15U G4
Microsoft Windows 10 (64-bit)


Not sure anyone else has experience the same problem with HP ZBook 15U G4 where the battery drains 15-20 % overnight while in shutdown. I have done the following steps already maybe there is something else i can try.

1:Replaced battert with Oem part.

2: Updated bios to version 01.31 Rev.A  - Released 8 Nov19.

3: Disable Fast startup.

4:Disabled CS in registery

5: Unticked the allow wake option in device manager Ïntel Management Engine.

6: Delete ACPI driver and reinstalled.

7: Reinstalled Wiindows OS and updated all driver again. 


I am completely lost on what next to try. 

Thanking you in advance .

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