Windows 10: Poor battery life after KB4512508 windows 10 update

Hi all,


I am using a Microsoft surface pro 5 running Windows 10 1903 build 18362.295, updated on 28/8/2019 after receiving cumulative package KB4512508.

Before the update, my battery life typically lasts on the average 5 hours and above. However, immediately after the update, my battery life drops drastically to about 1.5 hours. I can see 1% of batter life reduction every 1 to 3 mins. However, there has been no change in usage pattern and also no specific applications or programs that show high CPU usage from the task manager. And this is not the Cortana high CPU usage issue which has wrecked havoc all over the world, I have paused the update of the package that would introduce this issue. Average CPU load has been hovering at about 10~12% (seems slightly higher than I could remember), the back of computer also appear slightly warmer than before the update.


Anybody out there face similar issue or know what is going on and how to fix this issue? Desperately need help and advice. Thank you.


Regards,

Entropy

:)

 

Poor battery life after Windows 10 Anniversary update

I would like to point out that while this is marked as an answer. It is not the solution for most devices with the problem of poor battery life.

The poor battery life (less than 4 hours compared with about 8 hours for a normal notebook) is mainly due to poor configuration of the update and many of the internal process run by windows 10 drain up battery even the computer is idle.

For JibranGillani's problem, the computer last less than one hours even when idle is clearly a problem and may really be related to the issue suggested by

Marc Cai. However, it is disappointing to see that Microsoft pick the easy one to solve instead of providing the solution to mass users even though the thread "Poor battery life after Windows 10 Anniversary update" has been there for more than two months.

It is hopeless to see that Microsoft has no response to the problem and restore to status before update seems to be the only option for ordinary users. It is more disappointing for the fact that the problem also impacts Microsoft own devices, surface, and
the battery life simply way off the claim on battery life found in marketing of the surface line products.

 

Poor battery life after Windows 10 Anniversary update

HP Elitepad 900 G1 - before the update the battery life was over 9 hrs, after the update it went down to 4 hrs.

Removing the update, bought back the 9 hrs running time.

***Post split by the moderator so others can easily search for the same concern.***

 

Lumia 900 Poor battery life

+1

Very poor battery life