Battery drain overnight while shutdown

Anonymous
2019-08-17T15:39:13+00:00

Lately, after I shutdown (full shutdown, not sleep or hibernate) my fully charged Surface Laptop 2 at night, I turn it on in the morning and find that the battery has lost around 25% power overnight! What's going on and how can I fix this? 

The laptop is only about 6 months old and the battery seems to be in good health. 

I've reported this on the MS Feedback Hub. Please upvote it so that it gains attention: https://aka.ms/AA5w24b

Also be sure to report there as well if you are experiencing this issue.

Surface | Surface Laptop | Power and battery

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Barb Bowman 80,805 Reputation points MVP Volunteer Moderator
2019-10-11T17:10:26+00:00

Please see https://support.microsoft.com/en-us/help/4469839/surface-laptop-2-update-history

This should be available on Windows Update:

October 10 release

The following updates are available for all Surface Laptop 2 devices running Windows 10 April 2018 Update, version 1803 or greater:

Windows Update History Name Device Manager Name
Surface – Firmware – 145.501.139.0 Surface System Aggregator– Firmware<br><br><ul><br><li><span>145.501.139.0 helps improve battery life.</span></li></ul>

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  1. Anonymous
    2019-09-27T13:19:56+00:00

    I was willing to try, just to help solve the problem: you did fine to suggest me those tests! Now, I am convinced that the problem is the firmware released in August (which contains Surface Embedded Controller Firmware - Firmware 103.2614.257.0) that has been released to improve battery performance and that, however, has caused battery draining on Surface series. Among the various attempts, I also carried out the rollback to the previous driver of the Surface Embedded Controller Firmware, but it did not improve the battery life: I believe that the Surface Embedded Controller Firmware is "governed" by the "main UEFI firmware" and, therefore, if we  will not get new UEFI firmware update, we  will obtain none good result. In one hour, my battery arrive to 10% from 100% of charge: it is an unacceptable condition for use! I also tried to disable SMT, but in my Surface Pro 4 it does not improve battery life, I think it is necessary to wait for an update fix from MS.

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  2. Anonymous
    2019-09-27T13:48:19+00:00

    I was willing to try, just to help solve the problem: you did fine to suggest me those tests! Now, I am convinced that the problem is the firmware released in August (which contains Surface Embedded Controller Firmware - Firmware 103.2614.257.0) that has been released to improve battery performance and that, however, has caused battery draining on Surface series. Among the various attempts, I also carried out the rollback to the previous driver of the Surface Embedded Controller Firmware, but it did not improve the battery life: I believe that the Surface Embedded Controller Firmware is "governed" by the "main UEFI firmware" and, therefore, if we  will not get new UEFI firmware update, we  will obtain none good result. In one hour, my battery arrive to 10% from 100% of charge: it is an unacceptable condition for use! I also tried to disable SMT, but in my Surface Pro 4 it does not improve battery life, I think it is necessary to wait for an update fix from MS.

    When you had turn off SMT did you let the battery drain to zero or 4% reserved (Surface turn off by it self) and then charge your battery to 100% / full if not you need to do so, turning off SMT and without re-calibration will not result in instant results.

    NOTE: YES THE FIRMWARE is the software that controls the Surface Embedded Controller for further hardware support.  Image a Surface without an OS with out Firmware.  Firmware (Software to control and support hardware ----> UEFI (Further supports the boot process / process chain) --> OS BOOT.

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  3. Anonymous
    2019-09-27T14:05:54+00:00

    Here is the current state of my own personal Machine:  I will give and show you guys a full update by end of day.  Keep posted. 

    NOTE:  This has been tested for about 2 weeks now on other machines, ranging from SP3, SP4, SP5, SP6, SL1, SL2 & also SB1, SB2

    1. SMT = Disabled
    2. Best Performance 

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  4. Barb Bowman 80,805 Reputation points MVP Volunteer Moderator
    2019-09-27T14:16:24+00:00

    There are several battery issues. This thread started as one about Surface
    Laptop  2 and was initially about SL2's (and expanded to other devices that
    turned out to be impacted like SP6, etc.) showing a 100-75% (25% drop
    overnight). For those folks, this seemed to commence when they installed
    firmware labeled "improves battery performance".

    For SP4 specifically, there are several threads about battery drain overnight,
    going back at least a couple of years. So they can't all be related to the
    recent firmware release. To me that suggests different causes. Whether a single
    fix or work around will remedy all of these cases is unknown.

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