11-03-2019 07:03 PM
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  1. GatsbyGlen's Avatar
    I have mine at 95, to keep it from going into turbo. 50 was too excessive for me, although it would be interesting to see how much more juice you could save :)
    11-27-2015 09:37 PM
  2. WildKarrde's Avatar
    I have mine at 95, to keep it from going into turbo. 50 was too excessive for me, although it would be interesting to see how much more juice you could save :)
    I have my SP4 set at 50% CPU, Max battery graphics, 15% display, and no battery saver except for in emergancies. My usage is heavy internet browsing with 8-10+++ tabs open in Google Chrome, Excel almost always open, a PDF almost always open, simple MS paint drawing, OneNote almost always open, Google Drive always running and I get roughly 7 hours battery life. 8 hours if I'm lucky. I never use sleep because the device starts so quickly anyway. I don't use hibernate anymore because WiFi almost never works after I start it back up (had same problem with my SP2.)

    With display at 25% and CPU able to scale up to 100% I could only get about 4.5 hours. I'm disappointed by that, but 50% CPU almost always is enough for me, even when using Solidworks 2015.
    11-27-2015 10:58 PM
  3. GSOgymrat's Avatar
    Out of curiosity I just completed an informal test. I charged my updated i5 SP4 to 100% and used it continuously until I got a warning at 4% that I needed to plug it in. The brightness was set to "suggested", Bluetooth and Wi-Fi were on with no special power management settings. I used Edge browser and went to numerous websites, watched videos on YouTube, checked email, used Citrix, read magazines and comics, downloaded a two apps, used the Microsoft News app, drew some pictures in Fresh Paint, checked Facebook... all things I typically do with SP4.

    Total time was 5 hours 20 minutes.

    The display driver restarted four times but otherwise there were no problems. I don't recall the fan ever being audible and the unit never felt hot. Battery life is not a priority for me because I don't normally use SP4 for extended periods of time without being near an electrical outlet. I just really wanted to know how long my SP4 would last doing typical tasks at typical settings.
    11-28-2015 03:07 AM
  4. Justinian84's Avatar
    This is appalling if true. Absolutely unacceptable.

    I get over 6 hours of constant use (Adobe CC apps, Onenote, web browsing) with 75%-100% brightness on my i5 SP3 without throttling anything.

    I really really hope this is purely a software issue on the SP4 and that Microsoft can fix it. If I were in your position and the battery is not fixed after a few more weeks, I would do a return. There is no way I would put up with inferior battery life on a newer generation product.
    11-28-2015 06:50 AM
  5. zkyevolved's Avatar
    In regards to the battery drain in standby, I chatted with Surface and I got this:
    snip_20151128175613.png
    Before this screen shot, he even went as far as to tell me that drain is expected with devices... I told him that my SP2 and SP3 don't have this drain...
    Sad... I might just return this if in a few weeks it isn't fixed.... There is no guarantee that it will be fixed, is there? I don't want my return period to run out ...
    11-28-2015 10:57 AM
  6. GatsbyGlen's Avatar
    Out of curiosity I just completed an informal test. I charged my updated i5 SP4 to 100% and used it continuously until I got a warning at 4% that I needed to plug it in. The brightness was set to "suggested", Bluetooth and Wi-Fi were on with no special power management settings. I used Edge browser and went to numerous websites, watched videos on YouTube, checked email, used Citrix, read magazines and comics, downloaded a two apps, used the Microsoft News app, drew some pictures in Fresh Paint, checked Facebook... all things I typically do with SP4.

    Total time was 5 hours 20 minutes.

    The display driver restarted four times but otherwise there were no problems. I don't recall the fan ever being audible and the unit never felt hot. Battery life is not a priority for me because I don't normally use SP4 for extended periods of time without being near an electrical outlet. I just really wanted to know how long my SP4 would last doing typical tasks at typical settings.
    Same here. Between 5 and 6 hours, almost every time. I think it's safe to say this the typical range for everyday use. The 9 hours claimed by Microsoft is for people who like to setup a video to loop and then stare at their screens for 9 hours doing nothing else :)
    TheCudder likes this.
    11-28-2015 12:07 PM
  7. GatsbyGlen's Avatar
    In regards to the battery drain in standby, I chatted with Surface and I got this:

    Before this screen shot, he even went as far as to tell me that drain is expected with devices... I told him that my SP2 and SP3 don't have this drain...
    Sad... I might just return this if in a few weeks it isn't fixed.... There is no guarantee that it will be fixed, is there? I don't want my return period to run out ...
    Look for PJLTEST on answers.microsoft. He/She said that a rep is aware of the problem, and is being addressed. Hopefully it's true.
    11-28-2015 12:12 PM
  8. snakebitten's Avatar
    I agree that the battery life on my SP4 i5 kinda sucks. I had to drop my CPU to 50%, my display to 15%, and my GPU to minimum performance to get even close to Microsofts claimed all-day battery life. Gaming between classes is a no/go without access to a wall plug. If it weren't for the Qi-Infinity 35000 mAh battery, I would have returned my SP4. I'd be an instant buyer if they released a good power cover for the SP4. I actually waited to buy an SP2 until the power cover was released, and skipped the SP3 because the Power Cover wasn't compatible. The SP4 was a big enough upgrade to coax me over anyway, but the battery life does suck. I need REAL all-day battery life, not theoretical all-day battery life.
    I decided since I'm consistently toting around a bag of tablets and smartphones and gadgets, that one of those fancy external batteries was a good insurance policy. And that Qi-Infinity setup supports everything under the sun, including making the Apple fans happy.

    Got it yesterday. Let my SP4 drop to 10% (took about 7 hours of use with current power plan) Plugged in the QI and the SP reached 100% charge with Qi still having 55% left. Impressive! This ends my battery concerns for the SP2, SP4, L1520, and the new L950XL. I'm on the grid even when away from the grid. :)

    Thanks for the suggestion.
    WildKarrde likes this.
    11-28-2015 09:46 PM
  9. zkyevolved's Avatar
    Did it work for you?
    You my friend are a life saver. Check out these nov-29th-sleep-study.jpg

    My battery drain is to a minimum, after using your driver for this Surface Pro 4 at least. It wakes INSTANTLY and it works very well. Thank you, friend. :)
    Last edited by zkyevolved; 11-29-2015 at 01:18 PM.
    GatsbyGlen likes this.
    11-29-2015 11:18 AM
  10. mattwilson87's Avatar
    Sorry, but can you clarify what it is you did to improve your battery drain?
    11-29-2015 01:09 PM
  11. zkyevolved's Avatar
    I changed my graphics card driver to the September one uploaded from a very kind member here, here is link to his post.
    http://forums.windowscentral.com/mic...tm#post3311851
    11-29-2015 01:19 PM
  12. GatsbyGlen's Avatar
    You my friend are a life saver. Check out these

    My battery drain is to a minimum, after using your driver for this Surface Pro 4 at least. It wakes INSTANTLY and it works very well. Thank you, friend. :)
    That's consistent with what I see, roughly 1.5% per hour or around 550 mW per hour. I sure hope this is just a software issue (a combination of driver and Win 10 updates) which causes the problem. Hopefully Microsoft provides a more permanent fix soon.
    11-29-2015 03:37 PM
  13. zkyevolved's Avatar
    That's consistent with what I see, roughly 1.5% per hour or around 550 mW per hour. I sure hope this is just a software issue (a combination of driver and Win 10 updates) which causes the problem. Hopefully Microsoft provides a more permanent fix soon.
    To go from 4% --> 1.5% is clearly software. Otherwise it would still be at 4%, don't you think? A bad transistor or battery or connection here or there will always be present, regardless of the software fix.
    11-30-2015 12:57 AM
  14. Grimmric's Avatar
    To go from 4% --> 1.5% is clearly software. Otherwise it would still be at 4%, don't you think? A bad transistor or battery or connection here or there will always be present, regardless of the software fix.
    I thought i didnt have any problems with my SP4 but i have found two.
    I cant create recovery disk, is my first problem.
    Then i tried to put it in sleep mode for the night to see the drain.
    When i tried to wake it up the screen doesnt come on. Its black.
    So i had to do a long press on the power button and restart it
    And i noticed that the drain was 46% on a 6 hour sleep.
    How do i install the drivers you mentioned?
    I have the file, but doesnt know which file to press :)
    11-30-2015 01:17 AM
  15. zkyevolved's Avatar
    I thought i didnt have any problems with my SP4 but i have found two.
    I cant create recovery disk, is my first problem.
    Then i tried to put it in sleep mode for the night to see the drain.
    When i tried to wake it up the screen doesnt come on. Its black.
    So i had to do a long press on the power button and restart it
    And i noticed that the drain was 46% on a 6 hour sleep.
    How do i install the drivers you mentioned?
    I have the file, but doesn't know which file to press :)

    Right click the windows menu and click Device Manager
    Expand Display Adapters
    Right click Intel HD Graphics 520
    Update
    Click "browse my computer for driver software"
    Click "let me pick from a list of device drivers on my computer"
    Click Have disk
    Click browse
    Locate the folder, and use the files there and select the driver you'd like to use.
    It'll take a little to update the driver, and then the screen will turn off and on a time or two. My person devices needed a restart so the touch screen would work correctly again, or the pen. Both devices had different reactions to the driver changes, but a reboot always fixed the issue.

    Start at 4:44
    This is what you need to be doing.

    Hopefully this helped.
    Grimmric likes this.
    11-30-2015 01:22 AM
  16. GatsbyGlen's Avatar
    To go from 4% --> 1.5% is clearly software. Otherwise it would still be at 4%, don't you think? A bad transistor or battery or connection here or there will always be present, regardless of the software fix.
    Agreed
    11-30-2015 06:40 AM
  17. neo158's Avatar
    I thought i didnt have any problems with my SP4 but i have found two.
    I cant create recovery disk, is my first problem.
    Then i tried to put it in sleep mode for the night to see the drain.
    When i tried to wake it up the screen doesnt come on. Its black.
    So i had to do a long press on the power button and restart it
    And i noticed that the drain was 46% on a 6 hour sleep.
    How do i install the drivers you mentioned?
    I have the file, but doesnt know which file to press :)
    Windows 10 does away with the recovery partition, you need to go into control panel and search for recovery and it should be the first option, when the wizard opens make sure the "Copy system files option" is checked, pick a drive and that's it, you then have your recovery media.
    11-30-2015 07:49 AM
  18. Grimmric's Avatar
    Windows 10 does away with the recovery partition, you need to go into control panel and search for recovery and it should be the first option, when the wizard opens make sure the "Copy system files option" is checked, pick a drive and that's it, you then have your recovery media.
    This is my problem. I do all the things you say and have done it atleast 10 times, but with the same result.
    I get an error message that say plainly that i couldnt create recovery disk.
    No numbers or anything. Just a "sorry" and thats it.
    I updated with the intel driver and tried it again with the same result.
    Any more suggestions would be appreciated.
    11-30-2015 08:54 AM
  19. Grimmric's Avatar
    @zkyevolved @GatsbyGlen
    Thank you very much.
    Everybody that experience drain when sleeping should install this Intel file.
    I went from 46% in 6 hour in sleep mode to 8% in 5 hours. Its a huge difference.
    And before installing file when i tried to wake it up i had to press power button 30 sek for a soft restart.
    Now it wakes upp directly. Thank you again.

    I called MS about me not being able to create recovery media.
    They said its the same as the file i get from their homepage.
    Hopefully its true.
    11-30-2015 09:13 AM
  20. zkyevolved's Avatar
    @zkyevolved @GatsbyGlen
    Thank you very much.
    Everybody that experience drain when sleeping should install this Intel file.
    I went from 46% in 6 hour in sleep mode to 8% in 5 hours. Its a huge difference.
    And before installing file when i tried to wake it up i had to press power button 30 sek for a soft restart.
    Now it wakes upp directly. Thank you again.

    I called MS about me not being able to create recovery media.
    They said its the same as the file i get from their homepage.
    Hopefully its true.
    I've used that file to flash both my Sp4, since then, it's better. I'd recommend it and keep it safe. :)
    Grimmric likes this.
    11-30-2015 09:54 AM
  21. neo158's Avatar
    This is my problem. I do all the things you say and have done it atleast 10 times, but with the same result.
    I get an error message that say plainly that i couldnt create recovery disk.
    No numbers or anything. Just a "sorry" and thats it.
    I updated with the intel driver and tried it again with the same result.
    Any more suggestions would be appreciated.
    What drive did you choose as it must be an external disk?
    11-30-2015 02:25 PM
  22. Grimmric's Avatar
    What drive did you choose as it must be an external disk?
    I used a SanDisk Ultra USB 3.0 32GB.
    11-30-2015 02:36 PM
  23. neo158's Avatar
    I used a SanDisk Ultra USB 3.0 32GB.
    Is it formatted as FAT32 as that is one of the requirements?
    11-30-2015 02:39 PM
  24. Grimmric's Avatar
    Yes. I have done it with FAT32. And i did a full format of the usb and not just a quick one.
    I wonder if i should try with a smaller usb (16GB or 8GB) and maybe with an older 2.0
    11-30-2015 02:56 PM
  25. tbears99's Avatar
    Is this driver update necessary with the I7 graphics card?
    11-30-2015 05:33 PM
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