[Guide] Improving Battery Life on Windows [+Enabling Deeper C States]

Discussion in 'Windows OS and Software' started by Che0063, Apr 14, 2018.

?

What was your increase in battery life after following this guide?

  1. None (decreased)

    30.0%
  2. 20%

    10.0%
  3. 40%

    50.0%
  4. 50% +

    10.0%
  1. Jarip

    Jarip Notebook Enthusiast

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    Che0063, thanks for a great guide. Yes, it made a clear improvement for a battery life of my laptop (over 50 %). Thanks.
     
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  2. Maleko48

    Maleko48 Notebook Evangelist

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    @Vasudev is there a way to translate this thread to my Linux Ubuntu install so it gets better battery life too?
     
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  3. Vasudev

    Vasudev Notebook Prophet

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    Firstly, migrate/upgrade to 4.13 kernel on LTS version of Linux, secondly install TLP. Reboot and install Powertop.
    Open a terminal, type
    Code:
    sudo powertop --calibrate
    Run that code separately on AC power and DC power to get optimal performance and battery life.
    BTW, I got Linux kernel 4.15 on Xubuntu 16.04 and am using linux firmware deb file from here https://launchpad.net/ubuntu/+archive/primary/+files/linux-firmware_1.173_all.deb
     
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  4. JRE84

    JRE84 Notebook Evangelist

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    anomaly post

    something that deviates from what is standard, normal, or expected.
     
    Last edited: May 2, 2018
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  5. Maleko48

    Maleko48 Notebook Evangelist

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    Heeeeeellllllllll no! 59Hz is bad enough. Besides isn't that what self refresh is for?
     
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  6. Vasudev

    Vasudev Notebook Prophet

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    I'm running at 75Hz w/o any reduction in battery life at all.
     
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  7. JRE84

    JRE84 Notebook Evangelist

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    well lighting pixels drains battery life.
    lighting them half as fast improves battery life hence
    my ux 330 gained 2 hours, but it lasts over 12 hours....

    so yeah it might not improve it much if your lifespan is 2hours.


    edit so i just cross checked my own decent suggestion...

    looks like the only way to tell is with battery bar pro and the like

    i just did i quick test and the draw was a minimal change, could have been a coincidence i was getting 2 hours more...or well not sure....batterybar pro shows on average 2000mv less when idle...during usage its around 10mv less.



    so if your idling your laptop alot its a good suggestion, and if you plan on actually using it im sorry and retract
     
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  8. ha1o2surfer

    ha1o2surfer Notebook Evangelist

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    Panel Self Refresh is really made to reduce power consumption on the computing side of the equation not really the display side per say. Now a great side effect is the display using less power but not nearly as much as if you just reduced the backlight.
     
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  9. Radixtrator

    Radixtrator Newbie

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    Ok so ive tried about everything in your guide but my XPS 13 9370 (i5) just will not go above C2 states. I tried Driver Booster to update all the drivers, set the AHCI to lowest, used throttlestop with SpeedShift (180), the whole nine yards..
    But no matter what, I have a package of over 80% on C2 and never above it.. Any idea? I havent found a solution on the forum in any of the XPS threads yet..
     
  10. GTMoraes

    GTMoraes Notebook Consultant

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    Two Three Couple of things I'd like to note here:

    1 - Not sure whether disabling some of the "eye-candy" would bring advantages. Most notably the "Show window content when dragging". I find this one in particular to be very useful, and unless you're dragging windows 24/7, it won't make a noticeable hit on battery life. Maybe a couple of milisseconds at most?
    2 - Disabling Touch Keyboard services broke typing on Edge. That's weird. Maybe UWP use that service
    3 - Turbo boost has one nifty feature, other than "free overclocking": It puts the processor in a very speedy state, in order to finish a task quickly, then return ASAP to idle mode. IIRC, there has been some papers that proved that short bursts of high speed, high consumption beats low speed, low consumption on battery life and long term energy consumption. I'm not sure whether disabling it would be good for battery life.
    4 - The battery serves as a filter for current peaks and noises. The PSU does a great job at that, but these systems are designed with a battery in mind! I'd strongly recommend to NOT remove the battery, even if it's dead!

    Also, I envy whoever can have a C0% state lower than 10%. All my computers float that value between 8 and 15% randomly, for no apparent reason. PKG Power never drops below 3W
    [​IMG]


    I've never managed to get it low nor my Y50, neither on this Ideapad 320.
    Maybe it's the default Windows Update drivers, who knows. I'll try updating them all and see what happens

    My battery life range between 3~3:30hrs with this laptop, with light use. Doesn't help to have a puny 30Wh battery.
    I've done most of your tips, let's see if it improves something.
     
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