[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)

    23.8%
  2. 20%

    19.0%
  3. 40%

    38.1%
  4. 50% +

    19.0%
  1. respecz10378

    respecz10378 Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    2
    Trophy Points:
    6
    Thanks for this post

    My laptop first idled 15-20W, and now is consistently 3-4W. It also can reach C8 state, where beforehand it couldn't get any further than C3.
    Battery life increased from 3 hrs to 8+ hrs.
    Unfortunately, updating the drivers didn't seem to work. So I just used the built in windows reset option, and this fixed the issue somehow.
    I think a windows update caused it to get stuck in C3.
     
    Che0063 and Maleko48 like this.
  2. Che0063

    Che0063 Notebook Consultant

    Reputations:
    221
    Messages:
    286
    Likes Received:
    373
    Trophy Points:
    76
    New discoveries - some poorly-optimized drivers can be the cause of even more battery woes. I thought I got my package C states down well, but apparently not. My Goodix Fingerprint driver, as well as the Axes Accelerometer caused C0% to be 0.5% higher, and causing a system-wide 0.2-0.5W increase in idle power.

    C state heaven: C state 2.jpg
     
  3. Maleko48

    Maleko48 Notebook Evangelist

    Reputations:
    185
    Messages:
    673
    Likes Received:
    503
    Trophy Points:
    106
    Did you disable/remove them or just update the drivers?
     
  4. Che0063

    Che0063 Notebook Consultant

    Reputations:
    221
    Messages:
    286
    Likes Received:
    373
    Trophy Points:
    76
    Just disabled. There are no available driver updates. My theory si that, by disabling the drivers, the CPU is no longer trying to communicate with the device and wasting CPU cycles.
     
    Vasudev likes this.
  5. Simon787

    Simon787 Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    5
    Thanks for the Guide!

    I have an Ideapad 330S and I've been struggling with getting good C-states on it. I got it into C3 which is 0.2W lower than stock C2 but it still draws 1 Watt at idle. It does go into C8 no problem (0.3 W) after disabling the Wifi adapter in device manager. This Laptop came with a Qualcomm QCA9377 which I have since replaced with an Intel AX200 but that didn't fix the problem.

    Please help me... I tried everything from updating drivers to fiddling with services.
     

Share This Page