[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)

    22.7%
  2. 20%

    18.2%
  3. 40%

    36.4%
  4. 50% +

    22.7%
  1. Che0063

    Che0063 Notebook Consultant

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    No. It depends on your own testing. Fast Boot is basically hibernate; you may run into issues if you don't reboot your system for a few weeks. If you like having a 'fresh' system on boot instead of a hibernated one, you can turn it off.

    if on HDD, leave it enabled, SSD, doesn't really matter (Shaves of 1-2seconds at most)
     
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  2. Vasudev

    Vasudev Notebook Nobel Laureate

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    I made some tweaking to default MSFT driver to get Samsung NVMe like performance but sadly it worked only for me. I get 12MB more write speed in real world apps.
     
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  3. paradigm

    paradigm Notebook Deity

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    Thanks to the OP this will be my project in 02 days (improving on my rb15 4.5 hours of battery life)
     
  4. nosauce

    nosauce Notebook Consultant

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    I did a clean Windows 10 Education install on my new laptop and I barely have any power options in the advanced settings. I ran this script and nothing changed. When I go to
    Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings
    There are a ton of nested subfolders and more subfolders. Can you please elaborate which files I need to change to 2?
     
  5. Che0063

    Che0063 Notebook Consultant

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    I have a SATA 128GB Teclast SSD connected via M.2 to my system and I cannot get lower than Package C2 state - m3-7Y30 is idling at 0.8-0.9W which is completely unacceptable.

    It came with the Microsoft Standard SATA ACHI Controller. I also tried the Intel SATA ACHI controller but it doesn't seem to be working.
    I have a fully unlocked BIOS and I have been fiddlinrg around but nothing I can do will let me go lower than C2 state. The intel datasheet indicates that this Y CPU supports all the way to package C10.

    These settings might not have much of an effect on battery life but you are welcome to try. I usually enable the attridutes to 2 for all of the processor settings.
     
  6. Vasudev

    Vasudev Notebook Nobel Laureate

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    How much watts is being pulled while in battery mode? Some drives go to low power when on battery and on AC power they stay at max performance.
     
    Last edited: Nov 27, 2018
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  7. Che0063

    Che0063 Notebook Consultant

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    3.3-3.8W on battery when idle. That's slightly lower than my previous i5 Xiaomi but that's probably because of my Teclasts' smaller display.

    I'm looking to reduce it to 2.7W on idle, which is reasonably because my friends' ASUS Transformer with the M5-5Y10c idles at 0.2W with a total drain of about 2.8-3W
     
  8. Vasudev

    Vasudev Notebook Nobel Laureate

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    Have you used speedshift only?
     
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  9. Che0063

    Che0063 Notebook Consultant

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    Just restarted my laptop and disabled speedshift in BIOS and unchecked SST in TS. No difference :(
     
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  10. Vasudev

    Vasudev Notebook Nobel Laureate

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    Did you un-hide power options?
     

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