Issue laptop Acer A514-54 battery drained when sleeping and hibernating

congminh1709
congminh1709 Member Posts: 6

Tinkerer

edited October 2021 in Aspire Laptops
Issue laptop Acer A514-54 battery drained when sleeping and hibernating
Windows 10 Version 10.0.19043.1237

I used powercfg to investigate and found some infos below

- powercfg energy: 2 errors

USB Suspend:USB Device not Entering Selective Suspend
CPU Utilization:Processor utilization is high


- powercfg batteryreport: battery drained when sleeping and hibernating


- powercfg sleepstudy: SoC Subsystems -> NoHwDrips.C10 -> NoHwDrips.C10.Unknown active time 77%




Do you have any supports for this case? Thank you.

Answers

  • JackE
    JackE ACE Posts: 45,080 Trailblazer
    This is normal. Battery must drain during sleep mode to keep RAM memory modules charged. Otherwise they lose memory. The same thing happens if you keep Windows in fast boot mode. The RAM memory modules are kept partially charged by the battery so they don't have to be reloaded with boot files from the boot drive. This speeds up the boot process but also drains the battery even when Windows is shut down.

    Jack E/NJ

  • congminh1709
    congminh1709 Member Posts: 6

    Tinkerer

    edited October 2021
    JackE said:
    This is normal. Battery must drain during sleep mode to keep RAM memory modules charged. Otherwise they lose memory. The same thing happens if you keep Windows in fast boot mode. The RAM memory modules are kept partially charged by the battery so they don't have to be reloaded with boot files from the boot drive. This speeds up the boot process but also drains the battery even when Windows is shut down.

    Yes, battery drained (not so quickly) when sleeping is acceptable.
    But how about hibernate? This mode can't drain battery as sleep. Because hibernation is basically shutting down the computer after saving the ram state to hdd.

    And I also disabled fast boot function already.
  • congminh1709
    congminh1709 Member Posts: 6

    Tinkerer

    powercfg batteryreport said that my battery lost 8% for 13.5h in hibernated
  • JackE
    JackE ACE Posts: 45,080 Trailblazer
    Windows power management still has bugs especially with hibernate. Avoid manually setting hibernate as there is little good reason to do so. Hibernate is mainly used by the system automatically when battery is inadvertently allowed to drain below a critical low state of about 7%. Control Panel's power button app should be set to sleep modes only on battery and plugged in, none to hibernate to avoid problems.

    Jack E/NJ

  • congminh1709
    congminh1709 Member Posts: 6

    Tinkerer

    Hi all.

    I have updated to Windows 11 and battery drained issue when hibernating is gone.
    Anyone who has same issue with me can try. Hope this helps.

  • JackE
    JackE ACE Posts: 45,080 Trailblazer
    Congrats on your update. :)

    Jack E/NJ

  • Easwar
    Easwar Member Posts: 6,727 Guru
    congminh1709,

    Good to know thanks for your information. It will be useful for many people. ​