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Sleep mode is not working which drains battery

Mie 0 Reputation points
2025-10-24T18:01:39.14+00:00

Hello,

I have a Lenovo Thinkpad that is running Windows 11 Enterprise (24H2), and I have been noticing that the battery drains while my computer is supposedly in sleep mode. I now looked into the battery usage over the last 24 h and I can see that the computer drains from 100% to 14% within 4 hours after I put it in sleep mode.

However when I look at the time spent in sleep and with screen off, it seems the computer is turning on by itself though the lid is shut and it's unplugged from power. In the screenshot you can see that I have highlighted the 20:00h bin and within this hour the computer was only in sleep mode for 1 min and the screen was off for 25 min - I don't know what it was doing the remaining 34 min. You can also see that it is set to automatically go into sleep mode after 1 h (though I always manually put it in sleep mode and close the lid when I unplug it).

I even if it's on, I find it add that it drains so fast when it's not being used for anything, when the battery life should be at least 6-7 hours and the computer is less than a year.

I hope someone can help me resolve this.

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Windows for business | Windows 365 Enterprise
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  1. Jason Nguyen Tran 4,870 Reputation points Independent Advisor
    2025-10-24T18:44:25.6133333+00:00

    Hi Mie,

    Based on your battery usage chart, it seems that your Lenovo ThinkPad isn’t fully entering traditional sleep but instead switching to Modern Standby (S0 Low Power Idle), a newer sleep state introduced in recent Windows versions. In this mode, your device stays semi-active to maintain connectivity for background updates, sync tasks, or wake events, which can explain both the unexpected wake times and rapid battery drain.

    To confirm this, please open Command Prompt (Admin) and run:

    powercfg /a

    If you see “Standby (S0 Low Power Idle)”, your device is using Modern Standby. You can then check what’s waking it with:

    powercfg /lastwake
powercfg /requests
powercfg /devicequery wake_armed

    If certain devices or services (like network adapters, Bluetooth, or Windows Update) are triggering wake events, you can disable those individually. For example, in Device Manager, right-click your network adapter > Properties > Power Management tab > uncheck “Allow this device to wake the computer.”

    Additionally, navigate to Settings > Power & battery > Battery saver, and ensure it’s enabled at 30% or higher. You can also turn off “Allow wake timers” under Control Panel > Power Options > Advanced settings > Sleep. Lastly, check for BIOS updates via Lenovo Vantage. Some firmware revisions include fixes for Modern Standby battery drain.

    If you prefer traditional behavior, you can disable Modern Standby via Group Policy or registry, but please note this isn’t officially recommended on all devices.

    Try these steps and let me know if the drain improves and if this helps, please click “Accept answer” so others can benefit from it too 😊

    Jason,

  2. David T 0 Reputation points
    2025-12-08T02:16:40.1166667+00:00

    Windows 11 modern standby (s0 sleep) is horrible. It also keeps draining my battery while "asleep" and randomly waking up my laptop as I sleep at night due to high battery drain in it's broken sleep state (Asus vivobook with hx 370).

    Microsoft and laptop manufacturers have removed our options to sleep with real sleep (s3).

    They'll probably never fix it because Windows people don't care, so just use hibernate and keep complaining so that one day they'll actually listen and fix it.

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