Asus Laptop battery drains in 2 days even when switched off.

Asus Laptop battery drains in 2 days even when switched off. Checking after switch on, the system shows the screen is always on. I have tried the holding down the on/off switch for 15 seconds, but it doesn't seem to do anything. the battery still runs down to zero.

Is this an Asus issue of a windows 11 problem?

Any help would be welcome

Hi, mikefo, welcome to the ElevenForums

Sounds like you’ve been introduced to Windows 11 Modern Standby

Which model name and number of the ASUS Notebook? Does it have a removable battery or gel-pack battery?

antspants said:

Hi, mikefo, welcome to the ElevenForums

Sounds like you’ve been introduced to Windows 11 Modern Standby

Disable Modern Standby in Windows 10 and Windows 11 Tutorial

This tutorial will show you how to disable Modern Standby (S0 Low Power Idle) to enable S3 support on a Windows 10 and Windows 11 device. In Windows 10 and Windows 11, there are two power models for PCs: S3 and Modern Standby (S0 Low Power Idle). The S3 power model is an older standard and is...

www.elevenforum.com

Click to expand...

My ASUS has modern standby and does not drain like this.

Open the Control Panel to see what option your Power Button has when you press it.

I just checked and found out that my ASUS laptop power options were at the default settings where holding the power button down only puts it in sleep mode. I changed that to Shut down in the Control Panel.

You have several options for what your laptop does when you hold down the power button.

This happened twice, a few years ago, on my Dell XPS 9510. I was not happy because it immediately resulted in battery wear on a brand new laptop...over 10% lost. When Dell didn't say it met battery warranty criteria, I replaced the battery on my own. I disabled modern stand by and now manually put it in hibernation (not sleep) right before I close it to make sure it isn't discharging when not in use. So far, it's worked...ideally you should be able to close the lid and not worry about anything but I lost confidence and didn't want to take the risk of damaging machine (especially battery).

You’re not alone with battery drain when in modern standby.

Various other reasons also mentioned for drain in this thread


My wife’s Lenovo was losing considerable power also which I concluded was modern standby. It’s an annoying feature designed for impatient people IMO

And then, I've found that many people don't understand the proper way to Shut Down their PC's.

Some will just close the lid and walk away. While others till press the start button till the lights go out!
So Wrong, in so many ways.

Windows comes with it's own Shutdown.exe program, that when properly used, will shut down all running programs, close all open files and then turn off the power. So simple, yet beyond the comprehension of some.

I learned my own lesson many years ago, when the ATX computer motherboards and power supplies first hit the market.

The ATX power supply (in a desktop PC) never really shuts off, but still supplies voltage to the motherboard and the Power ON switch. Similarly, in a laptop, as long as the main battery is connected, there is power to the motherboard and the Power ON Switch.
Now, we just need for Windows to send the correct command to the Motherboard to get it to properly Shut Down.

I found that I can make a shortcut to "Shutdown.exe" and put that shortcut on either my desktop or my Task Bar, for a one Click Shutdown.

The proper syntax for that shortcut, in Windows 11, is:

%windir%\System32\shutdown.exe /s /t 1

Yes, there are three spaces in that command, don't forget them!

I've used that same command since Windows 8.1, on literally hundreds of PC, and Laptops.
It's the safest and fastest way to shut down Windows.

First, update your BIOS and drivers. On most laptops from Asus, this can normally be done via the MyASUS app. I have seen some reports that the driver versions that appear in this app are not always the latest ones, though. So, just to be sure, I suggest to visit the product page of your specific model (on Asus.com). You'll have to search for the correct model number that matches your specific Asus laptop. Navigate to the Support page from there, so that you can see all the various downloads that are available for your laptop. On my Asus TUF Gaming F16 (2024), the MyASUS app only shows System updates, and, other updates can be found via the cogwheel button in the Asus Armoury Crate app (but I don't know if your Asus laptop can support the Armoury Crate app so, you'll have to verify on that to find out what are the available options that apply to yours).

Secondly, enter your BIOS settings. On my laptop this can be done by pressing and holding down the F2 key during boot, before Windows starts up. (You do not have to repeatedly keep pressing the key...) In the BIOS, switch to Advanced mode (press F7). Next, navigate to the Advanced setting at the top. In the menu screen that appears, look for something like APM Configuration | ErP Ready ➜ change this setting to "Enabled(S5)". (On my Asus laptop it is simply ErP ➜ change it to "Enabled".) Save & Exit. Now, the laptop will no longer let you charge a phone or other device through the laptop's USB whenever the laptop is shut down. Otherwise, the USB ports continue to draw more power from the laptop even after the laptop is shut down. Not all laptops from Asus have an ErP option in BIOS, though, but if yours has, enabling it in this manner might help.

It should also be noted that some USB devices, like, e.g., a USB-to-Ethernet or USB-to-WiFi adapter, still continue to draw some power from the USB port after the computer is shut down. The same also holds true about onboard (built-in) network adapters. The power that a network adapter consumes after the computer is shut down can often be reduced to some degree by disabling Wake-On-LAN (WOL) on the network adapter. Unplugging those specific USB devices that continue to consume power after the computer is shut down could also help to further reduce the battery drain. Another thing that you could maybe also consider in addition to this is, disable network connectivity in Modern Standby.

Read up on hybrid sleep if you haven't already.

Thirdly, disable fast startup. Some people prefer to also disable hibernate. You can run the command powercfg h off to disable hibernate, powercfg h on to turn hibernate back on. When you disable hibernate, fast startup will also be disabled until you turn hibernate back on (excepting if you have disabled fast startup by following the tutorial, in which case turning hibernate back on will not turn fast startup back on). On some laptops, turning off hibernate can also help to remedy the problem of the battery draining abnormally fast after the laptop is shut down, but you'll have to experimement to find out if this also applies to yours, and, also be aware that choosing to disable hibernate (if it works for you without problems, that is... as a lot of computers tend to behave erratically after they wake from hibernate...) can have an adverse effect on battery life, e.g. if disabling hibernate forces you to, in lieu of hibernate, more frequently put the laptop to sleep (Modern Standby) for longer periods. (2023 or newer gaming series laptops from Asus, such as the one that I own, also have a feature in Armoury Crate, under Device, called Modern Standby Assistant, which automatically puts the laptop in hibernate if the laptop exceeds the power setting beyond a set period of time.) Also note, hybrid sleep doesn't work after hibernate has been disabled so, there's pros and there's cons to disabling hibernate.

my Asus ZenBook had a similar problem. and its battery was dead soon.
now it's powered up by its adapter any time. an option is to replace its dead battery.