Battery

[Quevedo0]

My HP OmniBook 3 16-by0020ns, 16" 2K, AMD Ryzen™ 7 160, 24 GB RAM, 1 TB SSD, Radeon™ 680M, no operating system, no charger, with a 41 Wh battery, loses between 18% and 20% of its charge in 24 hours when completely powered off (Shift + Shut down, Fast Startup disabled, no peripherals connected, and all wake-up and USB charging options disabled in the BIOS). It has only 14 days of use.

What I have already checked:
- The powercfg /batteryreport shows the laptop in a Suspended state with no wake-ups in between, and powercfg /waketimers shows no timers.
- The HP PC Hardware Diagnostics battery test passes: status OK, 100% capacity (41.04 Wh) and 6 cycles.
- I have done a hard reset and updated Windows. The BIOS is already on the latest version available

[BeemerBiker]

PC's draw power even when turned off as explained here

Clicking on the windows 10 or 11 power 'Shut Down' should turn off the laptop.
If your laptop is unplugged and you find the battery has significantly drained overnight, one or move devices are drawing power. Windows allows some devices to continue to draw power as explained here. it is also possible that a Windows update replaced a device driver with one that is not power efficient.

Some devices that can cause to cause power drain:

USB hubs that can allow charging of devices
Thunderbolt port that can be used to dock with
The Intel Management Engine may tasks some device to maintain power.

Run the following command from the windows administrators command prompt

powercfg -devicequery wake_armed

for example the following devices are enabled even if the PC is turned off

They are all drawing power EVEN WHEN LAPTOP IS TURNED OFF.

You can disable these devices using the device manager as explained in step 1 here

If windows does not actually turn off then a few things to try as suggested by Microsoft


There is the remote possibility that windows is not actually shutting down. Usually a warning to that effect is shown on the screen but depending on the fault condition the display and keyboard may turn off first. When this happens, there is no obvious way to tell if Windows actually turned off the PC.

Spoiler

Try the following: Wait 10 minutes after clicking the shutdown button and then unplug the system. Then plug back in, turn it on and bring up the event viewer. Look in "system" for a message to the effect "the last shutdown was unexpected". It would be dated within a minute or two after you powered it up. if you see that type of message then windows did not shut down and you can try any of the above as suggested by Microsoft

Possibly windows is sleeping instead of being turned off.  See if any of the two tools below report problems.

Windows uses Modern Standby and has two tools to analyze sleep problems that can occur in modern standby.

Energy Report	A list of possible problems ranked as Errors, Warnings, or Informational
Sleep Study	The history of sleep going back several days

These report are obtained by using the Administrators command prompt.

Copy and paste the following 2 commands into the command prompt window for the energy report. There will be a default 60 second delay before the report is displayed.

powercfg /energy
.\energy-report.html

Note the number of errors and warnings.

Copy and paste the following 2 commands into the same window to get sleep history. Only the last 3 days will be examined unless you specify a duration on the command line.

powercfg /SleepStudy
.\SleepStudy-report.html

The last 3 days will be studies unless you specify a duration on the command line.

Let me know what you find out.

[Quevedo0]

When running powercfg -devicequery wake_armed, it returns 'NONE'. Additionally, the USB ports are disabled in the BIOS.
Both the Energy Report and Sleep Study show that the system shuts down completely with a charge, but when I turn it back on, it has lost between 15% and 20% of its battery without ever waking up.
I have already tried performing a hard reset by holding down the power button for one minute, and I also shut it down by holding the Shift key (to force a full shutdown), but it keeps losing charge while turned off. The last thing I did was let the battery drain to 0% and then charged it back up to 100% to calibrate it. I'm waiting to see if that fixes it, but I doubt it. It seems to be losing charge overnight due to a power leak or something similar.

[BeemerBiker]

Yea, seems to be a hardware problem.

See if the battery report shows anything suspicious.  Please post the summary.

Please run the battery report and post the summery if you want.

You run the battery report by bringing up the administrator command window and running

powercfg/batteryreport

as shown below

After entering that explorer line you should see something like the following. You will have to click on it as it is long
https://stateson.net/docs/SP4_battery-report.html
Battery should last about 5 years but less for gaming systems.

Have you done a battery calibration?
If not, then do the battery report both before and after the calibration.
Save the results so you can compare.

This link shows how to get warranty information.
Click here to read how to dispute a warranty.
Click here for: Rights in the EU.

Let me know what you find out.

[Quevedo0]

The last thing I did was let the battery drain to 0% and then charged it back up to 100% to calibrate it. I'm waiting to see if that fixes it, but I doubt it. It seems to be losing charge overnight due to a power leak or something similar.

[Quevedo0]

The battery have 9 cicles of charge so is new