15-db1252ng notebook nvme slow in battery mode, with power supply unit its fast

[krazykenny]

hello,

I have a 15-db1252ng with 512GB nvme sdd, with power supply unit plugged in, the nvme is fast 1400MB/s

If I unplug it and use just the battery the nvme speeds down to 300-400MB/s thats very annoying, cause everything is so slow compared to when the power supply unit is pluggin in.

I have read from other users with same problem, but no one knows a solution.

so why does HP limit the nvme speed in battery mode ?

can we get a bios update that fixes that ?

[A_Gayathri]

Hi @krazykenny ,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand the issue you're experiencing with your HP Notebook - 15-db1252ng, where the NVMe SSD speed decreases significantly when running on battery, is related to the power management settings in the BIOS and the operating system. This is a common behavior in many laptops to conserve battery life.

Here are some steps you can take to address this issue:

Adjust Power Plan Settings in Windows:

• Go to Control Panel > Hardware and Sound > Power Options.
• Select your active power plan and click on Change plan settings.
• Click on Change advanced power settings.
• Expand the PCI Express section and then Link State Power Management.
• Set it to Off for both On battery and Plugged in.

Check BIOS/UEFI Settings:

• Restart your laptop and enter the BIOS/UEFI settings (usually by pressing Esc, F2, F10, or Del during startup).
• Look for power management settings related to performance on the battery.
• Disable any power-saving features that might be affecting the SSD speed.

Update BIOS:

• Check if there's a BIOS update available for your laptop model that might address this issue.
• You can check the HP support website for your specific model here.
• Follow the instructions to download and install the latest BIOS update.

Performance Mode:

• Some laptops have a performance mode that can be toggled using specific key combinations (e.g., Fn + Q) or through the HP utility software.
• Ensure your laptop is set to performance mode for maximum speed even when on battery.

Refer to this document: HP Notebook - 15-db1252ng User manual

I hope this helps. 

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. 

[krazykenny]

yeah I already tried every setting in windows, every power/energie option, nothing works.

(all what you descriped)

and the bios does not have any power/energy settings.

so it is impossible to use full nvme speed in battery mode., I have checked again, its only about 300MB/s read in battery mode.

[A_Gayathri]

Hi @krazykenny,

Thank you for your response, I appreciate your efforts. As the issue persists, I am sorry to hear that I'm sending out a private message to assist you with the next course of action. 

Please check your Private message icon on the upper right corner of your HP Community profile Next, to your profile Name, you should see a little blue envelope, please click on it or simply click on this link.

I hope this helps! Keep me posted for further assistance.

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!