Battery charge 255%

[Ilya98]

Hi, my battery shows 255% available (mains power). I put a new battery and power cable. It did not help.

[Raj2111]

Hi @Ilya98 

Welcome to the HP support community.
 

I understand you're experiencing an issue with your HP device, and I apologize for any inconvenience this may have caused. I'm here to help you today.

Here are a few troubleshooting steps you can follow to resolve the issue:

1. Perform a Power Reset

Sometimes, a simple reset of the power cycle can clear issues with incorrect battery readings.

• Turn off the laptop.
• Unplug the power cable and remove the battery (if possible).
• Hold the power button for 30 seconds to drain any residual power from the system.
• Reinsert the battery and reconnect the power cable.
• Power on the laptop and check if the battery issue persists.

2. Check Battery Health in Windows

• Press Windows + X and select Command Prompt (Admin) or Windows PowerShell (Admin).
• Type the following command and press Enter:
• This will generate a battery report and save it as an HTML file. The file is usually saved to your user folder (C:\Users\[YourUsername]).
• Open the file and look for information on battery health, charge capacity, and any discrepancies that might indicate a problem.

3. Update Battery Drivers

• Right-click on the Start menu and select Device Manager.
• Expand the Batteries section and right-click on Microsoft ACPI-Compliant Control Method Battery.
• Choose Update Driver and select Search automatically for updated driver software.
• If an update is found, follow the on-screen instructions to install it, then restart the laptop.

4. Update BIOS/UEFI

• Visit the HP Support page and search for your laptop model (OMEN by HP Laptop 16-c0040ur).
• Check for any BIOS updates available for your specific model.
• If an update is available, carefully follow the instructions on HP’s website to update the BIOS.

5. Check for Windows Updates

• Open Settings > Windows Update > Check for updates.
• Install any available updates and restart your laptop.

6. Battery Calibration

• Discharge the battery completely (let it drain to 0% if possible), then fully charge it back to 100%.
• This may help recalibrate the battery and ensure the system can properly detect the charge.

7. Test with HP Support Assistant

• Download and install the HP Support Assistant (if it’s not already installed).
• Open the app and go to the Diagnostics section.
• Run a Battery Test to check if there are any hardware-related issues with the battery or power supply.

8. Check the Power Adapter and Battery.

• Test the new battery on another HP laptop to ensure it's functioning properly.
• If available, try using a different HP power adapter to rule out issues with the power supply.

I hope this helps! Keep me posted.

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

-Regards
Raj-HP Support