Bad battery life on OMEN 15

[JimGr0]

So I got an Omen 15 laptop about a month ago, for which HP claimed it could reach 6 hours and 15 minutes of mixed usage. The issue here is that even when it is idle, it only lasts up to 2 hours (that's the best so far). I left it on to test the battery while it was doing literally nothing and it lasted only 2 hours. When I use it things get even worse, for example, 1 hour with best 1h 30m.
A week ago I went to the store for a battery replacement and they claimed that the issue was fixed but I got the exact same times after I tried it at home.

Is there something else that might be causing this?

[Echo_Lake]

@JimGr0

Thank you for posting on the HP Support Community.

I have a few troubleshooting steps we could try to fix the issue:  

Run hardware diagnostics test on battery:

Use the following steps to open the Component Tests menu.

1. Hold the power button for at least five seconds to turn off the computer.
2. Turn on the computer and immediately press Esc repeatedly, about once every second. When the menu appears, press the F2 key.
3. On the main menu, click Component Tests.
4. The Component Tests menu displays. Your Component Tests menu might be different, depending on the components installed on your computer.
5. To run both tests simultaneously, in the Component Tests menu, click Power Source, and then click Run once. Each component can also be tested individually.

Battery Test:

Follow these steps to perform the Battery Test:

1. In the Component Tests menu, click Power, and then click Battery.
2. Click Run once. The Battery Test begins.
3. When the battery test is complete, the results are displayed on the screen. For additional battery information, click Battery Details.
   Click here:  https://support.hp.com/in-en/document/c04700771 Testing and Calibrating the Battery (Windows)

If the test passes, continue with these steps:

1. Go to Start, search for Device Manager, and open this result.

2. Expand batteries.

3. Right-click on the ACPI option (usually the 2nd option) and select delete or uninstall. Follow the prompts.

4. Shut down the computer. 

5. Disconnect the charger.

6. Remove the battery.

7. Hold down the power button for 1 minute.

8. Insert the battery only.

9. Attempt to turn the battery on.

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.