It's possible that your battery life is lower than expected due to a number of factors, including background processes, high screen brightness, and certain hardware components. Here are a few suggestions to help improve your battery life:

1. Check for any unnecessary background processes or apps that may be running and consuming battery power. You can use the Task Manager in Windows to identify and close any unneeded programs.

2. Lower the screen brightness and reduce the amount of time before the display turns off to save power. You can adjust these settings in the Windows power plan settings.

3. Ensure that the latest drivers and firmware updates are installed for your laptop. These updates may contain performance improvements that can help with battery life.

4. Consider disabling any hardware components that are not needed, such as Bluetooth, Wi-Fi, or any ports that are not in use.

5. You can also try adjusting the power settings for individual apps or programs to reduce their impact on battery life.

6. If the issue persists, you may want to contact Dell's customer support for further assistance. They can help diagnose any underlying hardware issues that may be affecting your battery life.

I hope these suggestions help you improve your battery life.

I also have similar problem and i found some bugs related to that i listed them below.

For me laptos uses less energy after reboot but if you hibernate or connect external monitor then for some reason things r broken please see my below findings and be sure to update to latest bios it solved one issue for me:

https://www.dell.com/community/Inspiron/G15-5521-bug-in-switching-to-integrated-graphics-after/m-p/8349328

https://www.dell.com/community/Inspiron/G15-5521-Power-usage-after-hibernation-or-shut-down/m-p/8314440#M155316

@vishvajitd I have already tried your suggestions but haven't any result. 110 mins it is maximum what I have got.

@cookie_monter Yep, I have tried to update my bios to latest one but haven't any result (because I have seen your article about this problem early ). But interesting fact, that when i just switch on my laptop it shows me that battery have 6 hours of remaining but when I trying to charge one to full capacity it works like 100 mins. Really strange things happens here haha.

@Volodymyr1111 what do u mean "when i just switch on" do you mean reboot ?

" but when I trying to charge one to full capacity" dou mean that after charging and disconnecting from power source then power consuptions goes up ?

Can you check something for me if you connect monitor to hdmi and power cord is plugged if you go to youtube and watch movie you should see that rtx is working in task manager what happen when you disconnect from monitor and laptop goes into integrated graphic mode do u still see that rtx is used in task manager (ofcourse you need to have optimus on and rtx setup in automatic mode)?

also if watch youtube with monitor plugged in and rtx is used if you hibernate laptop and unhibernate and disconnect monitor what happens then ?

Yes, I mean reboot. Sorry but I haven't external monitor. Also I have return laptop to shop today and wait for their result.

@Volodymyr1111 please let me know what will come out from it.

@cookie_monter Hi, shop return my money and that's. Looks like they can't do anything with it. @cookie_monter @vishvajitd Thanks for trying to help me fix this problem:)

I have fixed this problem by Installing windows 10 and then disabling all background apps in winows setting. Not letting apps run in the background seems like the probable cause.