Battery drain after dual boot - Acer Swift SF313-52G

Hi everyone, I have an Acer Swift SF313-52G and I have a problem after installing Windows 11 and Ubuntu in dual boot. Initially I only had Windows 10 (default version) and I didn't have any problems. Later I decided to install those two operating systems but I'm having a problem with the battery, that is, it drains even when the laptop is turned off. I often start Windows and see the battery instantly go from a relatively high percentage down to 0% when I turn off the laptop. How can I solve? What do you think it is due to? I don't think it's a battery problem since everything was working fine until the day before. I apologize for my low level of English. Thanks a lot to everyone in advance.

//Edited the content to add model name.

Accepted answers

All comments

Leostat

do you have any usb peripherals attached to the laptop? it could be giving power to devices when off but i wouldnt expect that to flatten the battery overnight. You could check the battery report and energy reports, as well as the battery stats in the control pannel to see if it suggets anything which is sucking power

billsey

Check to see if you have Fast Startup set on the Windows side. If you do it will try to keep some stuff active even with the system off, and that can drain power some.

antoniods97

Leostat said:

do you have any usb peripherals attached to the laptop? it could be giving power to devices when off but i wouldnt expect that to flatten the battery overnight. You could check the battery report and energy reports, as well as the battery stats in the control pannel to see if it suggets anything which is sucking power

No, I don't have any peripherals attached, also from the BIOS I have disabled the possibility of having the USB ports turned on when the PC is turned off

billsey said:

Check to see if you have Fast Startup set on the Windows side. If you do it will try to keep some stuff active even with the system off, and that can drain power some.