If anyone has seen my threads in the original (superior) MIUI forum, you know that me and many others had problems with very little battery life from the Xiaomi Air 13 2017 laptop, about 2 hours or so. Now it lasts for 7 hours! I finally fixed it today and I'm happy to share how I did it.|
First and foremost let me tell you that replacing the battery would not do you any good unless your battery has been worn a lot. I tried it and it didn't fix anything, only slightly improved battery life and consistency.
The first thing to do is go to your BIOS by pressing F2 repeatedly while turning on the laptop, and checking if the BIOS version code ends in 0504 or 0705. If it is 0504, you need to update the BIOS first. Before doing so, revert to optimal defaults in the BIOS and save. Here you can download and find steps how to update:
Next, get a clean new copy of Windows, preferably using the media creation tool. I used Windows 10 Pro and the same registration key I used previously. Boot the USB and format the 256gb partition and install Windows on that. Make sure to disable every additional setting like sharing data with Microsoft, there is a page full of privacy settings in the installation.
After getting to desktop, at this point I still didn't get the battery life fixed. Additional steps are needed.
Go to xiaomi.cn and find the downloads for the drivers for this laptop model. Make sure you get the exact right model, there are two pages so check them both for the exact match, some look the same. This is very important.
Extract everything using WinRAR and install every driver given except MiTongBu. Make sure to install the integrated graphics driver before the nvidia one. For everu driver that asks to restart, restart. Don't install another driver before restarting. The sound driver may restart multiple times.
Lastly, open nvidia control panel found in the taskbar, and click Manage 3D settings. Choose the preferred GPU as Integrated Graphics and Save.
Now charge your laptop to 100% and if you did everything like me it should be fixed.
Best of luck! :D
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