Youll want to decrease as much background process as possible
- Go to Startup Apps in the settings and disable as much as possible then restart the computer
- Go to Power & Battery and change Power Mode to "Best Power Efficiency"
- Turn on "Battery Saver" to "Always"
- If you use chrome turn on Memory Saver and set to Maximum
- Turn Energy Saver in chrome to "Turn on when your computer is unplugged"
- Uninstall unused applications (This will decrease background processing)
- Change wallpaper to black color and don't use maximum brightness
- Turn off bluetooth
- Only have an application open if you are using it, otherwise fully close it