This is a recent feature introduced by Microsoft. It allows you to regulate just how much of your battery power will be used. You can slide the bar to different settings.
I recommend you keep it on “battery saver” during downtime. And unless you are pushing your pc, keep it on balanced mode for most of the time.
Customize the Power and Sleep Settings
Sometimes we can forget to turn the laptop off and it keeps running in the background. This consumes a lot of power. To fix this, go to settings > systems > power & sleep. Here, you can customize your laptop’s power consumption when you are not using it.
You can set it so that it turns off after a certain period of inactivity. Other times, you can have the screen turn off to save you power.
Prevent Overheating
Overheating is a reliable way of damaging any PC hardware. So, ensure that there is proper ventilation for the heat inside the laptop to come out. If you can, clean the cooling fans and other parts periodically so that dust build-up does not happen. Excessive heat can damage your laptop’s battery. Avoid leaving it in the car during summer and test your laptop’s temperature while you work.