How about the Battery Saver energy saving mode of Win10 9860?

In the latest Windows 10 technology preview release Build 9860 released by Microsoft, an update is not listed in the update log, but it is very useful for users who use mobile devices. This feature can be found in the Modern Settings app: Battery Saver, as the name suggests, is a power-saving mode that boosts battery life. When turned on, the system saves power by limiting background activity.

The function description shows that this mode can be manually turned on, or an automatic rule can be set to automatically turn on when the power is reduced below a certain percentage. However, in Build 9860, the automatic rules still seem to be unavailable, and the adjustment bar is still grayed out. The manual switch switch energy saving mode status is already available.
In Windows 10 Build 9860, there are many such useful features and enhancements, although not all heavyweight features, but with these minor changes and enhancements, Windows 10 is really easier to use, more user-friendly A smooth experience.