Solution for shortening battery life after upgrading Win8.1 system

If you upgrade your Windows RT version of Surface from Windows RT 8.1 Preview system to Windows RT 8.1 system, I believe that the battery life will be significantly shortened. The following is a small series to introduce the solution for everyone.
1. During the update process, because the wireless adapter power policy has not been transferred, the electric hospital measurement will be restored to the default value, which greatly increases the power consumption during use and standby.
2. We can restore the wireless adapter power policy to the correct settings to solve this problem, first open the administrator command prompt:
— swipe from the right edge of the screen to the left, and then click "Search" ; (If you are using a mouse, point to the lower right corner of the screen, move the mouse pointer up and click "search")
— then type "command prompt"
&mdash in the search box Touch and hold or right-click "command prompt" to bring up the context menu, click or click "run as administrator"
— in the "user account control" dialog , click or click "Yes"
— Then at "Administrator: Command Prompt", enter "powercfg -setdcvalueindex SCHEME_CURRENT 19cbb8fa-5279-450e-9fac-8a3d5fedd0c1 12bbebe6-58d6-4636 -95bb-3217ef867c1a 3"
— Finally enter "powercfg -setactive scheme_current"