User Guide
© 2014 Microsoft      Page 21 
  Lock screen. Lower-left corner of the lock screen.  
  Desktop taskbar. Battery status appears on the desktop taskbar. Tap the battery icon to see the 
percentage remaining. 
When you see a low battery warning, plug your Surface Pro 3 into an electrical outlet. If you don’t recharge the 
battery, Surface will eventually save your work and shut down. 
Notes 
  It takes 2-4 hours to fully charge your Surface Pro 3 battery from an empty state. 
  Surface Pro 3 can’t be charged through the USB port. Instead, you need to use the included power 
supply. 










