Acer clear.fi (only for certain models) 24, Power management 26, Battery pack 27 – Acer Aspire E1-521 User Manual
Page 18: Securing your computer 35, Expanding through options 37

Returning to a previous system condition
Returning your system to its factory condition
Acer clear.fi (only for certain models)
Installing and removing the battery pack
Taking your notebook PC with you
Disconnecting from the desktop
Traveling internationally with the computer