Alphasmart neo Mode D'Emploi

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Neo User’s Guide
Low battery indicator
Lithium battery
Neo contains a secondary backup battery that isn’t intended to be 
accessed by users. The lithium battery provides power to the memory 
and prevents data loss when the unit is turned off or when the 
batteries are dead or removed. The lithium battery will last 
approximately five to seven years. If you suspect a problem with the 
lithium battery, visit the AlphaSmart web site for more information 
or contact Technical Support for assistance.