Toshiba AT300 - Manual (Page 12)

The number of possible pixel failures of your display is defined
according to ISO 9241-307 standards. If the number of pixel failures is
less than this standard, they will not be counted as defect or failure.
Battery is a consumption product, since the battery time depends on
the usage of your tablet. If the battery can not be charged at all, then it
is a defect or failure. The changes in battery time is not a defect or
failure.
Conformity marking for radio and
telecommunication equipment:
User's Manual 1-8