Toshiba WT310 - Manual (Page 49)

White Indicates the AC adaptor is connected and the
battery is fully charged.
No light Under any other conditions, the indicator does
not light.
If the battery pack becomes too hot while it is being charged, the charge
will stop and the Battery indicator will go out. When the battery pack's
temperature falls to a normal range, charging will resume - this process will
occur regardless of whether the computer's power is on or off.
Power indicator
Check the Power indicator to determine the power status of the computer -
the following indicator conditions should be noted:
White Indicates power is being supplied (either from the
AC adaptor or battery) to the computer and the
computer is turned on.
Flashing white Indicates that the computer is in Sleep Mode and
that there is sufficient power available (AC
adaptor or battery) to maintain this condition.
No light Under any other conditions, the indicator does
not light.
User's Manual 3-16