Power Indicator - Toshiba PORTÉGÉ Z20t-B Series User Manual

If the battery pack becomes too hot while it is being charged, the charge
stops and the indicator goes out. When the temperature of the battery pack
falls to a normal range, charging will resume. This process occurs
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
Flashing white
No light
User's Manual
Indicates that power is being supplied to the
computer, and the computer is turned on.
Indicates that the computer is in Sleep Mode and
that there is sufficient power available (AC
adaptor or battery) to maintain this condition.
Under any other conditions, the indicator does
not light.
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