When the Travelcube is powered on, the light will be amber for the first 20 seconds.
When the timer is activated, the LED light will be amber for the first 20 seconds.
When the unit is charging, the LED light will be a solid red color until it's fully charged.
If the battery is dying, the flashing red light indicates it's low and the unit may shut down at any time if it is unplugged.