Page 7 of 13
7.6. Battery Indication
When the battery is full, all five segments of the battery
will be illuminated. When the battery is critically low, the
battery will have no segments and will flash.
Full Low power Under voltage Empty
7.7. USB Charging
There is a USB port on back of the display that can be
used for charging mobile phones and other electronics.
The standard output voltage is 5V with a max current of
500mA.
The USB port will continue to function even when JUST
ONE is powered off, so long as the battery is still
connected and on. While charging the red led at the
bottom of the screen will flash. While powered on press M
and D to enter into charging mode. When charging is
completed, this function will exit automatically.
