Uniden UH044SX - Manual (Page 17)

BATTERY LEVEL DISPLAY
The icon in the bottom right hand corner of the screen indicates
the current battery voltage level at all times. The battery level is
displayed in 3 levels:
UH-044
LEVEL 3
Battery 100% full
LEVEL 1
Battery approx
30% capacity
LEVEL 2
Battery approx
70% capacity
Almost Empty
Note:
When SW is pressed at
Level Empty, battery icon and
channel number will flash
14
PTT