UBK Systems LCD UB1 Manual page 12

NORMAL OPERATION
1 1 . B a t t e r y d i s p l a y
There are six grids in the battery frame. When the battery is fully
charged, the six grids are all bright. When the battery is low, the last
grid will flash. This indicates that the battery is already low and needs
to be charged immediately
1 2 . L i n e o r d e r d e f i n i t i o n
1 Red: battery positive
2 Black: battery negative
3 Yellow: Instrument communication signal (BB)
4 Green: Instrument communication signal (AA)
5 Blue: electric lock
1 3 . 1 0 m i n u t e s o f a u t o m a t i c s l e e p
When the electric bicycle does not operate for more than
10 minutes, the system will automatically sleep.