I Use as the stick vacuum cleaner
a) Assemble the battery into the dust cup, make sure the battery bolt head insert the dust cup
slot rightly as below
b) Attached the metal tube to the body as
below until hear click sound
c) Attached the brush to another head of metal tube
as below showed
d) Press the switch to work
Dust cup slot
Battery bolt
head
A Lower power
It's lower power when your press the switch button first time
B high power
Its high power when you press the switch button second time
It will be power off when press third time, it's kind of circle as
below showed