Baninni UGO BNDT001 Mode D'emploi page 29

Attach the seat cover, place the belt into the slot until it is locked.
Turn the knob on the seat and dust. The elastic should be by the
footrest and be well attached.
Use a screwdriver to open the battery cover and remove the battery
cover. Insert the batteries with correct polarity, then put back the
cover and tighten.
a
d
2
bc
e
1
，
3