If you do not use the product for a long
time, please fully charge it before
storing. Turn off the host and keep
charging power to it every 3 months to
prevent
the
battery
from
over
discharge.
If the battery is over discharged or is
not used for a long time, the product
may not be able to be charged. Please
contact our company for after-sales
maintenance. Do not disassemble it by
yourself.
3.Clean the drive wheels and the
universal wheel.