Honda WW150HV 2018 Owner's Manual page 118

Other Warning Indications If the CHARGE/ASSIST Level Display and the Battery for Hybrid System Gauge are Flashing
u
If the battery for hybrid system indicator goes
off, you may continue riding.
If the engine dose not start or the battery for
hybrid system indicator still stays on, have
your scooter inspected by your authorised
dealer.
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