Using the Erroneous voltage charger is like using a small hose to fill an enormous tank—it will never get the job done effectively. It would consider forever to charge or perhaps hurt your battery. Generally Examine your scooter's manual or inquire the manufacturer to discover the appropriate charger voltage. https://www.electricscooter.ltd/factory-supply-eec-15000w-electric-scooter-with-hydraulic-brakes/