Global Electric Scooter Motor Market Assessment, By Type [Permanent Magnet Synchronous Motor, Brushed DC Motor, Brushless DC Motor], By Positioning [Hub Motor, Mid-Drive Motor], By Battery Type [Lithium-Ion Batteries, Sealed Lead-Acid Batteries], By Voltage Type [Below 50V, 50V and above], By Sales Channel [Original Equipment Manufacturer, Aftermarket], By Region, Opportunities and Forecast, 2018-2032F