... charger, controlled by Microprocessor 2,Supply 48V,60V,72V,96V etc. 3,Effiency: 95%,CE certificate. Silicon Battery Charger Features : 1,Ac ... 110V/220V voltage selector for charger can use both 110Vac and 220Vac.2,Efficiency: 85%-90%.3,Cooling need a fan ... more efficient,faster charging.5,Also supply lighter weight and compact size allows on-board use and offers space advantages.6,Aluminum alloy ...