1,Intelligent battery charger, controlled by Microprocessor 2,DC: 48Volt,10Amp battery charger 3,Effiency: 95%,CE certificate. 48Volt 10Amp battery charger features : 1,Ac input: 110Vac or 220Vac as per customers' required, or we can make 110V/220V voltage selector for charger can use both 110Vac and 220Vac.2,Efficiency: 85%-90%.3,Cooling need a fan.4,Automatic,Advanced ,high frequency,swich mode ...