1,Inteligent VRLA battery charger 2.High Frequency, Switching Power mode. MCU control. 3.DC: 24V,15A. 4.AC: 110V, ... 220V. General Features for power wheelchair battery charger : 1,Ac input: 110Vac or 220Vac as ... ,Efficiency: 85%-90%.3,Cooling need a fan.4,Automatic,Advanced ,high frequency,swich mode design allows more efficient,faster charging ...