... battery charger 2.High Frequency, Switching Power mode. MCU control. 3.DC: 24V,15A. 4.AC: 110V, 220V. General Features for power wheelchair battery ... 3,Cooling need a fan.4,Automatic,Advanced ,high frequency,swich mode design allows more efficient,faster charging ... modify max charging voltage as per customers different kinds of lead-acid battery.10,Operating temperature:0-50 ,Storage temperature:-10 - ...