... etc. 3,Effiency: 95%,CE certificate. Silicon Battery Charger Features : 1,Ac input: 110Vac or 220Vac ... can make 110V/220V voltage selector for charger can use both 110Vac and 220Vac.2, ... Cooling need a fan.4,Automatic,Advanced ,high frequency,swich mode design allows more efficient, ... If you have any other optional functions requirements about battery charger , please feel free to contact us. We ...