... ' required, or we can make 110V/220V voltage selector for charger can use both 110Vac and 220Vac.2,Efficiency: 85 ... frequency, switch mode design allows more efficient, faster charging.5,Also supply lighter weight and compact size allows on-board use and ... current, over voltage. over temperature, short circuit and reverse polarity protection.8,Led display charging states.9,Can modify max charging ...