DF series battery charger for changing the voltage of the electric wire netting to the standard voltage of charging,it is specially designed for the ail-purpose.lead-acid battery.and the settled valve type sealed lead-acid battery in use, theris the over-current protects,also the selector switch which can choose high or low speed charge conveniently. ---Input: AC220v or 110v 50Hz/60Hz ---With 6v/12v or 12v/24v selector switch ---Over-current protection ---With hig-low/speed selector switch ---certification: CE ---Product list: DF-1771------42.5*26*47cm---8pcs/ctn---20/18kgs DF-1772------42.5*26*47cm---8pcs/ctn---22/20kgs DF-1773------44.5*32*16cm---2pcs/ctn---12/11kgs DF-1774------44.5*32*16cm---2pcs/ctn---15/14kgs DF-1175------41.5*29*22.5cm---1pcs/ctn---18/16kgs DF-1776------32.5*30.5*27.5cm---4pcs/ctn---18/16kgs DF-1777------32.5*30.5*27.5cm---4pcs/ctn---20/18kgs DF-1778------44.5*32*16cm---2pcs/ctn---15/14kgs DF-1779------44*32*16cm---2pcs/ctn---14/13kgs We also provide OEM service.