Excellent multi purpose charger the infapower universal will charge 1 ndash 4 ni mh batteries of the same type either aaa aa c d or 2 x 9v size batteries it has a built in battery tester and discharge function manual charging control ndash all charging times are controlled by the user features charging current aaa aa c d 120ma 9v14ma battery technology ni mh no channels6 4 for aaaaacampd amd 2 for 9v power typeplug amp cord ac input220 240v led charging indicatorred