It is used with 12 Volt/24 Volt DC lead-acid flooded, AGM, gel cell & Ni-Cad batteries. It features series pulse width modulation type & switch selectable. It has digital LED display, single 3 color LED indicator display & powder coated steel face plate. It measures 7-1/2 inch width x 4-1/4 inch height x 1.35 inch depth.