Samlex America (SEC1280A 12V 80 Amp Battery Charger IDEAL FOR CHARGING ALL TYPES OF 12 VOLT LEAD ACID BATTERIES INCLUDING FLOODED, ABSORBED GLASS MAT ( AGM ) AND GEL CELL ADVANCED SWITCH MODE DESIGN USER SELECTABLE AC INPUT VOLTAGE: 120V / 60 Hz OR 230V / 50Hz BY MEANS OF A DIP SWITCH SETTING CONVERSION TO A TWO-STAGE ALGORITHM IS POSSIBLE FOR CHARGING BATTERIES CONNECTED TO A DC LOAD ( DC UPS ). THIS UNIT CAN ALSO BE USED AS A DC POWER SUPPLY