IOTA DLS-15/IQ4 12 VOLT 15 AMP 4 STAGE AUTOMATIC SMART BATTERY CHARGER / POWER SUPPLY CONVERTS NOMINAL 108-132AC VOLTAGE TO 13.4 DC VOLTAGE FOR BOTH LOAD OPERATION AND 12V BATTERY CHARGING IDEAL FOR CHARGING ALL TYPES OF 12 VOLT LEAD ACID BATTERIES INCLUDING FLOODED, ABSORBED GLASS MAT ( AGM ) AND GEL CELL 4 STAGE CHARGING: BULK, ABSORPTION AND FLOAT STAGE AS A POWER SUPPLY THE UNITS TIGHTLY CONTROLLED REGULATION ALLOWS THE USER TO OPERATE A NOMINAL 12VDC LOAD UP TO 15 AMPS IF THE DLS VOLTAGE REMAINS IN THE LONG TERM STAGE FOR MORE THAN 7 DAYS THE IQ SMART TECHNOLOGY WILL AUTOMATICALLY DELIVER A BOOST CHARGE FOR A PREDETERMINED TIME THEN AUTOMATICALLY RETURN TO THE NORMAL FLOAT STAGE