20 AMP, 3 BANK OUTPUT ADVANCED BATTERY CHARGER. Will Work on a variety of 12v, 24v or 36v Battery Setups. Also will charge a 12v start and a 24v bank system. Power source between 90-260 volts, requires less input power, produces less waste heat, and still has a remarkably small, lightweight footprint. Three pre-programmed battery charging curves that can be set and re-set as needed by the owner to charge Lead Acid, AGM or Gel batteries.