Fully Automatic Functions - Just Connect Your Battery - Select Battery Type and Youre DoneLED Read out indicates Voltage and charge state/conditionPossibly the easiest to us charger EVERRecommended for use in the U.S. onlyKey Specifications/Special Features: Input voltage: 120V AC Output voltage: 12V DC Charging current: 2 (trickle charge) 6 and 10A (rapid charge) For Batteries Capacity 6 to 230Ah All types of 12V Lead-acid batteries (WET MF AGM and gel) Reverse polarity overcharge and short-circuit protections Digital LED screen of charging status Switch buttons for convenient manual operation