Key Specifications/Special Features:•Input voltage: 120 or 230V AC at 50/60Hz•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 tube and LED screen of charging status•Switch buttons for convenient manual operationFully Automatic Functions - just connect your battery - select battery type , and Your Done LED Read out indicates Voltage and charge state/condition Possibly the easiest to us charger EVER.. 2 Year Warranty on All Tank Brand Chargers by BatteryJack Inc