Features : Choice of battery voltage - 6V to 12V LED Wattage - up to 3W Built in protection for short circuit, over voltage, l ow voltage, deep discharge, overload, panel reverse, battery reverse. Very low leakage (no load) current <1ma Digital Intensity control Very high efficiency > 85% Mobile charger option Option of many batteries such as lead acid, dry battery, Lithium battery Economical, compact design.