6/3A, 6/12V, Fully Automatic Battery Charger, Automatically Adjusts The Amperage To Charge & Maintain, Multi Stage Charging For Added Precision, Safety & Battery Life, 6/12V Auto Voltage Detection, Reverse Hook Up Protection, Charger Will Not Operate If Clamps Are Reversed, Micro Processor Controlled, LED Will Flash, Energy Efficient, Ideal For Charging Automotive, Power Sports, & Marine Batteries, 6' Power Cord, 1 Year Warranty, 50 State DOE Compliant.