Smart, 2/6/10A, Auto Battery Charger, Features; 3 Stage Automatic Charging, Large Digital LED Display, Digital Diagnostics & Fault Codes, High Frequency Power Conversion Technology, Vehicle Alternator Check, Automatic Float Mode Monitoring, Compensates For Low AC Extension Cord Use, Reverse Polarity Indicator, Charging Complete Indicator, Spark Resistant Reverse Hook Up Protection, Microprocessor Control, Digital Smart Control, Heavy Duty Cables & Clamps Included, 5 Minute Charge To Start, 4-1/2 Hours To Full Charge, Approximate Charging Times.