Battery maintenance made easy! Battery Doctor Fully Automatic, Portable Battery Charger. “Is there a doctor in the house?” Keep your vehicle’s battery in top shape 24/7/365. A must-have item during periods of battery inactivity and storage. Automatically senses the state of charge of your battery, then safely adjusts their charging rate to ensure self-discharging and post corrosion does not occur. UL-listed. Carries a 5-year Limited Mfr.’s Warranty. 7 automatic stages: refresh, soft start, bulk charge, absorption, equalize, analysis and float; Automatically detects defective batteries; LED shows charging rate; Thermal resistor senses overheating; Surge and short circuit protected; Includes 6′ AC cable and 8′ DC cable; Maintains 6 to 160A / hrs. Battery Doctor 2/4/8 Amp 12V Smart Charger California Prop 65 – Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. “Product cannot be sold or shipped to the State of California.”