NOCO GENIUS 2D: 2 Amp Direct-Mount Battery Charger and Maintainer The GENIUS2D is a 2-amp direct-mount battery charger and battery maintainer engineered to be securely mounted nearby the battery. It's designed for all types of 12-volt lead-acid batteries, including flooded, gel, AGM and other maintenance-free batteries. It features our all-new hyper-density technology making it the most compact, lightweight and energy efficient battery charger on the market, plus an integrated thermal sensor for improved battery life. All-new next-generation battery charger with hyper-density technology (HDT) - now smaller, lighter, and with improved features to increase battery life. Designed for 12-volt lead-acid batteries, including most flooded, gel, AGM, and maintenance-free, as well as automotive, marine, RV, and deep-cycle batteries. The perfect battery maintainer for daily battery maintenance or long-term storage of cars, boats, trucks, RVs, and equipment, plus suitable for charging ATVs, wave runners, lawn mowers, and more. Engineered to be securely mounted nearby the battery with its rugged snap-fit mounting bracket and effortlessly installs into most materials with truss-head self-tapping screws. Integrated thermal sensor to maximize battery life and automatically compensates charging for both cold and hot environments. Enjoy countless hours of safe charging without any risk of overcharging your batteries, plus additional safety like spark-proof connections, and reverse polarity protection. Includes a 2-amp direct-mount battery charger and battery maintainer with a 24-inch Type-A A/C cable and 24-inch D/C cable with eyelets, plus a mounting bracket, self-tapping truss-head screws, and user guide, plus a 3-year hassle-free warranty.