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Introducing the GENIUS2D, one of our most powerful, highest-performing, energy-efficient, and compact chargers yet. The GENIUS2D is a 2-amp direct-mount battery charger and battery maintainer. 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. Its designed for all types of 12-volt lead-acid batteries, including flooded, gel, AGM and other maintenance-free 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. 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.