Genius GEN2 20A Onboard Battery Charger - 2 Bank, Wicked Tough, Wicked Smart! The GEN2 on-board battery charger offers the perfect mix of high-technology and rugged construction. With a fully-sealed, waterproof housing, the GEN2 can be mounted directly onto a variety of applications including boats, tractors and a wide range of equipment. With the intelligent NOCO VosFX processor constantly monitoring the power input, attached battery and charger itself, the GEN2 charger is capable of diagnosing, recovering, charging and maintaining batteries. Waterproof Fully-Sealed: 100% completely sealed. Protects our units from the most extreme environments and rated at IP68. Rapid Charging Technology: Charges batteries 2X faster than traditional linear battery chargers. High Frequency, High Efficiency: High-frequency, high-efficiency for a lightweight, compact charger. Designed for Safety: Reverse polarity, short circuit, open circuit, spark proof, overheat, overcurrent & overcharge. Full interactive, Rapid charging technology, Multiple battery chemistry, Specific gravity optimization, Designed for safety, Variable input compensated, Abnormality protection, Ignition protected, HF/HE switch mode design, Recovery mode, Waterproof.