Meet the NOCO GENPRO10X2, our most rugged, compact, and powerful, onboard marine battery charger we have ever made. The GENPRO10X2 is designed to charge and maintain up to two (2) 12-volt lead-acid and lithium-ion batteries, including flooded, gel, AGM, and deep-cycle batteries. Each 12-volt battery bank provides up to 10-amps of pure charging power, plus doubles as a battery maintainer and battery desulfator. Included is a GENPRO10X2 20-Amp 2-Bank Waterproof Onboard Marine Battery Chargers (120-240VAC), Self-Tapping Mounting Screws, User Guide, 3-Year Warranty and certified to UL1236, ISO 8846, and 33 CFR 183.410.