Meetthe NOCO GEN5X2, our most rugged, compact, and powerful, onboard marine battery charger we have ever made. The GEN5X2 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 5-amps of pure charging power, plus doubles as a battery maintainer and battery desulfator. Included is a GEN5X2 10-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.