On-Board Battery Charger 20A / 12V - 2 Bank - 120V InputGuest On-Board battery chargers have been redesigned from the inside out with the customer in mind. Our newest generation On-Board Marine battery chargers include leading advancements in digital charging technology and waterproof design/construction. Every Guest charger has a dedicated charging, sensing and control per bank. The easy to read graphics indicates the status of each battery bank through the charging process.Features:. All high frequency, digital charging technology. Fully automatic 5-stage performance charging. Dedicated battery charging, sensing and control per bank. Expanded LED charge status monitor. Wiring and battery fault detection. Auto-maintain energy saver mode. Up to 40 percent lighter. 100 percent Waterproof (IP67) and shock resistant for all fresh and saltwater applications. All models are pre-wired for easy installation. For all 12 volt flooded and AGM lead acid batteries. Built-in safety: reverse polarit