Guest On-Board Battery Charger 40A 4 Bank 120V Input

Description

The Guest 40A 4-Bank On-Board Battery Charger is built for boats with multiple 12V battery banks that need independent charging and clear status information from one installed charger. Each bank has its own charging, sensing, and control circuit, allowing the charger to manage the connected batteries individually rather than treating the system as one combined bank.

Fully automatic five-stage digital charging handles the charging cycle from recovery through maintenance for supported flooded and AGM lead-acid batteries. The expanded LED display shows the status of each bank, while wiring and battery-fault detection help identify installation or battery problems before they become harder to diagnose.

The charger is pre-wired for easier installation and uses an IP67 waterproof, shock-resistant construction suited to fresh- and saltwater environments. Built-in protection includes reverse polarity, over-current, over-voltage, over-temperature, and ignition protection, with in-line fuses providing additional DC wire protection.

An Auto-Maintain energy-saving mode reduces unnecessary power use once the batteries are charged. For four-bank marine systems that need 40A of installed charging capacity with individual bank management and rugged environmental protection, this Guest charger provides a straightforward onboard solution. Worth comparing against our other on-board battery chargers.