Mastervolt ChargeMaster Plus 24/40 CZone/MBus

The Mastervolt ChargeMaster Plus 24/40 CZone/MBus is a multi-function battery charger engineered to simplify marine electrical systems aboard fishing vessels, cruisers, and offshore boats. This 24-volt, 40-ampere charger consolidates the functions of traditional auxiliary chargers, battery isolators, and voltage-sensitive relays into a single compact unit, reducing system complexity and total installation cost while delivering reliable, intelligent charging across multiple battery banks.

Built around Mastervolt's proven battery management technology, the ChargeMaster Plus 24/40 can charge up to three separate battery banks in a fast, safe sequence that protects battery life and maximizes charge efficiency. CZone and MBus network compatibility enables seamless integration with modern marine monitoring systems, allowing skippers to monitor and control charging from the helm or via compatible displays. The unit operates on worldwide AC voltage standards, making it equally suitable for U.S. coastal operations and extended international cruising. Its compact footprint—measuring 13 x 7 x 17 inches and weighing 15.9 pounds—fits easily into engine rooms and electrical lockers where space is at a premium.

This charger addresses a common pain point for serious boaters: the clutter of separate devices required to manage house batteries, starting batteries, and auxiliary systems. Replacing multiple black-box components with one networked unit simplifies troubleshooting and reduces wiring complexity. Whether managing lithium, AGM, or flooded-cell batteries, the ChargeMaster Plus 24/40 delivers the intelligent three-stage charging profile each chemistry requires. For weekend anglers managing a single auxiliary battery and professional captains running complex electrical systems across multiple banks, this integrated approach reduces system failure points while delivering the fast, controlled charging modern marine batteries demand.