Mastervolt 24V Mass 24/50-2 Mains Battery Charger, DNV GL Certified

Heavy-Duty 24V 50A AC-DC Charging for Commercial, Marine, and Off-Grid Systems

Engineered for continuous operation in the harshest conditions, the Mastervolt Mass 24/50-2 delivers dependable, industrial-grade battery management. Whether installed in a commercial vessel's engine room, an emergency response vehicle, or a remote off-grid power station, this 230V mains battery charger provides consistent 24V output when failure is not an option. Unlike standard consumer-grade chargers that can suffer premature failure from moisture, heat, or electrical noise, the Mass series is purpose-built to thrive in demanding environments.

Built to Survive Harsh Marine and Industrial Environments

Moisture, salt air, and thermal stress are the primary causes of electronic failure in mobile and marine applications. The Mass 24/50-2 directly mitigates these risks through superior physical and internal engineering. The chassis is constructed from a lightweight yet rugged combination of stainless steel and anodised aluminium, offering high resistance to corrosion and physical impact. Internally, critical electronic components feature a specialised protective coating that shields the circuitry against dampness and condensation.

Designed to maintain full power output in ambient temperatures up to 40°C, this charger won't unexpectedly throttle back when working hard in warm plant rooms or enclosed lockers. Furthermore, advanced electromagnetic compatibility (EMC) shielding prevents interference with sensitive onboard navigation, communication, or control systems.

Versatile Multi-Chemistry Charging and Standalone Power Supply

Modern electrical systems require flexibility. This 24V 50A battery charger is compatible with all battery chemistries, effortlessly handling large battery banks ranging from 80Ah to 1000Ah or more. It is even capable of recovering completely flat batteries, reducing the risk of costly battery replacements after an accidental deep discharge. An included temperature sensor comes standard to ensure optimal, safe charging voltages across varying climate conditions.

Beyond battery charging, the unit functions as a highly stable, ripple-free 24V DC power supply. It can power sensitive 24V loads directly without a battery connected, making it ideal for system commissioning, workshop testing, or maintaining onboard systems during battery maintenance. Built-in Current Control technology automatically dials back the charger's output if the 230V AC supply voltage drops, preventing nuisance fuse trips on weak shore power or generator connections.

Key Features and Benefits

• Marine-Grade Construction: Lightweight stainless steel and anodised aluminium enclosure with coated internal components to resist damp and condensation.
• Ripple-Free Power Supply Mode: Delivers clean, stable 24V DC power to run sensitive equipment even without a battery bank connected.
• Flat Battery Recovery: Capable of initiating a charge cycle on deeply discharged batteries across all battery types.
• Intelligent Current Control: Prevents AC input fuse breakdown when shore power or generator voltage drops.
• High-Temperature Performance: Delivers full 50A charging output in ambient environments up to 40°C.
• Scalable Architecture: Supports parallel operation with multiple Mass units to increase total charging current for massive battery banks.
• Practical Installation Details: Features an intuitive front LED status panel, a manual rocker switch, integrated keyhole mounting brackets, and sealed cable gland entries.

Certified Compliance for Commercial Applications

When specifying equipment for commercial survey or strict regulatory compliance, certification matters. The Mastervolt Mass 24/50-2 holds DNV GL, RRR, and RMRS type approvals, alongside connections engineered in accordance with CE, ABYC A-31, and IEC 60945 standards. This reduces compliance risks for marine electricians, naval architects, and system integrators working on classed vessels and industrial installations.

Upgrade Your 24V Charging Infrastructure

Equip your vessel, fleet vehicle, or off-grid system with a commercial-grade charging solution built for longevity. Select the Mastervolt Mass 24/50-2 for certified, ripple-free 24V power management.