Mastervolt 24V 100A Mass 24/100 Mains Battery Charger

Heavy-Duty 24V Charging for Marine, Industrial, and Off-Grid Systems

The Mastervolt Mass 24/100 is an industrial-grade 230V AC mains battery charger engineered for continuous operation in the most demanding environments. Delivering a substantial 100A charge current for 24V battery banks, this unit is purpose-built for commercial marine vessels, mobile service vehicles, and critical off-grid infrastructure where electrical reliability is paramount.

Unlike standard consumer chargers that often struggle in high-ambient temperatures or corrosive conditions, the Mass series is designed to deliver full rated output in temperatures up to 40°C. It is compatible with every battery chemistry, including Lithium-ion, Gel, AGM, and flooded lead-acid, and features specialized circuitry capable of safely recovering completely flat batteries.

Engineered for Harsh Environments

Equipment installed in engine rooms, coastal facilities, and mobile plant compartments faces constant exposure to moisture, vibration, and heat. The Mass 24/100 mitigates the risk of premature failure through a lightweight yet robust chassis constructed from stainless steel and anodised aluminium. Internally, vital electronic components receive a protective conformal coating to prevent short circuits and corrosion caused by dampness or condensation.

Installation is straightforward and secure, utilizing heavy-duty side-mount flanges and protected bottom cable glands for clean wiring entry. An integrated front-facing LED status display and manual rocker switch allow for immediate local monitoring and control.

Clean Power and Intelligent System Protection

Beyond simple battery charging, the Mastervolt Mass 24/100 functions as a highly stable, ripple-free 24V DC power supply even without a battery connected. This allows system integrators and technicians to safely power sensitive DC loads, navigation equipment, and communication arrays directly from the mains without introducing electrical noise or electromagnetic interference.

To protect upstream AC infrastructure, the integrated Current Control function automatically reduces the charging current if the incoming AC voltage drops, effectively preventing shore power or generator fuse breakdown. For large-scale energy storage systems exceeding 1000Ah, multiple Mass chargers can be switched in parallel to increase total amperage capacity and provide critical system redundancy.

Key Features and Benefits

• Full Output in High Heat: Delivers continuous 100A charging performance in ambient temperatures up to 40°C without thermal derating.
• Universal Battery Compatibility: Precisely charges Gel, AGM, flooded, and Lithium-ion batteries, including deeply discharged units.
• Standalone Power Supply Mode: Provides a stable, ripple-free 24V DC output for running sensitive electronics without a battery inline.
• Marine and Industrial Compliance: Certified to DNV GL, RRR, and RMRS standards, with connections adhering to CE, ABYC A-31, and IEC 60945 guidelines.
• Active AC Fuse Protection: Built-in Current Control automatically scales back power draw during AC voltage drops to prevent nuisance tripping.
• Environmental Resilience: Anodised aluminium housing and coated internal electronics resist salt mist, condensation, and electromagnetic interference.
• Precision Thermal Management: Includes a standard temperature sensor to optimize charge voltages based on battery temperature, extending cell lifespan.

Upgrade Your 24V Power Infrastructure

Equip your vessel, commercial fleet, or off-grid installation with a charging solution built for continuous duty. Order the Mastervolt Mass 24/100 Mains Battery Charger today for dependable, certified 24V power management.