Mastervolt Mass Combi Pro Pure Sine Wave Inverter Charger

High-Frequency Power Management and Battery Charging for Demanding Applications

Engineered for professional and semi-professional environments, the Mastervolt Mass Combi Pro integrates a powerful pure sine wave inverter, an advanced battery charger, and an intelligent transfer system into one compact, robust enclosure. Utilising modern high-frequency (HF) switch-mode technology, this unit eliminates the heavy transformers found in legacy systems. The result is a remarkably lightweight, space-saving footprint that operates without annoying transformer hum, making it exceptionally well-suited for marine vessels, commercial vehicles, and off-grid installations where payload and acoustic comfort are critical.

Clean AC Output for Sensitive Electronics

Inferior power inverters often produce distorted waveforms that cause erratic behaviour, audible buzzing, or premature failure in modern appliances. This 230V inverter charger delivers a grid-quality pure sine wave output, significantly reducing the risk of malfunctions when powering sensitive equipment, medical devices, variable-speed tools, and high-end audio-visual gear. With the ability to deliver up to 200% peak power, it effortlessly handles high inrush currents from demanding inductive loads like compressors, pumps, and air conditioning units without tripping offline.

Intelligent 3-Step+ Charging and Battery Preservation

Maximising the lifespan of your energy storage bank requires precise voltage regulation and minimal electrical stress. The integrated 3-step+ battery charger produces a very low DC ripple current, ensuring faster, safer charging cycles while preventing excessive heat build-up within the battery cells. Furthermore, the dynamic battery voltage window continuously monitors load conditions to extend AC power availability, allowing you to run appliances for longer periods without subjecting your batteries to damaging deep discharges.

• 230V Pure Sine Wave Output: Provides clean, stable AC electricity for sensitive electronics and heavy-duty appliances alike.
• High-Frequency (HF) Architecture: Delivers up to 200% peak power capability in a lightweight, compact, and hum-free design.
• Intelligent 3-Step+ Battery Charger: Features low DC ripple current to accelerate recharge times and extend overall battery longevity.
• Power Assist Functionality: Supplements weak shore power or small generators with battery energy to prevent tripped breakers and blown fuses.
• Active Optima Cooling: Combines a vertical heatsink design with demand-controlled fan operation to minimise mechanical noise and thermal stress.
• Professional Installation Features: Equipped with heavy-duty keyhole mounting rails and a dedicated lower connection compartment for secure high-current DC and AC wiring.
• Certified Reliability: Fully compliant with stringent CE and ABYC standards for marine and mobile electrical safety.

Seamless Power Assist and Thermal Efficiency

When connected to limited shore power or a compact generator, the Power Assist function actively prevents overloaded circuits and blown fuses. By automatically supplementing the incoming AC supply with energy drawn from the battery bank during peak demand, it ensures uninterrupted operation of heavy onboard appliances. Thermal regulation is managed via Active Optima Cooling, which pairs an efficient vertical heatsink with variable-speed fans. This intelligent airflow concept ensures the internal components remain within optimal operating temperatures while drastically reducing unnecessary fan noise in living or working quarters.

Built for Rapid, Compliant Installation

Designed with system integrators and marine electricians in mind, the unit features an accessible lower connection compartment that houses robust DC terminals and AC connections, alongside an intuitive front control panel with clear LED status indicators. Heavy-duty side mounting brackets with keyhole slots simplify bulkhead mounting in tight engine rooms or utility lockers. Carrying both CE and ABYC certifications, this combined inverter charger meets rigorous international safety and engineering standards.

Upgrade Your Autonomous Power System

Equip your vessel, commercial fleet vehicle, or remote off-grid setup with dependable, professional-grade energy management. Integrate the Mastervolt Mass Combi Pro into your electrical system today for seamless AC power and intelligent battery care.