Victron MultiPlus-II 48/5000 70-95 120V
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Victron MultiPlus-II 48/5000 70-95 120V Product Description
Victron MultiPlus-II 48/5000 70-95 120V Professional Marine Inverter/Charger
Transform your vessel's power system with the industry-leading Victron MultiPlus-II 48/5000 – the ultimate marine inverter/charger that delivers uncompromising reliability, advanced power management, and seamless energy integration for serious mariners.
This professional-grade 5000VA inverter/charger represents the pinnacle of marine power technology, combining pure sine wave inversion, intelligent battery charging, and revolutionary PowerAssist technology in one robust, blue-water proven unit. Engineered specifically for demanding marine environments, the MultiPlus-II ensures your critical systems never lose power while maximizing energy efficiency and extending battery life.
Key Marine Benefits & Features
Uninterruptible Power Supply (UPS) Protection
- Ultra-Fast Transfer: Less than 20 milliseconds switchover time protects navigation electronics, communications, and computers during shore power interruptions
- Dual AC Outputs: Main output provides continuous power; auxiliary output (42A) controls non-critical loads like water heaters
- True Sine Wave Output: Clean 120V AC power compatible with all marine electronics and sensitive equipment
Advanced Power Management Technology
- PowerControl Function: Prevents generator or shore power overload by intelligently managing charging current based on available AC input
- PowerAssist Technology: Supplements limited generator or shore power with battery power during high-demand periods
- External Current Sensor: Optional 100A sensor extends PowerControl capabilities for larger vessel electrical systems
Professional Marine Construction
- Rugged Steel Enclosure: IP22 protection rating withstands marine environment moisture and salt spray
- Operating Temperature Range: -40°C to +65°C (-40°F to 150°F) with fan-assisted cooling for tropical and arctic conditions
- Compact Dimensions: 26.6" x 13.0" x 6.5" footprint optimized for tight engine room installations
Technical Specifications
Inverter Performance
| Continuous Power Output (25°C): | 5000 VA / 4000W |
| Peak Power Surge: | 9000W for starting motors and pumps |
| DC Input Voltage: | 48V nominal (39-66V operating range) |
| AC Output: | 120V AC ±2% / 60 Hz ±0.1% |
| Maximum Efficiency: | 96% for extended battery runtime |
| No-Load Power Draw: | 3W in search mode / 10W in AES mode |
Battery Charger Specifications
| Maximum Charge Current: | 70A with temperature compensation |
| AC Input Range: | 90-140V AC / 45-65 Hz |
| Charge Voltages: | 57.6V absorption / 55.2V float / 52.8V storage |
| Battery Temperature Sensor: | Included for optimal charging profiles |
Transfer Switch & Protection
| Transfer Switch Rating: | 95A maximum AC input current |
| Programmable Relay: | Configurable for alarms, generator start, or load control |
| Safety Certifications: | UL1741 pending, EN-IEC 60335-1, CSA 22.2 107.1-16 |
Marine System Integration
Expandable Power Architecture
- Parallel Operation: Connect up to 6 units for 30kW total power output
- Split-Phase Configuration: Two units provide 240V split-phase for large AC loads
- Three-Phase Capability: Three units deliver three-phase power for commercial marine applications
Solar & Alternative Energy Integration
- Solar Compatibility: Works seamlessly with Victron MPPT solar charge controllers
- Grid-Tie Integration: Compatible with shore-tie inverters for energy selling capability
- Hybrid System Ready: Supports wind, hydro, and other renewable energy sources
Communication & Monitoring
- VE.Bus Communication: Standard port for system integration and remote monitoring
- Dual General Purpose Ports: Connect external sensors, relays, and control devices
- VRM Portal Ready: Internet-based monitoring and control with GX device integration
- Bluetooth Compatible: Optional VE.Bus Smart dongle enables smartphone monitoring
Installation & Configuration
Professional Installation Requirements
- Battery Connections: M8 bolt terminals for secure 48V battery bank connections
- AC Connections: 35mm² (2 AWG) screw terminals for 120V AC wiring
- Configuration Interface: VEConfigure software with MK3-USB interface for setup
- Mounting Requirements: Vertical installation in ventilated location with adequate clearance
Marine Compliance & Standards
- EMC Compliance: Meets marine electromagnetic compatibility standards
- Safety Standards: EN-IEC 60335 series compliance for marine electrical safety
- Temperature Compensation: Automatic charging adjustment for varying ambient conditions
Why Choose the MultiPlus-II for Marine Applications
Proven Marine Heritage: Victron Energy's MultiPlus series has powered thousands of vessels worldwide, from weekend cruisers to commercial workboats and luxury superyachts.
Energy Efficiency Leadership: 96% maximum efficiency reduces generator runtime, saves fuel, and extends battery life – critical advantages for extended cruising and remote anchoring.
Comprehensive System Integration: The MultiPlus-II serves as the heart of your vessel's electrical system, intelligently managing power from multiple sources while protecting sensitive electronics.
Professional Support Network: Backed by Victron's global marine dealer network and technical support team, ensuring expert installation and reliable service worldwide.
Frequently Asked Questions
What battery bank size do I need with the MultiPlus-II 48/5000?
For optimal performance, we recommend a minimum 400Ah 48V battery bank (LiFePO4 or AGM). Larger banks provide longer runtime and better surge capacity. The 70A charger can efficiently charge banks up to 1400Ah capacity.
Can this unit power my air conditioning system?
Yes, the 9000W peak power surge capability can start most marine AC units. The 4000W continuous output can run smaller 16,000 BTU systems. For larger AC loads, consider parallel configuration or higher-capacity models.
How does PowerAssist work in real-world marine applications?
PowerAssist automatically supplements your generator or shore power when demand exceeds capacity. For example, if your generator provides 3000W but you need 5000W for a few minutes, the MultiPlus-II adds 2000W from batteries, preventing generator overload while maintaining full power to your loads.
What's the difference between MultiPlus-II and the original MultiPlus?
The MultiPlus-II adds an external current sensor option (extending PowerControl to 100A), built-in anti-islanding protection, and improved software features for Energy Storage System (ESS) applications. It's the preferred choice for new marine installations.
Do I need special marine certification for installation?
While not legally required in all jurisdictions, we strongly recommend installation by ABYC-certified marine electricians. The unit meets relevant marine electrical standards when properly installed according to Victron specifications and local marine electrical codes.
Can I monitor and control this unit remotely while away from my boat?
Yes, when connected to a Victron GX device (like Cerbo GX) with internet connectivity, you can monitor and control your MultiPlus-II remotely through the free VRM portal and smartphone app. This includes checking battery status, adjusting settings, and receiving alarms.
The Victron MultiPlus-II 48/5000 70-95 120V represents the gold standard in marine power conversion technology. Its combination of uninterruptible power supply functionality, intelligent power management, and robust marine construction makes it the preferred choice for serious mariners who demand reliable, efficient, and professionally-engineered power solutions.
Whether you're planning extended offshore passages, require backup power for critical navigation systems, or need efficient energy management for sustainable cruising, the MultiPlus-II delivers the performance, reliability, and peace of mind that marine professionals and experienced cruisers trust.
MultiPlus-II 48/5000 70-95 120V
The MultiPlus-II is a multifunctional inverter/charger with all the features of the MultiPlus, plus an external current sensor option that extends the PowerControl and PowerAssist function to 100A.
PowerControl and PowerAssist - Boosting the Capacity of the Grid or a Generator
A maximum grid or generator current can be set. The MultiPlus-II will then take account of other AC loads and use whatever is extra for battery charging, thus preventing the generator or grid from being overloaded (PowerControl function).
PowerAssist takes the principle of PowerControl to a further dimension. Where peak power is so often required only for a limited period, the MultiPlus-II will compensate for insufficient generator, shore, or grid power with power from the battery. When the load reduces, the spare power is used to recharge the battery.
Solar Energy: AC Power Available Even During a Grid Failure
The MultiPlus-II can be used in off-grid as well as grid-connected PV and other alternative energy systems. It is compatible with both solar charger controllers and grid-tie inverters.
Two AC Outputs
The main output has no-break functionality. The MultiPlus-II takes over the supply to the connected loads in the event of a grid failure or when shore/generator power is disconnected. This happens so fast (less than 20 milliseconds) that computers and other electronic equipment will continue to operate without disruption.
The second output is live only when AC is available on the input of the MultiPlus-II. Loads that should not discharge the battery, like a water heater, for example, can be connected to this output.
Virtually Unlimited Power Thanks to Parallel, Split Phase, and Three Phase Operation
Up to 6 Multis can operate in parallel to achieve higher power output. Six 48/3000/35 units, for example, will provide 15 kW / 18 kVA output power with 210 Amps charging capacity.
In addition to parallel connection, two units of the same model can be connected for a 240V split phase output, and three units of the same model can be configured for three-phase output. But that’s not all: up to 6 sets of three units can be parallel connected per phase.
On-Site System Configuring, Monitoring, and Control
Settings can be changed in a matter of minutes with VEConfigure software (computer or laptop and MK3-USB interface needed).
Several monitoring and control options are available: Color Control GX, Venus GX, Octo GX, CANvu GX, laptop, computer, Bluetooth (with the optional VE.Bus Smart dongle), Battery Monitor, and Digital Multi Control Panel.
Remote Configuring and Monitoring
Install a Color Control GX or other GX product to connect to the internet. Operational data can be stored and displayed on our VRM (Victron Remote Management) website, free of charge. When connected to the internet, systems can be accessed remotely, and settings can be changed.
Specifications:
- PowerControl & PowerAssist: Yes
- Transfer Switch: 95A
- Maximum AC Input Current: 95A
Inverter Specifications:
- DC Input Voltage Range: 39 -66 V
- Output: Output Voltage 120 VAC ± 2% / Frequency 60 Hz ± 0,1% (1)
- Continuous Output Power at 25°C (3): 5000 VA
- Continuous Output Power at 25°C: 4000 W
- Continuous Output Power at 40°C: 3700 W
- Continuous Output Power at 65°C: 3000 W
- Peak Power: 9000 W
- Maximum Efficiency: 96%
- Zero Load Power: 15 W
- Zero Load Power in AES Mode: 10 W
- Zero Load Power in Search Mode: 3 W
Charger Specifications:
- AC Input: Input Voltage Range 90-140 VAC / Input Frequency: 45 – 65 Hz
- Charge Voltage 'Absorption': 57,6 V
- Charge Voltage 'Float': 55,2 V
- Storage Mode: 52,8 V
- Maximum Battery Charge Current (4): 70 A
- Battery Temperature Sensor: Yes
General Specifications:
- Auxiliary Output: Yes (42 A)
- External AC Current Sensor (optional): 100 A
- Programmable Relay (5): Yes
- Protection: a – g
- VE.Bus Communication Port: For parallel, split phase, and three phase operation, remote monitoring and system integration
- General Purpose Com. Port: Yes, 2x
- Remote On-Off: Yes
- Operating Temperature Range: -40 to +65°C (-40 – 150 °F) (fan-assisted cooling)
- Humidity (Non-Condensing): Max 95%
Enclosure Specifications:
- Material & Color: Steel, blue RAL 5012
- Protection Category: IP22
- Battery-Connection: M8 bolts
- 120 V AC-Connection: Screw terminals 35 mm² (2 AWG)
- Weight: 32 kg / 71 lb.
- Dimensions (hxwxd): (mm) 676 x 330 x 164 / (inch) 26.6” x 13.0” x 6.5”
Standards:
- Listings: UL1741 pending
- Safety: EN-IEC 60335-1, EN-IEC 60335-2-29, CSA 22.2 107.1-16
- Emission, Immunity: EN 55014-1, EN 55014-2, EN-IEC 61000-3-2, EN-IEC 61000-3-3, EC 61000-6-1, IEC 61000-6-2, IEC 61000-6-3
*Note: For a short period of time this product was called MultiGrid-II
Please contact your dealer for any returns, repairs or support issues related to this product.Frequently Asked Questions (FAQ) About VICTRON MULTIPLUS-II 48/5000 70-95 120V
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Victron MultiPlus-II 48/5000 70-95 120V Technical Specifications
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