Victron MultiPlus-II 48/5000/70-50 GX 230V
by Victron Energy
Introduction
The Victron MultiPlus-II 48/5000/70-50 GX is a premium inverter/charger with built-in GX monitoring, designed for high-performance off-grid, backup and hybrid energy systems across New Zealand and Australia.
Combining a powerful pure sine wave inverter, advanced battery charger, high-speed transfer switch and integrated GX connectivity in one unit, it is ideal for homes, motorhomes, marine systems, off-grid cabins and solar storage installations.
Key Features
Pure sine wave inverter for sensitive electronics
Powerful 70A adaptive battery charger
Integrated ultra-fast transfer switch (UPS function)
PowerAssist to prevent generator or shore power overload
PowerControl for managing limited grid or generator supply
Parallel and 3-phase capability for scalable systems
Built-in GX monitoring and control
Integrated WiFi and Ethernet connectivity
Remote monitoring via Victron VRM without requiring a separate GX device
ESS (Energy Storage System) ready for solar + battery storage
Inverter Specifications
DC Input Voltage: 48V battery system
Continuous Output Power: 5000VA / 4000W at 25°C
Peak Power: Up to 9000W surge capacity
Output Voltage: 230V AC ±2%
Output Frequency: 50Hz ±0.1%
Waveform: Pure sine wave
Maximum Efficiency: Up to 96%
No-Load Consumption: Approx. 18W (Search mode: 2W)
Charger Specifications
AC Input Range: 187–265V AC, 45–65Hz
Charge Current: Up to 70A battery charging
Battery Charging Algorithm: Adaptive 4-stage smart charging
Charge Voltages (48V default)
Absorption: 57.6V
Float: 55.2V
Storage: 52.8V
Supported Batteries
Flooded • AGM • Gel • Lithium (LiFePO₄)
AC Transfer Switch
Transfer Current: 50A
Transfer Time<20 milliseconds (UPS level)
This ensures uninterrupted power to computers, fridges, medical equipment and other critical loads.
PowerAssist & PowerControl
PowerAssist allows the inverter to supplement shore or generator power using battery energy when loads exceed available AC supply.
PowerControl allows users to set a maximum shore/generator current to prevent tripping breakers.
Perfect for:
Caravan parks with limited power
Small generators
Marine shore power connections
Solar & Energy Storage Ready
The MultiPlus-II GX is designed for modern solar battery systems and works seamlessly with Victron MPPT solar charge controllers and compatible battery systems.
Ideal for:
Hybrid solar systems
Off-grid homes
Grid-backup installations
Peak-shaving and self-consumption systems
Monitoring & Connectivity
The MultiPlus-II GX features a built-in GX device, allowing the system to be monitored and controlled remotely using the Victron VRM Portal without requiring a separate Cerbo GX or other GX monitoring device.
View and control:
Battery status and charging
Solar production
Grid and generator usage
System performance and alerts
Environmental & Physical
Operating Temperature: -40°C to +65°C
Cooling: Fan assisted
Protection
Overload
Short circuit
Over temperature
Low battery
High battery voltage
Ideal Applications
Off-grid homes and cabins
Residential solar battery storage systems
Caravans, RVs and motorhomes
Marine and boat power systems
Emergency and backup power systems
Workshops and mobile service vehicles
Why Choose the MultiPlus-II 48/5000 GX?
This model combines the proven performance of the MultiPlus-II range with built-in GX monitoring and connectivity. The integrated GX functionality allows direct connection to the Victron VRM Portal and provides advanced system monitoring without requiring a separate GX device.
It provides seamless power switching, powerful battery charging, true hybrid energy capabilities and integrated remote monitoring in one compact unit. A professional-grade solution for dependable power in demanding Australian and New Zealand environments.