Victron MultiPlus-II 48/5000/70-50 Backup Power Kit
The Victron MultiPlus-II 48/5000/70-50 Backup Power Kit is a complete single-phase backup energy solution designed for residential, small business, and light commercial applications.
Built around the Victron MultiPlus-II 48/5000/70-50 Inverter/Charger and a Hubble Lithium AM2 5.5 kWh battery, this system provides dependable backup power for essential household or office loads while including the key protection, monitoring, communication, cabling, and installation accessories required for a professional system setup.
System Information
The system includes a 4,000 W continuous-output Victron MultiPlus-II inverter/charger paired with one Hubble Lithium AM2 5.5 kWh battery.
The inverter can support short-duration AC loads of up to approximately 5,200 W. At a typical continuous load of 1 kW, the battery may provide approximately 5.5 hours of runtime under ideal conditions.
Actual runtime will vary according to:
- Connected load
- Battery state of charge
- System efficiency
- Battery condition and temperature
- Inverter and standby consumption
- Installation and configuration
Avoiding unnecessary high peak loads can help extend battery runtime and improve overall system performance.
Key Features
- Complete Victron and Hubble backup power solution
- 4,000 W continuous pure sine wave output
- Approximately 5.5 kWh lithium battery storage
- Fast automatic transfer during grid interruptions
- Victron PowerAssist technology
- Intelligent multi-stage battery charging
- Integrated AC and DC protection components
- Energy monitoring using the Victron ET112 meter
- Remote Hubble battery monitoring
- Wi-Fi connectivity for compatible Victron GX monitoring equipment
- Professional Lynx DC distribution and fuse monitoring
- Suitable for future integration with solar PV equipment
Reliable Backup Power
The MultiPlus-II combines a pure sine wave inverter, intelligent battery charger, and automatic transfer switch in one unit. During a grid interruption, the system automatically supplies power from the connected battery bank to supported circuits.
Its clean pure sine wave output makes it suitable for sensitive and everyday electrical equipment, including:
- Lighting
- Internet and networking equipment
- Televisions
- Computers
- Refrigeration
- Security systems
- Small appliances
- Selected pumps and motors within the inverter's capacity
Victron PowerAssist
Victron's PowerAssist technology can supplement a limited grid or generator supply with battery power when electrical demand temporarily exceeds the available AC input.
When demand decreases, available incoming power can be used to recharge the battery.
Hubble Lithium Battery Storage
The included Hubble Lithium AM2 5.5 kWh 51 V battery provides compact, high-performance lithium energy storage. It is paired with a Hubble remote monitoring module, allowing compatible battery data and system information to be monitored remotely.
Additional battery capacity may be added where longer backup duration is required, subject to correct system design and compatibility.
Integrated Monitoring
The included Carlo Gavazzi Victron ET112 Energy Meter can measure single-phase grid energy flow up to 100 A and provide system data to compatible Victron monitoring equipment.
The kit also includes:
- Victron RS485-to-USB interface
- Victron MK3-USB interface
- Victron CCGX Wi-Fi Module Simple
- Hubble remote monitoring module
These components support system configuration, commissioning, monitoring, and communication.
DC Distribution and Protection
The included Victron Lynx Distributor provides four fused DC connection points with fuse-status monitoring. Two 200 A MEGA fuses are included for DC circuit protection.
The kit also includes high-current DC cabling, cable lugs, battery warning labels, AC disconnect switches, installation trunking, and other supporting accessories.
Kit Includes
Main Equipment
- 1 × Victron MultiPlus-II 48/5000/70-50 Inverter/Charger
- 1 × Hubble Lithium AM2 5.5 kWh 51 V Battery
- 1 × Victron Lynx Distributor
- 1 × Carlo Gavazzi Victron ET112 Single-Phase Energy Meter
- 1 × Hubble Remote Monitoring Module
Protection and Isolation
- 2 × K&N Single-Phase 40 A AC Switch Disconnectors
- 2 × Victron MEGA Fuses 200 A / 58 V
- 1 × Battery Hazard Label for Lithium-Ion Systems
- 1 × PV Roof and Hazard Label Pack
Communication and Monitoring
- 1 × Victron MK3-USB Interface
- 1 × Victron RS485-to-USB Interface Cable – 1.8 m
- 1 × Victron CCGX Wi-Fi Module Simple
- 2 × Victron RJ45 UTP Cables – 0.9 m
Cabling and Installation Accessories
- 2 × 50 mm² Single-Core 1000 V DC Cables – Black, 1 m
- 8 × 50 mm² M10 Ring Terminal Lugs
- 1 × Flat Twin and Earth 2.5 mm² Cable – 10 m
- 3 × 75 × 50 mm White PVC Trunking – 3 m
- 1 × Pack of 75 × 50 mm White Trunking Stop Ends
Specifications
Inverter/Charger
- Brand: Victron Energy
- Model: MultiPlus-II 48/5000/70-50
- Battery Voltage: 48 V
- Rated Apparent Power: 5,000 VA
- Continuous Output Power: 4,000 W
- Maximum AC Output: Approximately 5,200 W for five minutes
- Output Waveform: Pure Sine Wave
- Battery Charger Rating: 70 A
- AC Transfer Rating: 50 A
Battery
- Brand: Hubble Lithium
- Model: AM2
- Nominal Voltage: 51 V
- Nominal Capacity: 5.5 kWh
- Battery Quantity: 1
- Battery Technology: Lithium
General
- Kit Reference: KIT-VIC-MULTIPLUS-II-5-48-BU
- System Type: Single-Phase Backup Power System
- Nominal Stored Energy: 5.5 kWh
- Typical Estimated Runtime at 1 kW: Approximately 5.5 hours under ideal conditions
- Remote Monitoring: Supported with included communication equipment
- Solar Compatibility: Solar equipment may be added as part of a correctly designed system
Important Installation Information
This system must be installed, configured, and commissioned by a qualified electrician or technician. The installer must verify system sizing, cable ratings, earthing, protection devices, battery communication, load requirements, and compliance with applicable South African electrical regulations.
The kit does not replace a project-specific electrical design. Additional equipment or materials may be required depending on the installation site, distribution board, cable routes, selected backup circuits, and applicable compliance requirements.
