Victron MultiPlus-II 48/4k5/55-32 230V
by Victron Energy
Introduction
The Victron MultiPlus-II 48/4k5/55-32 is the newest high-performance hybrid inverter/charger designed for serious residential solar, off-grid, and backup power systems across New Zealand and Australia. Combining a powerful pure sine wave inverter, ultra-fast UPS transfer switch and a massive 55A smart battery charger, this model is engineered to run whole-home loads while integrating seamlessly with modern solar and lithium battery systems.
This unit is ESS-ready, generator-friendly and fully remote-configurable, making it ideal for advanced hybrid energy installations.
Key Features
6.5kVA Pure Sine Wave Inverter
Delivers clean, stable power for both sensitive electronics and heavy household loads.
• Continuous output: 4000W
• Surge capacity: 7,000W+
• Suitable for whole-home backup and off-grid systems
Massive 55A Smart Battery Charger
High-capacity charger designed for large lithium and lead-acid battery banks.
• Adaptive 4-stage smart charging
• Fully programmable charging voltages
• Ideal for large solar storage systems
• Fast battery recovery after outages
Ultra-Fast UPS Transfer Switch (<20ms)
Instant changeover keeps critical loads running during power cuts.
Perfect for:
• Homes and offices
• Servers & IT equipment
• Medical equipment
• Refrigeration & security systems
PowerAssist & PowerControl Technology
PowerAssist boosts limited grid or generator power using battery energy.
PowerControl prevents tripping breakers on limited shore or generator supply.
Works seamlessly with Victron MPPT solar controllers and GX monitoring devices.
Parallel & 3-Phase Scalability
• Parallel operation: up to 6 units
• 3-phase systems supported
• Scalable for large homes, farms & commercial installs
Future-proof system expansion.
Remote Monitoring & Configuration
Configure and monitor your system from anywhere.
• Bluetooth setup via VictronConnect
• Remote monitoring via Victron VRM Portal (with GX device)
• Firmware updates & diagnostics
• Full system control and alerts
Inverter Specifications
Battery Voltage: 48V DC
Continuous Power: 4000w
Peak Power: 7,000W surge (1 minute)
Output Voltage: 230V AC ±2%
Output Frequency: 50Hz ±0.1%
Waveform: Pure sine wave
Maximum Efficiency: Up to 96%
No-load Consumption: ~20W (Search mode: ~8W)
Charger Specifications
AC Input Range: 187–265V AC, 45–65Hz
Maximum Charge Current: 55A
Charging Algorithm: Adaptive 4-stage
Supported Batteries: Lithium, Lead -acid, Zinc -Bromine and more
Typical Charge Voltages (48V):Absorption: 57.6V-Float: 55.2V-Storage: 52.8V
All voltages fully configurable.
AC Transfer Switch
Transfer Current: 32ATransfer Time: <20ms (UPS level)
Ensures uninterrupted power during outages.
Environmental & Physical
Operating Temperature: −40°C to +65°C
Cooling: Variable speed fan assisted
Protection:
Overload
Short circuit
Over-temperature
Low/high battery voltage
Protection Class: IP22
Dimensions: 590 × 275 × 149 mm
Weight: approx. 22 kg
Ideal Applications
• Whole-home solar battery systems• Hybrid grid-backup installations• Off-grid houses and cabins• Farms and rural properties• Workshops and small businesses• Marine and mobile energy systems
Why Choose the MultiPlus-II 48/4k5/55-32?
✔ Designed for modern lithium solar systems
✔ Powerful enough for full household loads
✔ Generator-friendly PowerAssist technology
✔ Remote monitoring and control
✔ Scalable and future-proof
A professional-grade inverter/charger built for reliable energy independence in demanding Australian and New Zealand conditions.