Description
Victron MultiPlus-II 24/3000/70-50 (UL 458)
The Victron MultiPlus-II 24/3000/70-50 (UL 458) is a 24V pure sine wave inverter/charger designed for RVs, marine systems, backup power, and off-grid energy installations. It combines a 3,000VA inverter with 2,400W of continuous output, a 70A battery charger, PowerControl, and PowerAssist technology. It can supplement limited shore, generator, or grid power with battery energy during peak demand, while its integrated 50A transfer switch enables rapid automatic switching to inverter power during an AC-source interruption. The unit also integrates with Victron GX devices for system monitoring and control.
KEY FEATURES
- 3,000VA Pure Sine Wave Inverter – Delivers up to 2,400W of continuous AC output at 25°C.
- 5,500W Peak Power – Handles short-duration surge loads for compatible equipment.
- 70A Battery Charger – Provides up to 70A of charging current for compatible 24V battery systems.
- 120V AC Output – Provides regulated 120VAC output at 60Hz.
- PowerControl – Limits AC input current to help prevent overload from shore power or generator sources.
- PowerAssist – Supplements external AC power with battery power when connected loads exceed available input capacity.
- 50A Transfer Switch – Automatically transfers between AC input and inverter operation.
- Fast AC Transfer – Victron specifies switching in less than 20ms during an AC-source failure or disconnection.
- 24V Battery System – Designed for 24VDC battery banks.
- External Current Sensor Support – Optional sensor extends PowerControl and PowerAssist input management up to 100A.
- Parallel Operation – Multiple units can be configured in parallel for increased system capacity.
- Victron GX Integration – Works with compatible Victron GX devices for monitoring, configuration, and control.
- Solar System Integration – Compatible with Victron solar charge controllers and supported AC-coupled systems.
- UL 458 Certified – Listed for applicable mobile and RV installations.
- Pure Sine Wave Output – Provides clean AC power for sensitive electronics and appliances.
- 5-Year Warranty – Big Battery lists a 5-year warranty for the product.
Specifications
| Brand | Victron Energy |
| Product Name | MultiPlus-II 24/3000/70-50 (UL 458) |
| Big Battery SKU | INV016 |
| Model | 24/3000/70-50 120V |
| Product Type | Inverter / Charger |
| Battery Voltage | 24VDC |
| DC Input Voltage Range | 19–33VDC |
| Rated Inverter Power | 3,000VA / 2,400W |
| Continuous Output at 40°C | 2,200W |
| Continuous Output at 65°C | 1,700W |
| Peak Power | 5,500W |
| Waveform | Pure Sine Wave |
| AC Output Voltage | 120VAC ±2% |
| Output Frequency | 60Hz ±0.1% |
| Maximum Inverter Efficiency | 94% |
| AC Input Voltage Range | 90–140VAC |
| AC Input Frequency Range | 45–65Hz |
| Maximum AC Input Current | 50A |
| Transfer Switch Rating | 50A |
| Transfer Time | <20ms |
| Maximum Battery Charge Current | 70A |
| PowerControl | Yes |
| PowerAssist | Yes |
| External Current Sensor | Optional, up to 100A input management |
| Parallel Operation | Yes |
| VE.Bus Communication | Yes |
| GX Device Integration | Yes |
| Solar Integration | Compatible with Victron solar charge controllers and supported AC-coupled systems |
| Battery Charge Absorption Voltage | 28.8V |
| Battery Charge Float Voltage | 27.6V |
| Battery Storage Voltage | 26.4V |
| Operating Temperature | -40°C to +60°C / -40°F to +140°F |
| Humidity | Maximum 95%, non-condensing |
| Protection Rating | IP22 |
| Battery Connection | M8 bolts |
| AC Connection | 35mm² / 2 AWG |
| Weight | 42 lbs |
| Depth | 5.8 in |
| Width | 10.9 in |
| Height | 21.1 in |
| Certification | UL 458 |
| Warranty | 5 Years |
APPLICATIONS
- RV and camper power systems
- Marine and boating applications
- Off-grid solar systems
- Backup power systems
- Hybrid energy-storage systems
- Cabins and remote properties
- Generator-supported battery systems
- 24V Big Battery HUSKY 2 INV systems
- Victron GX-based energy-management systems
