Description
⚠️ Stock availability and delivery time for products held in the supplier’s stock must be confirmed by phone.
Download the datasheet
Download the manual
Download the Declaration of Conformity
Victron Energy MultiPlus-II 48/6k5/100-50 combines a pure sine wave inverter and a battery charger rated at up to 100A in a single unit. It is designed for energy storage systems, backup power applications, and installations where grid or generator power must be intelligently supplemented with energy stored in batteries.
The model operates with 48V battery systems and delivers 6kW of continuous power at 25°C. For limited periods, it can support higher loads, reaching 8kW for up to one hour and a maximum output of 11kW for up to one minute, under the conditions specified by the manufacturer.
The MultiPlus-II can be used in grid-connected photovoltaic systems, off-grid installations, marine applications, mobile systems, and backup power solutions.
Important: The “6k5” designation is part of the model’s official name. The confirmed continuous output is 6kW at 25°C, while the 6.5kW rating is available only for a limited period.
Uninterruptible power for essential loads
The inverter’s main output operates as an uninterruptible AC power source. If the grid or generator is disconnected, the MultiPlus-II takes over the connected loads in less than 20ms.
This short transfer time allows computers, electronic equipment, and other critical loads to continue operating without noticeable interruption under normal conditions.
The product also features a second AC output. This output is powered only when an AC source is available at the MultiPlus-II input. It can be used for loads that should not discharge the battery, such as an electric water heater or other non-essential appliances.
PowerControl – protecting the grid or generator
The PowerControl function allows the maximum current available from the grid, generator, or shore power supply to be set.
The MultiPlus-II monitors the consumption of other equipment and uses only the remaining power to charge the batteries. This helps reduce the risk of overloading the AC power source.
PowerAssist – supplementing the available power
When the load temporarily exceeds the power available from the grid or generator, the PowerAssist function covers the difference using energy stored in the batteries.
Once consumption decreases, the available power is used to recharge the batteries. This function is useful in installations supplied by limited-capacity sources or in applications with temporary power-demand peaks.
Integrated 100A battery charger
The integrated charger delivers a maximum charging current of 100A at 25°C and 95A at 40°C.
The MultiPlus-II can be configured for use with several battery technologies, including lithium, lead-acid, and zinc-bromine batteries. The charging parameters must be adjusted according to the battery manufacturer’s specifications.
Integration into Victron ESS systems
The MultiPlus-II can serve as the main component of a Victron ESS – Energy Storage System.
It can be integrated with MPPT solar charge controllers, grid-connected photovoltaic inverters, energy meters, and monitoring and control devices from the Victron ecosystem.
Depending on the system configuration, an energy meter or external AC current sensor may be required to optimise self-consumption and control energy flow.
Parallel and three-phase operation
Up to six MultiPlus-II units can operate in parallel to achieve a higher power output.
Three identical units are required to create a three-phase system, with one unit assigned to each phase. The manufacturer also allows multiple three-phase sets to be connected in parallel, provided that Victron’s design and configuration requirements are followed.
All units used in a parallel or three-phase configuration must be the same model and must be configured accordingly.
Monitoring and control
The product is equipped with a VE.Bus communication port used for:
- Parallel operation
- Three-phase system configuration
- System component integration
- Configuration
- Monitoring and control
Bluetooth monitoring requires an optional VE.Bus Smart dongle. Remote access and monitoring through the Victron VRM portal require a compatible GX device and an internet connection.
Local configuration may require the Victron MK3-USB interface, depending on the configuration method used.
Integrated protection features
Victron Energy MultiPlus-II includes protection against:
- Output short circuits
- Overloads
- Excessively high battery voltage
- Excessively low battery voltage
- Excessive temperature
- The presence of 230VAC at the inverter output
- Excessively high input voltage ripple
The product has an IP21 protection rating and must be installed indoors, in an area protected from water, excessive humidity, and condensation, with adequate ventilation.
Main advantages
- Combines an inverter and battery charger in a single unit
- Keeps critical loads powered if the AC source fails
- Delivers 6kW of continuous power at 25°C
- Includes a battery charger rated at up to 100A
- Intelligently manages limited AC power sources
- Can temporarily supplement grid or generator power
- Supports integration into a Victron ESS system
- Can be used in parallel and three-phase configurations
- Supports local and remote monitoring with the appropriate accessories
- Suitable for residential, mobile, marine, and off-grid applications
Recommended applications
- Victron ESS energy storage systems
- Grid-connected photovoltaic systems
- Off-grid photovoltaic systems
- Backup power for critical loads
- Generator-powered installations
- Marine applications
- Motorhomes and other mobile applications
- Cabins and remote properties
- Systems with limited AC power sources
Technical specifications
| Specification |
Value |
| Manufacturer |
Victron Energy |
| Series |
MultiPlus-II |
| Model |
48/6k5/100-50 |
| Manufacturer product code |
PMP482605012 |
| Product type |
Inverter/charger |
| Nominal battery system voltage |
48V |
| DC input voltage range |
38–60V |
| Output voltage |
230VAC ±2% |
| Output frequency |
50Hz ±0.1% |
| Configurable frequency |
60Hz |
| Continuous output at 25°C |
6kW |
| Continuous output at 40°C |
5.7kW |
| Continuous output at 65°C |
4.6kW |
| Cold-start limited output |
6.5kW / 4 hours |
| Cold-start limited output |
8kW / 1 hour |
| Maximum output |
11kW / 1 minute |
| Maximum efficiency |
96% |
| No-load power consumption |
28W |
| No-load consumption in AES mode |
18W |
| No-load consumption in Search mode |
8W |
| Number of AC inputs |
1 |
| Number of AC outputs |
2 |
| Transfer switch |
50A |
| Maximum AC input current |
50A |
| AC input voltage range |
187–265VAC |
| AC input frequency |
45–65Hz |
| Maximum charging current at 25°C |
100A |
| Maximum charging current at 40°C |
95A |
| Absorption charging voltage |
57.6V |
| Float charging voltage |
55.2V |
| Storage mode voltage |
52.8V |
| PowerControl function |
Yes |
| PowerAssist function |
Yes |
| UPS function |
Yes, transfer time under 20ms |
| Auxiliary output |
Yes, 32A |
| External AC current sensor |
Optional, maximum 100A |
| Programmable relay |
Yes |
| Remote on/off |
Yes |
| Communication |
VE.Bus and 2 general-purpose ports |
| Parallel operation |
Yes, up to 6 units |
| Three-phase configuration |
Yes, with 3 identical units |
| Operating temperature |
-40°C to +65°C |
| Cooling |
Fan-assisted |
| Maximum humidity |
95%, non-condensing |
| Maximum altitude |
4,000m |
| Power derating at altitude |
1% for every 100m above 2,000m |
| Enclosure material |
Steel |
| Colour |
Blue, RAL 5012 |
| Protection rating |
IP21 |
| Battery connection |
M8 bolts |
| 230VAC connection |
13mm² / 6 AWG terminal block |
| Dimensions (H × W × D) |
644 × 320 × 150mm |
| Weight |
29kg |
Compatibility and integration
The MultiPlus-II 48/6k5/100-50 can be used with lithium, lead-acid, zinc-bromine, and other battery technologies, provided that the charger is configured according to the battery manufacturer’s specified parameters.
Compatibility must be verified for the exact battery model, BMS, communication protocol, and firmware version. Mentioning a battery technology in the Victron datasheet does not automatically confirm direct communication with every battery in that category.
The product can be integrated with:
- Victron MPPT solar charge controllers
- Grid-connected photovoltaic inverters
- Victron GX devices
- The Victron VRM portal
- Compatible energy meters
- External current sensors
- The MK3-USB interface
- The VE.Bus Smart dongle
- Victron ESS systems
The required accessories depend on the system configuration and should not be considered included unless this is explicitly confirmed.
Important warnings
- “6k5” is the commercial designation of this model, not its continuous output power. The continuous output is 6kW at 25°C.
- The 6.5kW, 8kW, and 11kW output levels are available only for limited periods and under the conditions specified by the manufacturer.
- The product does not include an integrated MPPT solar charge controller. A separate solar charge controller or a compatible photovoltaic configuration is required to connect photovoltaic panels directly.
- The IP21 protection rating indicates indoor use. The product must not be directly exposed to rain, water jets, or condensation.
- Battery compatibility and communication with the BMS must be verified before purchase.
- Charger parameters must be configured according to the battery manufacturer’s specifications.
- Parallel or three-phase operation requires identical units and configuration in accordance with Victron documentation.
- Bluetooth monitoring requires an optional VE.Bus Smart dongle.
- Monitoring through the VRM portal requires a compatible GX device and an internet connection.
- Local configuration may require an MK3-USB interface.
- The external AC current sensor, temperature sensor, GX devices, MK3-USB interface, and other accessories must not be presented as included unless confirmed.
- Installation, configuration, and commissioning must be carried out by qualified personnel.
- Cables, protection devices, and battery capacity must be sized according to the system configuration and the manufacturer’s requirements.
