Victron Energy MultiPlus Inverter/Charger - 12V 500VA/20A
Victron Energy MultiPlus Inverter/Charger - 12V 500VA/20A
SKU:VMPLUS-500-20
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Victron Energy MultiPlus Inverter/Charger - 12V 500VA/20A
Model: MultiPlus 12/500/20-16 230V VE.Bus | MPN: PMP121500000
The Victron Energy MultiPlus 12V 500VA/20A Inverter/Charger is a versatile all-in-one power solution designed for reliable off-grid, marine, and vehicle applications. This compact unit seamlessly integrates a powerful true sine wave inverter, a sophisticated adaptive battery charger, and a high-speed AC transfer switch. It delivers stable 230VAC power from your 12V battery bank, ensuring sensitive electronics run smoothly, even during grid interruptions.
Engineered with Victron's proven full bridge plus toroidal transformer topology, the MultiPlus offers high peak power surge capacity and robust reliability. Its intelligent adaptive charging system can be configured for various battery types, optimising charge cycles to prolong battery life. With its integrated UPS function, the MultiPlus automatically takes over AC supply in less than 20 milliseconds upon grid failure, providing uninterrupted power to connected loads.
INTEGRATED POWER SOLUTION: Combines a 500VA pure sine wave inverter, 20A adaptive charger, and ultra-fast AC transfer switch in one compact unit.
Key Features
| ▶ Pure Sine Wave Output — Ensures compatibility with sensitive electronics and appliances. |
| ▶ Adaptive 4-Stage Charging — Optimises battery health and extends lifespan for various battery types (wet, AGM, GEL, Li-ion). |
| ▶ High-Speed AC Transfer Switch (UPS) — Provides uninterrupted power in under 20ms during grid or generator outages. |
| ▶ PowerAssist Functionality — Boosts limited shore or generator power by supplementing with battery power when needed. |
| ▶ Dual Charger Outputs — Includes a main output for the service battery and a trickle charge output for a starter battery. |
| ▶ Remote Monitoring & Control — Compatible with Victron GX devices and VRM portal for system management. |
| ▶ Parallel & Three-Phase Capability — Up to six units can operate in parallel for increased power, or three for three-phase output. |
| ▶ Robust & Reliable Design — Built with a toroidal transformer for proven durability and high surge power. |
Technical Specifications
| Parameter | Value |
|---|---|
| Inverter Input Voltage Range | 9.5 - 17.0 VDC |
| Output Voltage (Adjustable) | 230VAC ± 2% (240VAC) |
| Output Frequency (Adjustable) | 50Hz ± 0.1% (60Hz) |
| Continuous Output Power (25°C) | 500VA / 430W |
| Peak Power | 900W |
| Max. Efficiency | 90% |
| No-load Power Consumption | 6W (2W in Search Mode) |
| Charger Input Voltage Range | 187 - 265 VAC |
| Charge Current (Primary Output) | 20A |
| Charge Current (Secondary Output) | 1A |
| Transfer Switch Current Rating | 16A (@ 230 VAC) |
| Internal DC Fuse | 125A |
| Operating Temperature | -40°C to +65°C |
| Ingress Protection Rating | IP21 |
| Dimensions (L x W x H) | 311 x 182 x 100 mm |
| Weight | 4.5 kg |
Charging & Output Modes
| Mode/Function | Description |
|---|---|
| Adaptive 4-Stage Charging | Bulk, Absorption, Float, and Storage modes automatically adjust to battery condition for optimal charging and longevity. |
| Storage Mode | Reduces voltage to minimise gassing and corrosion, maintaining batteries during periods of inactivity. |
| Search Mode | Significantly reduces no-load power consumption by switching off the inverter when no load is detected, reactivating periodically. |
| UPS Functionality | Ensures continuous AC power supply by automatically switching to inverter mode upon grid disconnection (less than 20ms). |
| PowerControl & PowerAssist | Manages limited AC input current from shore or generator, and boosts capacity by drawing power from the battery when peak loads occur. |
Typical Applications
| Application | Description |
|---|---|
| Caravans & Motorhomes | Provides reliable 230V AC power for appliances and charges leisure batteries from shore power or generator. |
| Boats & Yachts | Ideal for marine environments, offering stable AC power and multi-stage battery charging from shore power. |
| Off-Grid Systems | Forms the core of small off-grid power systems, converting DC battery power to usable AC for homes or cabins. |
| Commercial Vehicles | Powers tools, equipment, and sensitive electronics in service vans, mobile workshops, and other commercial applications. |
Built-In Protection Functions
The Victron MultiPlus is equipped with comprehensive protection features to ensure safe and reliable operation. These include protection against output short circuit • power overload • battery voltage too high • battery voltage too low • over-temperature (due to overload or high ambient temperature) • 230V AC detected on inverter output (e.g., from another AC source) • and input voltage ripple too high. The unit also features a programmable alarm/signalling relay and a battery temperature sensor.
Common Questions
What is the difference between VA and W ratings?
VA (Volt-Amperes) is the apparent power, while W (Watts) is the real power. For resistive loads (like heaters), VA and W are often similar. For inductive or capacitive loads (like motors, refrigerators, or electronics), the VA rating will be higher than the W rating. The MultiPlus 500VA model provides 430W continuous output at 25°C. Always size your inverter based on the VA rating of your appliances, especially for motor-driven equipment.
Can this MultiPlus be used with lithium batteries?
Yes, the Victron MultiPlus features an adaptive battery management system that can be adjusted for various battery types, including Li-ion (Lithium-ion) batteries. Proper configuration via VE.Configure software or the VictronConnect app (with appropriate interface) is essential to match the charging parameters to your specific lithium battery's requirements.
Is remote monitoring and control possible?
Yes, the MultiPlus can be monitored and controlled remotely. When coupled with a Victron GX device (e.g., Cerbo GX) and connected to the internet, you can access your system locally (LAN) or remotely via the free Victron Remote Management (VRM) app and portal website. This allows for comprehensive system oversight and configuration adjustments from anywhere in the world.
What is the purpose of the secondary charger output?
The MultiPlus features two charger outputs: a primary full-power output (20A) for your main service battery bank and a secondary, limited current and voltage output (1A) specifically intended for trickle charging a starter battery. This ensures your engine's starter battery remains topped up without overcharging.
Installation Notes
- Cables are not supplied with the unit.
- For the DC (battery) connection, Victron recommends 16mm² cable protected with a 125A midi fuse for run lengths of up to 5m.
- The 230V AC output is designed to be hard-wired to sockets or other parts of an AC system.
- AC cable connections are made via G-ST18i connectors (included).
- Always consult a qualified electrician for AC cable sizing and circuit protection if in doubt.
Before You Buy
- Verify your total power requirements (VA and W) to ensure the 500VA capacity is sufficient for your intended loads.
- Confirm your battery bank voltage is 12V DC for compatibility with this model.
- Consider future expansion; up to six MultiPlus units can be paralleled for higher power output.
- Familiarise yourself with the installation requirements and safety guidelines.
- Professional installation by a qualified technician is highly recommended for optimal performance and safety.
Please verify all specifications and compatibility requirements before purchase. This Victron Energy MultiPlus Inverter/Charger comes with a 5-year manufacturer's warranty.
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