Description
The Victron MultiPlus-II 12/3000/120-50 is the next generation of Victron’s flagship inverter/charger — 3000VA pure sine wave with a massive 120A built-in charger, 50A transfer switch, PowerAssist, and UPS function. UL listed for North American 120V installations. More power and faster charging than the MultiPlus 2000, this is the choice for serious RV, marine, and off-grid systems that need to run everything.
Key Features
- ✓ 3000VA / 2400W continuous — 50% more power than the MultiPlus 2000. Run AC, microwave, and power tools simultaneously.
- ✓ 120A built-in charger — the fastest Victron 12V charger. A 100Ah battery fills in under 1 hour from shore power.
- ✓ PowerAssist — boosts limited shore/generator with battery power. A 15A outlet acts like 30A+ during peak loads.
- ✓ UPS function (<20ms) — seamless switchover keeps all electronics running during power interruptions.
- ✓ 50A transfer switch — automatic switching between shore and inverter, built in.
- ✓ UL listed (120V) — certified for North American residential and marine installations.
- ✓ VE.Bus — full system integration with GX devices, MPPT controllers, battery monitors.
- ✓ 5-year Victron warranty — global service network.
Technical Specifications
| Inverter Output | 3000VA / 2400W continuous (120V AC pure sine wave) |
|---|---|
| Input Voltage | 12V DC |
| Charger Output | 120A max (adaptive 3-stage) |
| Transfer Switch | 50A (automatic) |
| UPS Switchover | <20ms |
| PowerAssist | Yes |
| Parallel | Yes (multiple units) |
| Communication | VE.Bus |
| Battery Types | LiFePO4, AGM, Gel, Flooded (configurable) |
| Part Number | PMP122305122 |
| UL Listed | Yes (120V North American market) |
| Warranty | 5 years (Victron standard) |
MultiPlus 2000 vs MultiPlus-II 3000
| Inverter power | 2000VA vs 3000VA |
|---|---|
| Continuous watts | 1600W vs 2400W |
| Charger current | 80A vs 120A |
| UL Listed | UL 458 vs UL (next-gen) |
| Best for | Moderate loads vs Full house power |
Applications
- Large RV/Motorhome — run rooftop AC, microwave, induction cooktop, and entertainment simultaneously
- Off-grid home — 3kVA covers most household loads with solar + battery
- Marine liveaboard — full galley power with shore power management
- Home backup — UPS function protects critical loads during grid outages
- Van life (professional builds) — induction cooking, AC, and work-from-van setups
Compatible Batteries
- Dakota Lithium 12V 100Ah — entry system, 2400W for ~30 minutes at full load
- Dakota Lithium DL+ 12V 135Ah — recommended. Full loads for ~45 minutes, typical RV use for 6+ hours.
- Dakota Lithium DL+ 12V 320Ah — premium. Full loads for ~1.5 hours, overnight off-grid.
- Multi-battery banks — 2-4× 100Ah in parallel for extended runtime with fast 120A recharge
FAQ
Why choose this over the MultiPlus 2000?
If you run an air conditioner, induction cooktop, or multiple large appliances simultaneously, the 3000VA handles loads the 2000VA cannot. The 120A charger also recharges batteries 50% faster than the 80A charger. Worth the upgrade for full-time RV, liveaboard, or off-grid use.
Can I run an RV air conditioner on this?
Yes — most RV rooftop AC units draw 1200-1800W running with a 2500-3500W startup surge. The 3000VA handles both running and starting. With the MultiPlus 2000VA, AC startup is borderline.
Do I still need a separate charger?
No. The 120A built-in charger handles all shore/generator charging. Add an Orion-Tr DC-DC for alternator charging while driving, and a SmartSolar MPPT for solar — but the MultiPlus-II handles all AC charging itself.
Warranty & Certifications
5-year Victron Energy warranty — global service network. UL listed for North American 120V installations. CE and ECE R10/6 certified. Part number PMP122305122.
