Overview
The Victron Energy MultiPlus 12/3000 is the world's best-known inverter/charger: a 3000VA pure sine wave inverter, adaptive 120A battery charger and fast 50A transfer switch in one compact UL-listed unit. PowerAssist technology boosts weak shore or generator power instead of tripping it — the reason it dominates marine, RV and off-grid installations.
Key Features
- 3000VA / 2400W continuous pure sine output at 25°C (2200W at 40°C)
- Adaptive 4-stage 120A battery charger with lithium & lead-acid profiles
- PowerAssist & PowerControl — supplements small generators and shore power
- UL 1741 / UL 458 listed; VE.Bus parallel and split-phase capable
- 6000W peak power for motor starting
- 5-year manufacturer warranty
Technical Specifications
| Continuous Output (25°C) | 3000 VA / 2400 W |
| Continuous Output (40°C) | 2200 W |
| Peak Power | 6000 W |
| DC Input | 12 V (9.5–17 V) |
| Battery Charger | 120 A, 4-stage adaptive |
| Transfer Switch | 50 A |
| Certification | UL 1741, UL 458, CSA C22.2 |
| Dimensions (H×W×D) | 14.3 × 10.2 × 8.6 in (362 × 258 × 218 mm) |
| Unit Weight | 40 lb (19 kg) |
| Warranty | 5 years |
Specifications verified against the manufacturer's official documentation: Victron Energy official MultiPlus 2kVA/3kVA datasheet.
Applications
The go-to power source for mobile and marine watermakers, remote dosing systems and 12V pump installations. ForeverPure stocks the full Victron ecosystem — ask about SmartSolar MPPT and battery monitoring bundles.
Frequently Asked Questions
What does PowerAssist actually do?
When shore or generator power is limited, the MultiPlus adds inverter power from the battery on top of it — so a 2kW generator can momentarily run 5kW of load without stalling.
Will it run a watermaker or pump?
Yes — 2400W continuous and 6000W peak start most 12V-system-sized pumps and small RO high-pressure pumps. Send us your motor specs and we'll verify.
Can two units make 120/240V split phase?
Yes. Two MultiPlus units can be configured in split-phase (or parallel for more power) over VE.Bus.
Does it charge lithium batteries?
Yes — the adaptive charger includes LiFePO4 profiles and integrates with Victron BMS products for full closed-loop control.
Is this product in stock?
Availability changes frequently. Contact us at 408-969-2688 or sales@foreverpureplace.com for current stock and lead time — most items ship within days.
How is this item shipped?
It ships fully insured via UPS/FedEx ground from our California warehouse. Expedited shipping is available at checkout or by request.
Documents & Downloads
- 📄 Official Datasheet — MultiPlus 2kVA/3kVA 120V (PDF)
- 📖 Quick Install Guide — MultiPlus 3000VA-50A (PDF)
All documents open directly from the manufacturer's official website.
