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Buy the Victron Energy MultiPlus-II 12/3000/120 inverter charger — 3000VA pure sine wave with PowerAssist and 20ms transfer for RV, marine and off-grid power — now $99.99 online.
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Categories : Inverters
SKU : POW-INV-043
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Victron Energy MultiPlus-II 12/3000/120 Inverter Charger (3000VA 12V, 2x120V Pure Sine Wave) is the original professional inverter/charger with PowerAssist technology for RV, marine, vehicle and land-based off-grid systems. Current price: $99.99 (compare-at $910, 89% off) — buy online now while this deal lasts.
The 2x120V split output powers two separate 120V legs — ideal for North American 50A RVs. Wire shore/generator input through the AC input, split the two output legs to your panel's L1/L2 circuits, and connect the 12V battery bank with properly sized cables and fusing.
Yes — set the AC input current limit to 30A and PowerAssist will supplement limited shore power with battery energy instead of tripping the pedestal.
If L1 shows overload at low load, check that heavy appliances aren't stacked on one leg, verify the input current limit setting, and confirm the unit's firmware is current. PowerAssist draws battery power to cover peaks before the 120A charger or output limit is exceeded.
Versus the standard MultiPlus, the MultiPlus-II adds dual AC output and built-in 30mA ground-relay compliance for grid-tie-ready installs. Versus lower VA models, the 3000VA/120A version runs heavier loads.
89% off — save over $810, plus 12% coupon OUTPOST12 and free shipping over $45. This is the deal of the category.
3000VA pure sine wave inverter charger with 2x120V split output for just $99.99
PowerAssist prevents overload of limited AC sources; 20ms transfer keeps power uninterrupted
89% off compare-at price plus 12% coupon savings with code OUTPOST12
Model: MultiPlus-II 12/3000/120
Output: 2x120V split-phase pure sine wave
Capacity: 3000VA / 12V DC
Scalability: Up to 6 parallel units; 3-phase capable
Product Type: Pure sine wave inverter charger
Transfer Time: 20ms
AC Input Limit: 120A charger, adjustable input current limit
Seller: PowerHaven Outpost
MPN: MultiPlus-II 12/3000/120
3000VA pure sine wave, 2x120V split output, 20ms uninterrupted transfer, and PowerAssist to prevent overload of generators and shore power.
RV, marine, vehicle and land-based off-grid systems needing seamless backup power and parallel/3-phase scalability up to 6 units.
Dual AC output and grid-ready compliance set it apart from the standard MultiPlus. At 89% off with coupon OUTPOST12, this is the most affordable path to original Victron performance.
Feed shore/generator power into the AC input, connect the two 120V output legs to your L1/L2 distribution circuits, and cable the 12V battery bank with proper fusing. Set the input current limit to match your shore pedestal.
It is a split 120V output providing two separate legs (L1/L2), ideal for North American 50A RVs and dual-leg loads.
Yes — set the AC input current limit to 30A; PowerAssist supplements with battery power when demand exceeds shore capacity.
Check for appliances stacked on one leg, verify your input current limit setting, and update firmware. PowerAssist should cover peaks with battery energy before overload occurs.
Buy online at PowerHaven Outpost for $99.99 — 89% off the $910 compare-at price — with coupon OUTPOST12 for an extra 12% and free shipping over $45.
The 20ms transfer is so fast my desktop computers and NAS don't even blink when shore power drops. PowerAssist handles my microwave plus well pump on a 30A circuit without tripping. This inverter is the heart of my system now.
Pure sine wave, quiet operation, and the ability to supplement shore power with battery is a game changer at campgrounds with weak pedestals. VictronConnect makes tuning easy too.
Handles 3000VA loads without breaking a sweat, though it needs good ventilation. Under sustained high draw the fan is noticeable. No functional complaints at all.
Paired with my MPPT controllers and Cerbo GX, the MultiPlus-II manages everything automatically. Grid charging, generator support, seamless switchover — it just handles it all. Two years in with zero issues.
Once configured it's excellent, but initial setup with the 2x120V split phase took real research. If you're not comfortable with electrical wiring, hire a professional.
Clean power, instant transfer, total reliability.
Unit powers my loads fine but the internal fan has an annoying rattle from day one. Support was responsive but I shouldn't need a warranty claim on a premium inverter.
