The long-running workhorse for 12 V RVs and boats that want to cook on battery power. The MultiPlus-II 12/3000 does the same job with lower idle draw for a little less money.
Amazon DRSA $1,168.75
The biggest 12 V MultiPlus-II, for 50 A motorhomes with large lithium banks that want air conditioning off-grid. Confirm the listing your installer needs, since no UL certificate is published.
- 3,400 WContinuous
- 6,000 WSurge
- 1.5 AIdle draw
- NoUL listed
- 5 yearsWarranty
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
- Accepts a full 50 A 120/240 V RV service
- 3,400 W continuous runs a roof air conditioner from a 12 V bank
- 160 A charger refills a 400 Ah lithium bank in under three hours
- Five-year warranty
- Inverts to 120 V only; 240 V loads need shore or generator power
- No UL certificate published for this size yet
- Draws 1.5 A idle with search mode off
The Victron MultiPlus-II 12V 120V family
Every Victron MultiPlus-II 12V 120V model we rank, smallest first. Ratings compare each against its own size.
| Model | Continuous | Rating | Price |
|---|---|---|---|
| Victron MultiPlus-II 12/3000 120V | 2,400 W | 4.5/5 | $1,006.40 |
| Victron MultiPlus-II 12/3000 2x120V | 2,400 W | 4.4/5 | $1,088 |
| Victron MultiPlus-II 12/4k 120V | 3,400 W | 4.0/5 | $1,105 |
| Victron MultiPlus-II 12/4k 2x120V (this one) | 3,400 W | 4.0/5 | $1,190 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | PMP122405200 |
|---|---|
| Output | |
| Type | Pure sine wave inverter-charger |
| Continuous power | 3,400 W |
| Surge power | 6,000 W for 2 s |
| DC input range | 9.5 to 17 V |
| Idle draw | 1.5 A (18 W) |
| Power-saving draw | 0.3 A |
| Peak efficiency | 93% |
| Connections | |
| AC outlets | 0 |
| GFCI outlets | No |
| Hardwire terminal | Yes |
| USB ports | None |
| Transfer switch | Yes |
| Charger | 160 A |
| Lithium charge profile | Yes |
| Parallel units | Yes |
| Control and build | |
| Remote | Optional extra |
| App | Optional add-on |
| Display | No |
| Safety listing | No |
| Cooling | fan |
| Dimensions | 650 x 275 x 165 mm (25.6 x 11 x 6.5 in) |
| Weight | 55 lb |
| Warranty | 5 years |
Alternatives in this size
For big 12 V lithium builds that want to run an air conditioner without moving to 24 or 48 V. Check that your inspector accepts it before buying, since no UL certificate is published.
DRSA $1,105A good fit for a small camper or boat on a 15 A shore cord that runs electronics, a fridge and lights. Pick the 12/1200 if you want a coffee maker.
Amazon $347.37Compare
Compare the Victron MultiPlus-II 12/4k 2x120V with any other 12V inverter →
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