Victron MultiPlus-II 12/4k 120V
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 $1,105$1,105
3.9/5
A 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.
- 700 WContinuous
- 1,600 WSurge
- 0.6 AIdle draw
- NoUL listed
- 5 yearsWarranty
Check price at Amazon$347.37
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Inverter, 35 A charger and transfer switch in one box
- Draws under 0.6 A idle and under 0.2 A in search mode
- PowerAssist lets a small generator or 15 A pedestal run bigger loads
- Five-year warranty
Cons
- 700 W continuous is not enough for a microwave
- Not UL listed per Victron’s published documents
- Transfer switch is rated 16 A, so it suits 15 A or 20 A shore cords, not 30 A
The Victron MultiPlus 120V family
Every Victron MultiPlus 120V model we rank, smallest first. Ratings compare each against its own size.
| Model | Continuous | Rating | Price |
|---|---|---|---|
| Victron MultiPlus 12/500 120V | 430 W | 3.5/5 | $308.55 |
| Victron MultiPlus 12/800 120V (this one) | 700 W | 3.9/5 | $347.37 |
| Victron MultiPlus 12/1200 120V | 1,000 W | 3.9/5 | $487.05 |
| Victron MultiPlus 12/2000 120V | 1,600 W | 4.4/5 | $861.90 |
| Victron MultiPlus 12/3000 120V | 2,400 W | 4.3/5 | $1,168.75 |
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 | PMP121800100 |
|---|---|
| Output | |
| Type | Pure sine wave inverter-charger |
| Continuous power | 700 W |
| Surge power | 1,600 W |
| DC input range | 9.5 to 17 V |
| Idle draw | 0.6 A (7 W) |
| Power-saving draw | 0.2 A |
| Peak efficiency | 92% |
| Connections | |
| AC outlets | 0 |
| GFCI outlets | No |
| Hardwire terminal | Yes |
| USB ports | None |
| Transfer switch | Yes |
| Charger | 35 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 | 360 x 240 x 100 mm (14.17 x 9.45 x 3.94 in) |
| Weight | 14.1 lb |
| Warranty | 5 years |
Alternatives in this size
Victron MultiPlus-II 12/4k 2x120V
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.
DRSA $1,190$1,190
Victron MultiPlus 12/1200 120V
A compact all-in-one for small RVs and boats that want a coffee maker on battery and fast charging on shore power. Larger rigs on 30 A service should look at the 2000 VA models.
Amazon DRSA $487.05$487.05
Compare
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