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
The Victron MultiPlus-II 12/4k 2x120V rates 4.0 among inverter-chargers 12V inverters; the EDECOA 3500W Pure Sine (12V) rates 3.7 among over 2,000 W ones. The EDECOA 3500W Pure Sine (12V) costs $830 less ($360 vs $1,190).
EDECOA 3500W Pure Sine (12V)
#6 in Over 2,000 WFull review
A big, low-idle inverter for large off-grid banks at a modest price. The very short surge and lack of a listing count against it for air conditioners and permanent installs.
Amazon $379.99 EDECOA $360$360
Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different size classes (inverter-chargers and over 2,000 W), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Victron MultiPlus-II 12/4k 2x120V | EDECOA 3500W Pure Sine (12V) |
|---|---|---|
| Overall rating | 4.0/5 | 3.7/5 |
| Value 30% | 87 $0.35 per continuous watt | 93 $0.10 per continuous watt |
| Idle draw 15% | 73 1.5 A idle (about 18 W) with nothing plugged in | 100 0.5 A idle (about 6 W) with nothing plugged in |
| Safety listing 15% | 0 no UL 458 or UL 1741 listing stated | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 100 5-year warranty | 50 warranty not published (neutral score used) |
| Features 15% | 65 optional remote, app add-on, lithium charge profile, hardwire terminal | 50 remote included, hardwire terminal, display; no app |
| Efficiency 10% | 89 93% peak efficiency (maker rating) | 50 efficiency not published (neutral score used) |
Specifications
| Victron MultiPlus-II 12/4k 2x120V | EDECOA 3500W Pure Sine (12V) | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter |
| Continuous power | 3,400 W | 3,500 W |
| Surge power | 6,000 W for 2 s | 7,000 W for 100 ms |
| DC input range | 9.5 to 17 V | 9.5 to 15 V |
| Idle draw | 1.5 A (18 W) | 0.5 A (6 W) |
| Power-saving draw | 0.3 A | - |
| Peak efficiency | 93% | - |
| Connections | ||
| AC outlets | 0 | 4 |
| GFCI outlets | No | - |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | No |
| Charger | 160 A | - |
| Lithium charge profile | Yes | - |
| Parallel units | Yes | No |
| Control and build | ||
| Remote | Optional extra | Included |
| App | Optional add-on | No |
| Display | No | Yes |
| Safety listing | No | No |
| Cooling | fan | load-controlled fan |
| Dimensions | 650 x 275 x 165 mm (25.6 x 11 x 6.5 in) | 32 x 23 x 18 cm |
| Weight | 55 lb | 16.1 lb |
| Warranty | 5 years | - |