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
The Victron MultiPlus-II 12/4k 120V 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 $745 less ($360 vs $1,105).
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 120V | EDECOA 3500W Pure Sine (12V) |
|---|---|---|
| Overall rating | 4.0/5 | 3.7/5 |
| Value 30% | 90 $0.33 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 120V | 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 | 631 x 277 x 164 mm (24.8 x 10.9 x 6.5 in) | 32 x 23 x 18 cm |
| Weight | 49 lb | 16.1 lb |
| Warranty | 5 years | - |