Victron MultiPlus-II 48/3000 120V
A well-rounded 48 V inverter-charger for an off-grid cabin, backup system or large RV. Low idle draw, real certifications and Victron’s system integration make it a safe choice.
Amazon DRSA $1,052.30$1,052.30
The Victron MultiPlus-II 48/3000 120V is the better 48V inverter overall, rated 4.3 to 3.5. The Victron MultiPlus-II 48/3000 120V leads on value, idle draw and efficiency. The Victron MultiPlus-II 48/3000 120V costs $1,261.70 less ($1,052.30 vs $2,314).
OutBack FXR3048A
For a dusty, humid or coastal off-grid site where a sealed inverter earns its keep. Built to last, but it costs more and idles higher than newer designs.
Northern Arizona Wind & Sun $2,314$2,314
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.
Which should you buy?
- Choose the Victron MultiPlus-II 48/3000 120V for value ($0.44 per continuous watt vs $0.77 per continuous watt), idle draw (11 W idle with nothing plugged in vs 34 W idle with nothing plugged in) and efficiency (95% peak efficiency (maker rating) vs 93% peak efficiency (maker rating)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 120V inverter-chargers 48V inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Victron MultiPlus-II 48/3000 120V | OutBack FXR3048A |
|---|---|---|
| Overall rating | 4.3/5 | 3.5/5 |
| Value 30% | 56 $0.44 per continuous watt | 4 $0.77 per continuous watt |
| Idle draw 15% | 99 11 W idle with nothing plugged in | 66 34 W idle with nothing plugged in |
| Safety listing 15% | 100 LabTest certified to UL 1741 and CSA C22.2 No. 107.1 (LC20469-1) and to UL 458 (LC20469-3) | 100 ETL listed to UL 1741 (2nd Ed. with supplement SA) |
| Warranty 15% | 100 5-year warranty | 100 5-year warranty |
| Features 15% | 50 optional remote, app add-on, lithium charge profile, hardwire terminal | 50 optional remote, app add-on, lithium charge profile, hardwire terminal |
| Efficiency 10% | 100 95% peak efficiency (maker rating) | 89 93% peak efficiency (maker rating) |
Specifications
| Victron MultiPlus-II 48/3000 120V | OutBack FXR3048A | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| AC output | 120 V | 120 V |
| Continuous power | 2,400 W | 3,000 W |
| Surge power | 5,500 W | 5,400 W for 5 s |
| DC input range | 38 to 66 V | 42 to 68 V |
| Idle draw | 11 W (0.2 A at 48 V) | 34 W (0.7 A at 48 V) |
| Power-saving draw | 2 W | 9 W |
| Peak efficiency | 95% | 93% |
| Connections | ||
| AC outlets | 0 | 0 |
| GFCI outlets | No | No |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | Yes |
| Pass-through rating | 50 A | 60 A |
| Charger | 35 A | 35 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | Yes | Yes |
| Control and build | ||
| Remote | Optional extra | Optional extra |
| App | Optional add-on | Optional add-on |
| Display | No | No |
| Safety listing | LabTest certified to UL 1741 and CSA C22.2 No. 107.1 (LC20469-1) and to UL 458 (LC20469-3) | ETL listed to UL 1741 (2nd Ed. with supplement SA) |
| Design | - | Low-frequency (transformer) |
| Cooling | fan | fan |
| Dimensions | 572 x 277 x 147 mm (22.5 x 10.9 x 5.8 in) | 13 x 8.25 x 16.25 in (33 x 21 x 41 cm) |
| Weight | 42 lb | 62 lb |
| Warranty | 5 years | 5 years |