The Victron MultiPlus-II 48/5000 120V rates 4.4 among 120V inverter-chargers 48V inverters; the Magnum MS4448PAE rates 3.6 among split-phase inverter-chargers ones. The Victron MultiPlus-II 48/5000 120V costs $931.88 less ($1,307.32 vs $2,239.20).
A strong 48 V inverter-charger for an off-grid home or whole-house backup on 120 V. It handles big loads, charges fast from a generator, and carries the certifications inspectors ask for.
Amazon Northern Arizona Wind & Sun $1,307.32For permitted 48 V off-grid or backup homes that need listed split-phase power and room to stack more units later.
Mr. Solar $2,239.20Prices 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.
These two sit in different size classes (120V inverter-chargers and split-phase inverter-chargers), 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 48/5000 120V | Magnum MS4448PAE |
|---|---|---|
| Overall rating | 4.4/5 | 3.6/5 |
| Value 30% | 73 $0.33 per continuous watt | 9 $0.51 per continuous watt |
| Idle draw 15% | 93 15 W idle with nothing plugged in | 100 25 W idle with nothing plugged in |
| Safety listing 15% | 100 LabTest certified to UL 1741 and CSA C22.2 No. 107.1 (LC22395-1) and to UL 458 (LC26-6384-1) | 100 ETL listed to UL 1741 (1st Ed.) and CSA C22.2 No. 107.1-01 |
| Warranty 15% | 100 5-year warranty | 50 3-year warranty |
| Features 15% | 50 optional remote, app add-on, lithium charge profile, hardwire terminal | 60 optional remote, app add-on, 120/240 V split-phase, hardwire terminal |
| Efficiency 10% | 100 96% peak efficiency (maker rating) | 100 94% peak efficiency (maker rating) |
| Victron MultiPlus-II 48/5000 120V | Magnum MS4448PAE | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| AC output | 120 V | 120/240 V split-phase |
| Continuous power | 4,000 W | 4,400 W |
| Surge power | 9,000 W | 8,500 W for 5 s |
| DC input range | 38 to 66 V | 36 to 64 V |
| Idle draw | 15 W (0.3 A at 48 V) | 25 W (0.5 A at 48 V) |
| Power-saving draw | 3 W | 6 W |
| Peak efficiency | 96% | 94% |
| Connections | ||
| AC outlets | 0 | 0 |
| GFCI outlets | No | No |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | Yes |
| Pass-through rating | 95 A | 30 A |
| Charger | 70 A | 60 A |
| Lithium charge profile | 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 (LC22395-1) and to UL 458 (LC26-6384-1) | ETL listed to UL 1741 (1st Ed.) and CSA C22.2 No. 107.1-01 |
| Design | - | Low-frequency (transformer) |
| Cooling | fan | fan |
| Dimensions | 676 x 330 x 164 mm (26.6 x 13.0 x 6.5 in) | - |
| Weight | 71 lb | 55 lb |
| Warranty | 5 years | 3 years |
