Magnum MS4448PAE
For permitted 48 V off-grid or backup homes that need listed split-phase power and room to stack more units later.
Mr. Solar $2,239.20$2,239.20
The Magnum MS4448PAE is the better 48V inverter overall, rated 3.6 to 3.5. The Magnum MS4448PAE leads on efficiency. The Samlex EVO-4248SP costs $10.30 less ($2,228.90 vs $2,239.20).
Samlex EVO-4248SP
For a 48 V off-grid home or backup system that needs 120/240 V from a single listed inverter-charger.
Battery Stuff $2,228.90 Don Rowe $2,228.90$2,228.90
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 Magnum MS4448PAE for efficiency (94% 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 split-phase inverter-chargers 48V inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Magnum MS4448PAE | Samlex EVO-4248SP |
|---|---|---|
| Overall rating | 3.6/5 | 3.5/5 |
| Value 30% | 9 $0.51 per continuous watt | 4 $0.53 per continuous watt |
| Idle draw 15% | 100 25 W idle with nothing plugged in | 97 30 W idle with nothing plugged in |
| Safety listing 15% | 100 ETL listed to UL 1741 (1st Ed.) and CSA C22.2 No. 107.1-01 | 100 CSA listed; conforms to UL 1741 2nd Ed. and CAN/CSA C22.2 No. 107.1 |
| Warranty 15% | 50 3-year warranty | 50 3-year warranty |
| Features 15% | 60 optional remote, app add-on, 120/240 V split-phase, hardwire terminal | 65 optional remote, lithium charge profile, 120/240 V split-phase, hardwire terminal; no app |
| Efficiency 10% | 100 94% peak efficiency (maker rating) | 89 93% peak efficiency (maker rating) |
Specifications
| Magnum MS4448PAE | Samlex EVO-4248SP | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| AC output | 120/240 V split-phase | 120/240 V split-phase |
| Continuous power | 4,400 W | 4,200 W |
| Surge power | 8,500 W for 5 s | 6,300 W for 30 s |
| DC input range | 36 to 64 V | 36 to 68 V |
| Idle draw | 25 W (0.5 A at 48 V) | 30 W (0.6 A at 48 V) |
| Power-saving draw | 6 W | 8 W |
| Peak efficiency | 94% | 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 | 30 A | 40 A |
| Charger | 60 A | 60 A |
| Lithium charge profile | - | Yes |
| Parallel units | Yes | No |
| Control and build | ||
| Remote | Optional extra | Optional extra |
| App | Optional add-on | No |
| Display | No | - |
| Safety listing | ETL listed to UL 1741 (1st Ed.) and CSA C22.2 No. 107.1-01 | CSA listed; conforms to UL 1741 2nd Ed. and CAN/CSA C22.2 No. 107.1 |
| Design | Low-frequency (transformer) | Low-frequency (transformer) |
| Cooling | fan | fan |
| Dimensions | - | 324 x 415 x 212 mm (12.8 x 16.3 x 8.3 in) |
| Weight | 55 lb | 64 lb |
| Warranty | 3 years | 3 years |