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
3.5/5
For a 48 V off-grid home or backup system that needs 120/240 V from a single listed inverter-charger.
- 4,200 WContinuous
- 6,300 WSurge
- 120/240 V split-phaseOutput
- 30 WIdle draw
- YesUL listed
- 3 yearsWarranty
Check price at Battery Stuff$2,228.90Check price at Don Rowe$2,228.90
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Split-phase 120/240 V from one unit, so 240 V well pumps run without a second inverter
- Listed to UL 1741, which most permit inspectors expect
- 60 A charger with a lithium profile refills a 48 V bank from grid or generator
- Under 8 W in power-saving mode
Cons
- Programming needs the EVO-RC-PLUS remote, sold separately
- Cannot be paralleled to grow past 4,200 W
- 64 lb and hardwire only, so it is a fixed install
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | EVO-4248SP |
|---|---|
| Output | |
| Type | Pure sine wave inverter-charger |
| AC output | 120/240 V split-phase |
| Continuous power | 4,200 W |
| Surge power | 6,300 W for 30 s |
| DC input range | 36 to 68 V |
| Idle draw | 30 W (0.6 A at 48 V) |
| Power-saving draw | 8 W |
| Peak efficiency | 93% |
| Connections | |
| AC outlets | 0 |
| GFCI outlets | No |
| Hardwire terminal | Yes |
| USB ports | None |
| Transfer switch | Yes |
| Pass-through rating | 40 A |
| Charger | 60 A |
| Lithium charge profile | Yes |
| Parallel units | No |
| Control and build | |
| Remote | Optional extra |
| App | No |
| Safety listing | CSA listed; conforms to UL 1741 2nd Ed. and CAN/CSA C22.2 No. 107.1 |
| Design | Low-frequency (transformer) |
| Cooling | fan |
| Dimensions | 324 x 415 x 212 mm (12.8 x 16.3 x 8.3 in) |
| Weight | 64 lb |
| Warranty | 3 years |
Alternatives in this size
Ampinvt GP 6000W 48V Split Phase
A low-cost split-phase inverter-charger for an off-grid home that may add units later. Strong charger and parallel support, but no safety listing.
Amazon $685$685
Ampinvt FT 6000W 48V Split Phase
A budget low-frequency split-phase inverter-charger for an off-grid cabin with a 240 V generator. It handles heavy loads, but documentation is thin and it cannot be stacked.
Amazon $745$745
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