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
3.3/5
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.
- 5,000 WContinuous
- 15,000 WSurge
- 120/240 V split-phaseOutput
- NoUL listed
- 1 yearWarranty
Check price at Amazon$645
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 120/240 V split phase for a well pump or dryer, for about 13 cents per watt
- Low-frequency transformer handles motor starts well
- Charges from a 240 V generator and passes power through to the house
Cons
- 35 A charger is slow for a large 48 V bank
- Cannot run in parallel, and no published idle draw
- No safety listing and a one-year warranty
The Ampinvt FT Split Phase family
Every Ampinvt FT Split Phase model we rank, smallest first. Ratings compare each against its own size.
| Model | Continuous | Rating | Price |
|---|---|---|---|
| Ampinvt FT 5000W 48V Split Phase (this one) | 5,000 W | 3.3/5 | $645 |
| Ampinvt FT 6000W 48V Split Phase | 6,000 W | 3.3/5 | $745 |
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 | FT-5000W48V |
|---|---|
| Output | |
| Type | Pure sine wave inverter-charger |
| AC output | 120/240 V split-phase |
| Continuous power | 5,000 W |
| Surge power | 15,000 W |
| Peak efficiency | 90% |
| Connections | |
| Transfer switch | Yes |
| Charger | 35 A |
| Lithium charge profile | Yes |
| Parallel units | No |
| Control and build | |
| Remote | Optional extra |
| App | Optional add-on |
| Display | Yes |
| Safety listing | No |
| Design | Low-frequency (transformer) |
| Cooling | fan |
| Dimensions | 23.8 x 6.7 x 10.2 in |
| Weight | 70.5 lb |
| Warranty | 1 year |
Alternatives in this size
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
AIMS Power 12000W 48V Split Phase ETL
For a large off-grid or backup home on 48 V that needs a listed, single-box 12 kW split-phase inverter-charger at a lower price than premium brands.
Amazon $4,733.99$4,733.99
Compare
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