OutBack VFXR3648A
For a cabin or off-grid home built around 120 V loads, with room to stack a second unit later. Rugged and code-friendly, but it idles high for its size.
Amazon $2,139$2,139
3.7/5
A compact inverter-charger for a small 48 V cabin or boat with a generator or shore feed. Pick a MultiPlus-II 48/3000 for more power and a UL listing.
- 1,600 WContinuous
- 3,500 WSurge
- 120 VOutput
- 11 WIdle draw
- NoUL listed
- 5 yearsWarranty
Check price at Northern Arizona Wind & Sun$785.42
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Inverter, 25 A charger and 50 A transfer switch in one box
- Idles at 11 W and 4 W in search mode
- PowerAssist lets a small generator run bigger loads by topping up from the battery
- Five-year warranty
Cons
- 1,600 W continuous: a microwave or coffee maker, but not both at once
- Not UL listed per Victron’s published documents
- 25 A charger is slow for a large 48 V bank
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 | PMP482200100 |
|---|---|
| Output | |
| Type | Pure sine wave inverter-charger |
| AC output | 120 V |
| Continuous power | 1,600 W |
| Surge power | 3,500 W |
| DC input range | 38 to 66 V |
| Idle draw | 11 W (0.2 A at 48 V) |
| Power-saving draw | 4 W |
| Peak efficiency | 95% |
| Connections | |
| AC outlets | 0 |
| GFCI outlets | No |
| Hardwire terminal | Yes |
| USB ports | None |
| Transfer switch | Yes |
| Pass-through rating | 50 A |
| Charger | 25 A |
| Lithium charge profile | Yes |
| Parallel units | Yes |
| Control and build | |
| Remote | Optional extra |
| App | Optional add-on |
| Display | No |
| Safety listing | No |
| Cooling | fan |
| Dimensions | 506 x 236 x 147 mm |
| Weight | 34.2 lb |
| Warranty | 5 years |
Alternatives in this size
Magnum MS4048-L
For a 48 V RV, cabin or backup system that needs a rugged, listed 120 V inverter-charger with big surge.
ResSupply $2,026 A1 Solar Store $2,531.49$2,026
VEVOR 6000W 48V Inverter Charger
A cheap low-frequency inverter-charger for a 48 V backup or off-grid system on 120 V. Documentation is thin and idle draw is high.
Amazon $539.90$539.90
Compare
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