OutBack FXR3048A
For a dusty, humid or coastal off-grid site where a sealed inverter earns its keep. Built to last, but it costs more and idles higher than newer designs.
Northern Arizona Wind & Sun $2,314$2,314
The OutBack FXR3048A rates 3.5 among 120V inverter-chargers 48V inverters; the Sigineer APC3048D rates 3.0 among split-phase inverter-chargers ones. The Sigineer APC3048D costs $1,515 less ($799 vs $2,314).
Sigineer APC3048D
A heavy, surge-strong 3,000 W 48 V inverter-charger for off-grid or backup systems on a budget, where a UL listing is not required.
Sigineer $799$799
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.
Scores side by side
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 | OutBack FXR3048A | Sigineer APC3048D |
|---|---|---|
| Overall rating | 3.5/5 | 3.0/5 |
| Value 30% | 4 $0.77 per continuous watt | 63 $0.27 per continuous watt |
| Idle draw 15% | 66 34 W idle with nothing plugged in | 80 60 W idle with nothing plugged in |
| Safety listing 15% | 100 ETL listed to UL 1741 (2nd Ed. with supplement SA) | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 100 5-year warranty | 0 1-year warranty |
| Features 15% | 50 optional remote, app add-on, lithium charge profile, hardwire terminal | 60 optional remote, lithium charge profile, 120/240 V split-phase, hardwire terminal; no app |
| Efficiency 10% | 89 93% peak efficiency (maker rating) | 33 88% peak efficiency (maker rating) |
Specifications
| OutBack FXR3048A | Sigineer APC3048D | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| AC output | 120 V | 120/240 V split-phase |
| Continuous power | 3,000 W | 3,000 W |
| Surge power | 5,400 W for 5 s | 9,000 W for 20 s |
| DC input range | 42 to 68 V | 40 to 64 V |
| Idle draw | 34 W (0.7 A at 48 V) | 60 W (1.2 A at 48 V) |
| Power-saving draw | 9 W | 15 W |
| Peak efficiency | 93% | 88% |
| Connections | ||
| AC outlets | 0 | 0 |
| GFCI outlets | No | No |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | Yes |
| Pass-through rating | 60 A | 30 A |
| Charger | 35 A | 30 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | Yes | No |
| Control and build | ||
| Remote | Optional extra | Optional extra |
| App | Optional add-on | No |
| Display | No | No |
| Safety listing | ETL listed to UL 1741 (2nd Ed. with supplement SA) | No |
| Design | Low-frequency (transformer) | Low-frequency (transformer) |
| Cooling | fan | fan |
| Dimensions | 13 x 8.25 x 16.25 in (33 x 21 x 41 cm) | 20 x 8.5 x 7 in (508 x 222 x 180 mm) |
| Weight | 62 lb | 49 lb |
| Warranty | 5 years | 1 year |