OutBack Radian GS8048A
For an off-grid home or whole-house backup that needs 240 V loads from one inverter. A proven heavy transformer design with grid and generator inputs, at a high price.
Amazon $4,460$4,460
The OutBack Radian GS8048A is the better 48V inverter overall, rated 3.7 to 3.1. The OutBack Radian GS8048A leads on warranty, idle draw and efficiency. The AIMS Power 8000W 48V Split Phase ETL wins on features. The OutBack Radian GS8048A costs $20 less ($4,460 vs $4,480).
AIMS Power 8000W 48V Split Phase ETL
For an off-grid or backup home on 48 V that needs a listed split-phase inverter-charger with heavy surge at a lower price than Outback or Schneider.
Amazon $4,611.27 AIMS Power $4,480$4,480
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 OutBack Radian GS8048A for warranty (5-year warranty vs 3-year warranty), idle draw (34 W idle with nothing plugged in vs 100 W idle with nothing plugged in) and efficiency (93% peak efficiency (maker rating) vs 88% peak efficiency (maker rating)).
- Choose the AIMS Power 8000W 48V Split Phase ETL for features (optional remote, app add-on, lithium charge profile, 120/240 V split-phase, hardwire terminal, display vs optional remote, app add-on, lithium charge profile, 120/240 V split-phase, hardwire terminal).
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 | OutBack Radian GS8048A | AIMS Power 8000W 48V Split Phase ETL |
|---|---|---|
| Overall rating | 3.7/5 | 3.1/5 |
| Value 30% | 0 $0.56 per continuous watt | 0 $0.56 per continuous watt |
| Idle draw 15% | 95 34 W idle with nothing plugged in | 57 100 W idle with nothing plugged in |
| Safety listing 15% | 100 ETL listed to UL 1741 (2nd Ed. with supplement SA) and CSA C22.2 No. 107.1 | 100 ETL listed to UL 1741 and CSA C22.2 No. 107.1 |
| Warranty 15% | 100 5-year warranty | 50 3-year warranty |
| Features 15% | 70 optional remote, app add-on, lithium charge profile, 120/240 V split-phase, hardwire terminal | 80 optional remote, app add-on, lithium charge profile, 120/240 V split-phase, hardwire terminal, display |
| Efficiency 10% | 89 93% peak efficiency (maker rating) | 33 88% peak efficiency (maker rating) |
Specifications
| OutBack Radian GS8048A | AIMS Power 8000W 48V Split Phase ETL | |
|---|---|---|
| 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 | 8,000 W | 8,000 W |
| Surge power | 12,000 W for 5 s | 24,000 W for 20 s |
| DC input range | 40 to 64 V | 40 to 64 V |
| Idle draw | 34 W (0.7 A at 48 V) | 100 W (2.1 A at 48 V) |
| Power-saving draw | 10 W | 30 W |
| Peak efficiency | 93% | 88% |
| Connections | ||
| AC outlets | 0 | 2 |
| GFCI outlets | No | No |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | Yes |
| Pass-through rating | 50 A | 50 A |
| Charger | 115 A | 80 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | Yes | No |
| Control and build | ||
| Remote | Optional extra | Optional extra |
| App | Optional add-on | Optional add-on |
| Display | No | Yes |
| Safety listing | ETL listed to UL 1741 (2nd Ed. with supplement SA) and CSA C22.2 No. 107.1 | ETL listed to UL 1741 and CSA C22.2 No. 107.1 |
| Design | Low-frequency (transformer) | Low-frequency (transformer) |
| Cooling | fan | load-controlled fan |
| Dimensions | 28 x 16 x 8.75 in (71.1 x 40.6 x 22.2 cm) | 23.3 x 16.3 x 7.9 in |
| Weight | 125 lb | 132 lb |
| Warranty | 5 years | 3 years |