EG4 6000XP
For off-grid homes and cabins that need 240 V at a low price per kW. It does the job of two 120 V inverters in one box, but can’t export to the grid.
Signature Solar $1,499.99 Shop Solar Kits $1,499.99$1,499.99
The EG4 6000XP rates 3.9 among 120/240 V split-phase hybrid solar inverters; the SunGoldPower SPH504880A rates 3.2 among 120 V ones. The SunGoldPower SPH504880A costs $910.99 less ($589 vs $1,499.99).
SunGoldPower SPH504880A
#7 in 120 VFull review
The budget version of the SPH5048P for single-unit 120 V systems that will never need 240 V.
Amazon SunGoldPower $589$589
Prices were last checked October 23, 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 output classes (120/240 V split-phase and 120 V), and each is scored against the reference points for its own class, so a rating says how well each does among its own output peers. How we rank explains each factor.
| Factor weight | EG4 6000XP | SunGoldPower SPH504880A |
|---|---|---|
| Overall rating | 3.9/5 | 3.2/5 |
| Value 30% | 90 $250 per kW of continuous output | 94 $118 per kW of continuous output |
| Solar input 20% | 58 8,000 W of panels, 480 V max, 2 MPPTs | 40 5,500 W of panels, 500 V max, 1 MPPT |
| Efficiency 20% | 65 93% peak efficiency, 50 W idle | 25 90% peak efficiency |
| Features 15% | 75 UL 1741 listed, Wi-Fi app, parallel stacking, battery communication; no grid sell-back | 50 UL 1741 listed, Wi-Fi add-on, battery communication; no parallel |
| Warranty 15% | 44 5-year warranty | 0 1-year warranty |
Specifications
| EG4 6000XP | SunGoldPower SPH504880A | |
|---|---|---|
| Output | ||
| Output voltage | 120/240 V split-phase | 120 V single-phase |
| Continuous output | 6,000 W | 5,000 W |
| Surge | 12,000 W | 10,000 W |
| Peak efficiency | 93% | 90% |
| Idle draw | 50 W | - |
| Transfer time | 15 ms | 10 ms |
| Parallel units | Up to 16 units | No |
| Solar | ||
| Max PV power | 8,000 W | 5,500 W |
| Max PV voltage (Voc) | 480 V | 500 V |
| MPPT range | 120 to 385 V | 120 to 450 V |
| MPPT trackers | 2 | 1 |
| PV current per tracker | 17 A | - |
| Runs without battery | Yes | Yes |
| Battery and grid | ||
| Battery voltage | 48 V | 48 V |
| Battery types | Lithium, lead-acid | Lithium, lead-acid |
| Max charge current | 125 A | - |
| AC charge current | 115 A | 40 A |
| Battery communication | Yes | Yes |
| Grid sell-back | No | No |
| Generator input | No | No |
| UL 1741 | Yes | Yes |
| Build | ||
| App monitoring | Included | Optional add-on |
| Enclosure | IP20 | - |
| Dimensions | 18 x 25.5 x 5.25 in | 426 x 322 x 126 mm |
| Weight | 52.9 lb | 25.4 lb |
| Warranty | 5 years | 1 year |
| Released | 2023-10 | 2025-06 |