Rich Solar NOVA 6K
#4 in 120 VFull review
For a 120 V off-grid cabin or RV-style system that needs a UL-listed unit with a US support line. Similar hardware sells for much less under other brands.
Rich Solar $1,299.99$1,299.99
The Rich Solar NOVA 6K is the better hybrid solar inverter overall, rated 3.3 to 3.2. The Rich Solar NOVA 6K leads on features, warranty and solar input. The SunGoldPower SPH504880A wins on value. The SunGoldPower SPH504880A costs $710.99 less ($589 vs $1,299.99).
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.
Which should you buy?
- Choose the Rich Solar NOVA 6K for features (UL 1741 listed, Wi-Fi app, parallel stacking, battery communication; no grid sell-back vs UL 1741 listed, Wi-Fi add-on, battery communication; no parallel), warranty (3-year warranty vs 1-year warranty) and solar input (8,000 W of panels, 550 V max, 2 MPPTs vs 5,500 W of panels, 500 V max, 1 MPPT).
- Choose the SunGoldPower SPH504880A for value ($118 per kW of continuous output vs $200 per kW of continuous output).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 120 V hybrid solar inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Rich Solar NOVA 6K | SunGoldPower SPH504880A |
|---|---|---|
| Overall rating | 3.3/5 | 3.2/5 |
| Value 30% | 67 $200 per kW of continuous output | 94 $118 per kW of continuous output |
| Solar input 20% | 54 8,000 W of panels, 550 V max, 2 MPPTs | 40 5,500 W of panels, 500 V max, 1 MPPT |
| Efficiency 20% | 32 91% peak efficiency | 25 90% peak efficiency |
| Features 15% | 80 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% | 22 3-year warranty | 0 1-year warranty |
Specifications
| Rich Solar NOVA 6K | SunGoldPower SPH504880A | |
|---|---|---|
| Output | ||
| Output voltage | 120 V single-phase | 120 V single-phase |
| Continuous output | 6,500 W | 5,000 W |
| Surge | 13,000 W | 10,000 W |
| Peak efficiency | 91% | 90% |
| Transfer time | 10 ms | 10 ms |
| Parallel units | Up to 6 units | No |
| Solar | ||
| Max PV power | 8,000 W | 5,500 W |
| Max PV voltage (Voc) | 550 V | 500 V |
| MPPT range | 90 to 450 V | 120 to 450 V |
| MPPT trackers | 2 | 1 |
| PV current per tracker | 18 A | - |
| Runs without battery | - | Yes |
| Battery and grid | ||
| Battery voltage | 48 V | 48 V |
| Battery types | Lithium, AGM, gel, flooded | Lithium, lead-acid |
| Max charge current | 120 A | - |
| AC charge current | 120 A | 40 A |
| Battery communication | Yes | Yes |
| Grid sell-back | No | No |
| Generator input | - | No |
| UL 1741 | Yes | Yes |
| Build | ||
| App monitoring | Included | Optional add-on |
| Dimensions | 147.4 x 432.5 x 575.6 mm | 426 x 322 x 126 mm |
| Weight | 40.6 lb | 25.4 lb |
| Warranty | 3 years | 1 year |
| Released | 2024-09 | 2025-06 |