SunGoldPower SPH6548P
A low-cost UL-listed split-phase inverter for off-grid homes and backup with a generator.
Amazon SunGoldPower $1,150$1,150
The SunGoldPower SPH6548P rates 3.7 among 120/240 V split-phase hybrid solar inverters; the MPP Solar LV6548V 500V rates 3.3 among 120 V ones. The MPP Solar LV6548V 500V costs $21 less ($1,129 vs $1,150).
MPP Solar LV6548V 500V
#5 in 120 VFull review
A low-cost 6.5 kW off-grid inverter for big solar arrays on 120 V circuits. Pair two for a 240 V home.
MPP Solar US store $1,129$1,129
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 | SunGoldPower SPH6548P | MPP Solar LV6548V 500V |
|---|---|---|
| Overall rating | 3.7/5 | 3.3/5 |
| Value 30% | 100 $177 per kW of continuous output | 75 $174 per kW of continuous output |
| Solar input 20% | 69 10,000 W of panels, 550 V max, 2 MPPTs | 54 8,000 W of panels, 500 V max, 2 MPPTs |
| Efficiency 20% | 45 93% peak efficiency | 32 91% peak efficiency |
| Features 15% | 75 UL 1741 listed, Wi-Fi add-on, parallel stacking, generator input, battery communication; no grid sell-back | 75 UL 1741 listed, Wi-Fi app, parallel stacking, battery communication; no grid sell-back |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
Specifications
| SunGoldPower SPH6548P | MPP Solar LV6548V 500V | |
|---|---|---|
| Output | ||
| Output voltage | 120/240 V split-phase | 120 V single-phase |
| Continuous output | 6,500 W | 6,500 W |
| Surge | 13,000 W | 13,000 W |
| Peak efficiency | 93% | 91% |
| Transfer time | 10 ms | 10 ms |
| Parallel units | Up to 6 units | Up to 6 units |
| Solar | ||
| Max PV power | 10,000 W | 8,000 W |
| Max PV voltage (Voc) | 550 V | 500 V |
| MPPT range | 150 to 450 V | 90 to 450 V |
| MPPT trackers | 2 | 2 |
| PV current per tracker | 18 A | 18 A |
| Runs without battery | Yes | Yes |
| Battery and grid | ||
| Battery voltage | 48 V | 48 V |
| Battery types | Lithium, lead-acid, user-defined | Lithium, lead-acid |
| Max charge current | 140 A | 120 A |
| AC charge current | 80 A | 120 A |
| Battery communication | Yes | Yes |
| Grid sell-back | No | No |
| Generator input | Yes | No |
| UL 1741 | Yes | Yes |
| Build | ||
| App monitoring | Optional add-on | Included |
| Enclosure | IP20 | - |
| Dimensions | 23 x 16.2 x 5.2 in | 147.4 x 432.5 x 553.6 mm |
| Weight | 42 lb | 40.6 lb |
| Warranty | 1 year | 1 year |
| Released | 2024-08 | 2020-10 |