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 $1,129The MPP Solar LV6548V 500V rates 3.3 among 120 V hybrid solar inverters; the MPP Solar LVX6048WP rates 3.1 among 120/240 V split-phase ones.

A 6 kW outdoor split-phase hybrid for off-grid homes and garages. Grid-tied buyers should pick a UL-listed unit.
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 V and 120/240 V split-phase), 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 | MPP Solar LV6548V 500V | MPP Solar LVX6048WP |
|---|---|---|
| Overall rating | 3.3/5 | 3.1/5 |
| Value 30% | 75 $174 per kW of continuous output | 50 no current price (neutral score used) |
| Solar input 20% | 54 8,000 W of panels, 500 V max, 2 MPPTs | 55 7,500 W of panels, 600 V max, 2 MPPTs |
| Efficiency 20% | 32 91% peak efficiency | 32 91% peak efficiency |
| Features 15% | 75 UL 1741 listed, Wi-Fi app, parallel stacking, battery communication; no grid sell-back | 70 Wi-Fi app, parallel stacking, grid sell-back, generator input, battery communication; not UL 1741 listed |
| Warranty 15% | 0 1-year warranty | 11 2-year warranty |
Specifications
| MPP Solar LV6548V 500V | MPP Solar LVX6048WP | |
|---|---|---|
| Output | ||
| Output voltage | 120 V single-phase | 120/240 V split-phase |
| Continuous output | 6,500 W | 6,000 W |
| Surge | 13,000 W | - |
| Peak efficiency | 91% | 91% |
| Transfer time | 10 ms | 15 ms |
| Parallel units | Up to 6 units | Up to 6 units |
| Solar | ||
| Max PV power | 8,000 W | 7,500 W |
| Max PV voltage (Voc) | 500 V | 600 V |
| MPPT range | 90 to 450 V | 120 to 550 V |
| MPPT trackers | 2 | 2 |
| PV current per tracker | 18 A | 15 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 | 120 A | 120 A |
| AC charge current | 120 A | 120 A |
| Battery communication | Yes | Yes |
| Grid sell-back | No | Yes |
| Generator input | No | Yes |
| UL 1741 | Yes | No |
| Build | ||
| App monitoring | Included | Included |
| Enclosure | - | IP65 |
| Dimensions | 147.4 x 432.5 x 553.6 mm | 215.5 x 515 x 700 mm |
| Weight | 40.6 lb | 90.4 lb |
| Warranty | 1 year | 2 years |
| Released | 2020-10 | 2022-02 |