PowMr FU12-248P
For off-grid or backup homes that need a lot of split-phase power and solar input at the lowest price per kW. It has a UL listing but a short warranty.
Amazon PowMr $1,069$1,069
3.7/5
For off-grid cabins and small homes that need 240 V loads on a budget. One unit covers a modest house and more can be added later.
- 6 kWOutput
- 48 VBattery
- 9,000 WSolar input
- 2 yearsWarranty
Check price at AmazonCheck price at ECO-WORTHY$789.99
Price checked October 23, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Makes 120/240 V from one unit at a low price per kW
- Takes 9,000 W of panels at up to 500 V, so long strings keep wiring light
- UL 1741 listed, with Wi-Fi and Bluetooth monitoring built in
- Up to six units in parallel as loads grow
Cons
- Single solar tracker, so panels facing different directions share one input
- Off-grid only, and grid and generator share one AC input
- Indoor IP20 enclosure needs a dry, sheltered spot
The ECO-WORTHY Liber family
Every ECO-WORTHY Liber model we rank, smallest first. Ratings compare each against its own output.
| Model | Output | Rating | Price |
|---|---|---|---|
| ECO-WORTHY Liber 6kP (this one) | 6 kW | 3.7/5 | $789.99 |
| ECO-WORTHY Liber 10KP | 10 kW | 3.6/5 | $1,509.99 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its output. How we rank explains each one.
Specifications
| Model number | ECO-INV-48V6000WES01 |
|---|---|
| Output | |
| Output voltage | 120/240 V split-phase |
| Continuous output | 6,000 W |
| Surge | 12,000 W |
| Peak efficiency | 93% |
| Transfer time | 10 ms |
| Parallel units | Up to 6 units |
| Solar | |
| Max PV power | 9,000 W |
| Max PV voltage (Voc) | 500 V |
| MPPT range | 125 to 425 V |
| MPPT trackers | 1 |
| PV current per tracker | 27 A |
| Battery and grid | |
| Battery voltage | 48 V |
| Battery types | Lithium-ion, lead-acid, user-defined |
| Max charge current | 120 A |
| AC charge current | 100 A |
| Battery communication | Yes |
| Grid sell-back | No |
| Generator input | No |
| UL 1741 | Yes |
| Build | |
| App monitoring | Included |
| Enclosure | IP20 |
| Dimensions | 472 x 412 x 130 mm |
| Weight | 35.3 lb |
| Warranty | 2 years |
| Released | 2026-02 |
Alternatives in this output
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
PowMr POW-LVM6K-SP
For budget off-grid builds that need 240 V from a single box. The high idle draw and short warranty are the price of the low cost.
PowMr $549$549
Compare
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