For a small 120 V cabin, shed or van system on a 24 V battery at the lowest price. Buyers who want published efficiency and a UL listing should spend more.
Amazon PowMr $289
For a 120 V cabin or backup circuit with a decent array and long panel strings. Buyers who need 240 V should look at a split-phase unit instead of buying two.
- 5 kWOutput
- 48 VBattery
- 5,500 WSolar input
- 2 yearsWarranty
Price checked October 23, 2026. As an Amazon Associate we earn from qualifying purchases.
- ETL listed to UL 1741, which eases inspection
- Two 500 V solar trackers take 5,500 W of panels on long, light strings
- Runs loads from solar with no battery connected
- Pair two units for 120/240 V, or stack up to six
- A single unit gives 120 V only; 240 V loads need a second inverter
- AC charging tops out at 40 A, slow for refilling a big bank from a generator
- Wi-Fi monitoring is an add-on module
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 | ECO5000W(SR) |
|---|---|
| Output | |
| Output voltage | 120 V single-phase |
| Continuous output | 5,000 W |
| Surge | 10,000 W |
| Peak efficiency | 92% |
| Parallel units | Up to 6 units |
| Solar | |
| Max PV power | 5,500 W |
| Max PV voltage (Voc) | 500 V |
| MPPT range | 120 to 450 V |
| MPPT trackers | 2 |
| PV current per tracker | 22 A |
| Runs without battery | Yes |
| Battery and grid | |
| Battery voltage | 48 V |
| Max charge current | 100 A |
| AC charge current | 40 A |
| Grid sell-back | No |
| UL 1741 | Yes |
| Build | |
| App monitoring | Optional add-on |
| Dimensions | 446.9 x 350 x 133 mm |
| Weight | 30.9 lb |
| Warranty | 2 years |
| Released | 2025-04 |
Alternatives in this output
A cheap, UL-listed 5 kW 120 V building block for cabins and backup systems. Add a second unit for 240 V.
Amazon SunGoldPower $750For 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 $1,299.99Compare
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