Power Station
EcoFlow DELTA Pro 3 Portable Power Station
The best outlet selection here for real jobsite work — native 240V, an L14-30R, and a TT-30R. EcoFlow claims UL 9540, which is the stationary storage standard, not UL 2743.
If you need to run 240V equipment — a welder, a well pump, a compressor — this is the unit on this page that does it natively, without an inverter workaround. The outlet set is the reason to buy it: an L14-30R and a TT-30R mean it connects to generator cords and RV shore power directly. On certification, be precise: EcoFlow's own product title claims UL 9540, which covers stationary energy storage systems, not the UL 2743 portable power station standard. Some retailers additionally claim UL 9540A; EcoFlow does not, and neither do we.
What it is
- 4,096 Wh LiFePO4, 4,000 cycles
- 4,000W continuous / 6,000W X-Boost / 8,000W surge
- Native 120V and 240V output
- 4 × NEMA 5-20R, 1 × TT-30R, 1 × 6-20R, 1 × L14-30R
- 10 ms UPS, holds full output while pass-through charging
- Expandable to 12 kWh; 48 kWh with three units
| Brand | EcoFlow |
|---|---|
| Category | Power Station |
| Compatibility | Universal fit |
| Sold by | Manufacturer |
| Specs verified | 2026-08-26 |