Will the BLUETTI PV350D work with the EcoFlow DELTA Pro Ultra?
Yes, with a catch. Working voltage 27.6V is below the 30V minimum, so charging may drop out in weak light. Two panels: works (2 panels in series on Low-PV), about 700 W.
Works, with a catch
It charges, but read the note. Best option: 1 panel on Low-PV.
- Working voltage 27.6V is below the 30V minimum, so charging may drop out in weak light.
- The panel's plug type is not confirmed yet. Check the label or the box before buying a cable.
350 W, open-circuit 33 V, short-circuit 13.8 A, working 27.6 V / 12.7 A. Manual Panel details
EcoFlow DELTA Pro UltraSolar input High-PV: 80 to 450 V; Low-PV: 30 to 150 V, 5600 W max. Brand page Station details
Change the count or temperatureTwo panels: every way to wire them
| Wiring | Input | Volts at 20F | Amps | Watts | Verdict |
|---|---|---|---|---|---|
| 2 panels in series on Low-PV Best option | Low-PV | 72.3 | 12.7 | 700 | Works |
| 2 panels in parallel on Low-PV Working voltage 27.6V is below the 30V minimum, so charging may drop out in weak light. | Low-PV | 36.1 | 25.4 | 414 | Works, with a catch |
| 1 panel on High-PV + 1 panel on Low-PV Open-circuit voltage 33V is below the 80V minimum for this input, so it will not start charging. | High-PV + Low-PV | 36.1 | 12.7 | 0 | Don't connect |
| 2 panels in parallel on High-PV Open-circuit voltage 33V is below the 80V minimum for this input, so it will not start charging. | High-PV | 36.1 | 25.4 | 0 | Don't connect |
| 2 panels in series on High-PV Open-circuit voltage 66V is below the 80V minimum for this input, so it will not start charging. | High-PV | 72.3 | 12.7 | 0 | Don't connect |
Quick answers
Will the BLUETTI PV350D work with the EcoFlow DELTA Pro Ultra?
Yes, with a catch. Working voltage 27.6V is below the 30V minimum, so charging may drop out in weak light. Two panels: works (2 panels in series on Low-PV), about 700 W.
Can I connect two PV350D panels to the DELTA Pro Ultra?
Yes, 2 panels in series on Low-PV. That gives about 700 W.
What cable do I need to connect the PV350D to the DELTA Pro Ultra?
The panel's plug type is not confirmed yet. Check the label or the box before buying a cable.
Is it safe on a cold morning?
Panel voltage rises in the cold. One PV350D goes from 33 V on its label to about 36.1 V at 20°F and 37.2 V at 0°F. The DELTA Pro Ultra accepts up to 150 V on the Low-PV.
Where to buy
We may earn a commission if you buy through these links. It never changes a verdict.
Other panels that work with the DELTA Pro Ultra
- EcoFlow DELTA Pro Ultra: solar input 30 to 150 V on the Solar in 2 (Low-PV). EcoFlow sets this limit on open-circuit voltage (Voc), so we hold the panels' Voc on your coldest morning to it.
- Cold raises panel voltage: we add 0.30% per °C below 77F (25°C), a typical figure, since this panel does not publish its own. At 20F one panel's 33 V becomes 36.1 V.
- Current over the 15 A cap is safe: the station takes 15 A and you get fewer watts. We count only the capped watts.
- Max 1,600 W on this input, 5,600 W across all inputs.
- Cold-morning voltage uses 0.30% per °C, typical for crystalline panels. This panel's own value is not published.
- Expected watts are the best case in full sun. Real-world midday output is usually 60 to 80% of that.