Will the EcoFlow 400W Portable Solar Panel work with the EcoFlow DELTA Pro 3?
Yes. One EcoFlow 400W Portable Solar Panel works with the EcoFlow DELTA Pro 3: about 52.6 V on a 20°F morning against the station's 150 V limit, and about 400 W in full sun. Two panels: works (1 panel on XT60 (High-PV) + 1 panel on XT60i (Low-PV)), about 800 W.
Works
1 x 400W Portable Solar Panel into the DELTA Pro 3 (1 panel on XT60 (High-PV)) stays inside 30 to 150 V and under 15 A, even at 20F.
- The two solar inputs are different. High-PV takes 30 to 150V, Low-PV takes 11 to 60V. A single small panel is too low for High-PV and will not charge there.
- EcoFlow's manual: panel voltage rises in cold weather, so keep a margin below the limit when wiring in series.
- For parallel wiring you need Y-branch (T-branch) solar cables.
- Use an MC4 to XT60 solar cable.
400 W, open-circuit 48 V, short-circuit 11 A, working 41 V / 9.8 A. Unconfirmed Panel details
EcoFlow DELTA Pro 3Solar input XT60 (High-PV): 30 to 150 V; XT60i (Low-PV): 11 to 60 V, 2600 W max. Manual Station details
Change the count or temperatureTwo panels: every way to wire them
| Wiring | Input | Volts at 20F | Amps | Watts | Verdict |
|---|---|---|---|---|---|
| 1 panel on XT60 (High-PV) + 1 panel on XT60i (Low-PV) Best option | XT60 (High-PV) + XT60i (Low-PV) | 52.6 | 9.8 | 800 | Works |
| 2 panels in series on XT60 (High-PV) | XT60 (High-PV) | 105.1 | 9.8 | 800 | Works |
| 2 panels in parallel on XT60i (Low-PV) | XT60i (Low-PV) | 52.6 | 19.6 | 800 | Works |
| 2 panels in parallel on XT60 (High-PV) The panels can push 19.6A but this input takes 15A, so the station caps it. Safe, you just lose some watts. | XT60 (High-PV) | 52.6 | 19.6 | 615 | Works |
| 2 panels in series on XT60i (Low-PV) Open-circuit voltage 96V is above the station's 60V limit. Going over a station's input voltage limit can damage it. | XT60i (Low-PV) | 105.1 | 9.8 | 0 | Don't connect |
Quick answers
Will the EcoFlow 400W Portable Solar Panel work with the EcoFlow DELTA Pro 3?
Yes. One EcoFlow 400W Portable Solar Panel works with the EcoFlow DELTA Pro 3: about 52.6 V on a 20°F morning against the station's 150 V limit, and about 400 W in full sun. Two panels: works (1 panel on XT60 (High-PV) + 1 panel on XT60i (Low-PV)), about 800 W.
Can I connect two 400W Portable Solar Panel panels to the DELTA Pro 3?
Yes, 1 panel on XT60 (High-PV) + 1 panel on XT60i (Low-PV). That gives about 800 W.
What cable do I need to connect the 400W Portable Solar Panel to the DELTA Pro 3?
Use an MC4 to XT60 solar cable.
Is it safe on a cold morning?
Panel voltage rises in the cold. One 400W Portable Solar Panel goes from 48 V on its label to about 52.6 V at 20°F and 54.2 V at 0°F. The DELTA Pro 3 accepts up to 150 V on the XT60 (High-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 3
- EcoFlow DELTA Pro 3: solar input 30 to 150 V on the Solar in 1 (XT60 (High-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 48 V becomes 52.6 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, 2,600 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.
- Some numbers for EcoFlow 400W Portable Solar Panel come from a shop listing we have not confirmed in the manual yet.