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Will the Anker SOLIX PS400 Bifacial work with the EcoFlow DELTA Pro Ultra?

Yes. One Anker SOLIX PS400 Bifacial works with the EcoFlow DELTA Pro Ultra: about 63.1 V on a 20°F morning against the station's 150 V limit, and about 400 W in full sun. Two panels: works (2 panels in series on High-PV), about 800 W.

Verdict

Works

1 x PS400 Bifacial into the DELTA Pro Ultra (1 panel on Low-PV) stays inside 30 to 150 V and under 15 A, even at 20F.

1 x PS400 Bifacial1 panel on Low-PV
DELTA Pro UltraLow-PV
Expected
400W
Voltage at 20F
63.1V
limit 150 V
Current
8.3A
cap 15 A
  • 57.6 V open circuit: above the 55-60 V limit of many smaller stations even as a single panel on a cold morning.
Cables to buy
  • Use the solar charging cable that came with the station (MC4 on the panel side).
Anker SOLIX PS400 Bifacial

400 W, open-circuit 57.6 V, short-circuit 8.8 A, working 48 V / 8.3 A. Unconfirmed Panel details

EcoFlow DELTA Pro Ultra

Solar input High-PV: 80 to 450 V; Low-PV: 30 to 150 V, 5600 W max. Brand page Station details

Change the count or temperature

Two panels: every way to wire them

WiringInputVolts at 20FAmpsWattsVerdict
2 panels in series on High-PV
Best option
High-PV126.18.3800Works
2 panels in series on Low-PV
Low-PV126.18.3800Works
2 panels in parallel on Low-PV
The panels can push 16.7A but this input takes 15A, so the station caps it. Safe, you just lose some watts.
Low-PV63.116.7720Works
1 panel on High-PV + 1 panel on Low-PV
Open-circuit voltage 57.6V is below the 80V minimum for this input, so it will not start charging.
High-PV + Low-PV63.18.30Don't connect
2 panels in parallel on High-PV
Open-circuit voltage 57.6V is below the 80V minimum for this input, so it will not start charging.
High-PV63.116.70Don't connect

Quick answers

Will the Anker SOLIX PS400 Bifacial work with the EcoFlow DELTA Pro Ultra?

Yes. One Anker SOLIX PS400 Bifacial works with the EcoFlow DELTA Pro Ultra: about 63.1 V on a 20°F morning against the station's 150 V limit, and about 400 W in full sun. Two panels: works (2 panels in series on High-PV), about 800 W.

Can I connect two PS400 Bifacial panels to the DELTA Pro Ultra?

Yes, 2 panels in series on High-PV. That gives about 800 W.

What cable do I need to connect the PS400 Bifacial to the DELTA Pro Ultra?

Use the solar charging cable that came with the station (MC4 on the panel side).

Is it safe on a cold morning?

Panel voltage rises in the cold. One PS400 Bifacial goes from 57.6 V on its label to about 63.1 V at 20°F and 65 V at 0°F. The DELTA Pro Ultra accepts up to 150 V on the Low-PV.

Where to buy

$700 at the Anker SOLIX store, Oct 28, 2026
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$4,199 at the EcoFlow store, Oct 28, 2026
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Other panels that work with the DELTA Pro Ultra

→EcoFlow 400W Portable Solar Panel, about 800 W with two
→BLUETTI PV350D, about 700 W with two
→Rich Solar MEGA 200 PRO (24V), about 400 W with two
→Rich Solar MEGA 200 PRO FLEX (24V), about 400 W with two
→Anker SOLIX PS200 Bifacial, about 399 W with two

All 33 panels checked against the DELTA Pro Ultra

Rules we applied
  • 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 57.6 V becomes 63.1 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.
Assumptions
  • 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 Anker SOLIX PS400 Bifacial come from a shop listing we have not confirmed in the manual yet.
Sources
Shop listing, not yet confirmedPS400 Bifacial label values
Checked Oct 28, 2026