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Will the Renogy E.Flex 200W Portable Solar Panel work with the EcoFlow DELTA 3 Ultra?

Yes. One Renogy E.Flex 200W Portable Solar Panel works with the EcoFlow DELTA 3 Ultra: about 25.6 V on a 20°F morning against the station's 60 V limit, and about 200 W in full sun. Two panels: works (2 panels in series on Solar input (XT60i)), about 400 W.

Verdict

Works

1 x E.Flex 200W Portable Solar Panel into the DELTA 3 Ultra (1 panel on Solar input (XT60i)) stays inside 11 to 60 V and under 18 A, even at 20F.

1 x E.Flex 200W Portable Solar Panel1 panel on Solar input (XT60i)
DELTA 3 UltraSolar input (XT60i)
Expected
200W
Voltage at 20F
25.6V
limit 60 V
Current
9.9A
cap 18 A
Cables to buy
  • Use an MC4 to XT60i solar cable.
Renogy E.Flex 200W Portable Solar Panel

200 W, open-circuit 23.4 V, short-circuit 10.5 A, working 20.2 V / 9.9 A. Brand page Panel details

EcoFlow DELTA 3 Ultra

Solar input Solar input (XT60i): 11 to 60 V, 800 W max. Manual Station details

Change the count or temperature

Two panels: every way to wire them

WiringInputVolts at 20FAmpsWattsVerdict
2 panels in series on Solar input (XT60i)
Best option
Solar input (XT60i)51.29.9400Works
2 panels in parallel on Solar input (XT60i)
The panels can push 19.8A but this input takes 18A, so the station caps it. Safe, you just lose some watts.
Solar input (XT60i)25.619.8363Works

Quick answers

Will the Renogy E.Flex 200W Portable Solar Panel work with the EcoFlow DELTA 3 Ultra?

Yes. One Renogy E.Flex 200W Portable Solar Panel works with the EcoFlow DELTA 3 Ultra: about 25.6 V on a 20°F morning against the station's 60 V limit, and about 200 W in full sun. Two panels: works (2 panels in series on Solar input (XT60i)), about 400 W.

Can I connect two E.Flex 200W Portable Solar Panel panels to the DELTA 3 Ultra?

Yes, 2 panels in series on Solar input (XT60i). That gives about 400 W.

What cable do I need to connect the E.Flex 200W Portable Solar Panel to the DELTA 3 Ultra?

Use an MC4 to XT60i solar cable.

Is it safe on a cold morning?

Panel voltage rises in the cold. One E.Flex 200W Portable Solar Panel goes from 23.4 V on its label to about 25.6 V at 20°F and 26.4 V at 0°F. The DELTA 3 Ultra accepts up to 60 V on the Solar input (XT60i).

Where to buy

$220 at the Renogy store, Oct 28, 2026
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$1,349 at the EcoFlow store, Oct 28, 2026
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Other panels that work with the DELTA 3 Ultra

→EcoFlow 400W Portable Solar Panel, about 738 W with two
→Renogy 250W N-Type Bifacial Solar Panel, about 500 W with two
→BLUETTI PV350D, about 497 W with two
→EcoFlow NextGen 220W Bifacial Portable Solar Panel, about 438 W with two
→Jackery SolarSaga 200 (JS-200E), about 400 W with two

All 33 panels checked against the DELTA 3 Ultra

Rules we applied
  • EcoFlow DELTA 3 Ultra: solar input 11 to 60 V on the Solar in (Solar input (XT60i)). 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 23.4 V becomes 25.6 V.
  • Current over the 18 A cap is safe: the station takes 18 A and you get fewer watts. We count only the capped watts.
  • Max 800 W on this input.
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.
Sources
Checked Oct 28, 2026