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Will the EcoFlow NextGen 220W Bifacial Portable Solar Panel work with the EcoFlow RIVER Max?

Yes. One EcoFlow NextGen 220W Bifacial Portable Solar Panel works with the EcoFlow RIVER Max: about 23.5 V on a 20°F morning against the station's 25 V limit, and about 200 W in full sun. Two panels: works (2 panels in parallel on Solar input), about 200 W.

Verdict

Works

1 x NextGen 220W Bifacial Portable Solar Panel into the RIVER Max (1 panel on Solar input) stays inside 10 to 25 V and under 12 A, even at 20F.

1 x NextGen 220W Bifacial Portable Solar Panel1 panel on Solar input
RIVER MaxSolar input
Expected
200W
Voltage at 20F
23.5V
limit 25 V
Current
11.9A
cap 12 A
Cables to buy
  • Use the solar charging cable that came with the station (MC4 on the panel side).
EcoFlow NextGen 220W Bifacial Portable Solar Panel

220 W, open-circuit 21.5 V, short-circuit 12.4 A, working 18.4 V / 11.9 A. Brand page Panel details

EcoFlow RIVER Max

Solar input Solar input: 10 to 25 V, 200 W max. Brand page Station details

Change the count or temperature

Two panels: every way to wire them

WiringInputVolts at 20FAmpsWattsVerdict
2 panels in parallel on Solar input
The panels can push 23.8A but this input takes 12A, so the station caps it. Safe, you just lose some watts.
Solar input23.523.8200Works
2 panels in series on Solar input
Open-circuit voltage 43V is above the station's 25V limit. Going over a station's input voltage limit can damage it.
Solar input47.111.90Don't connect

Quick answers

Will the EcoFlow NextGen 220W Bifacial Portable Solar Panel work with the EcoFlow RIVER Max?

Yes. One EcoFlow NextGen 220W Bifacial Portable Solar Panel works with the EcoFlow RIVER Max: about 23.5 V on a 20°F morning against the station's 25 V limit, and about 200 W in full sun. Two panels: works (2 panels in parallel on Solar input), about 200 W.

Can I connect two NextGen 220W Bifacial Portable Solar Panel panels to the RIVER Max?

Yes, 2 panels in parallel on Solar input. That gives about 200 W.

What cable do I need to connect the NextGen 220W Bifacial Portable Solar Panel to the RIVER Max?

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 NextGen 220W Bifacial Portable Solar Panel goes from 21.5 V on its label to about 23.5 V at 20°F and 24.3 V at 0°F. The RIVER Max accepts up to 25 V on the Solar input.

Where to buy

Out of stock at the EcoFlow store
View at store

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Other panels that work with the RIVER Max

→Jackery SolarSaga 200 (JS-200E), about 200 W with two
→EcoFlow 100W Rigid Solar Panel, about 200 W with two
→EcoFlow 100W Flexible Solar Panel, about 200 W with two
→EcoFlow 110W Portable Solar Panel, about 200 W with two
→EcoFlow NextGen 160W Portable Solar Panel, about 200 W with two

All 33 panels checked against the RIVER Max

Rules we applied
  • EcoFlow RIVER Max: solar input 10 to 25 V on the Solar in (Solar input). 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 21.5 V becomes 23.5 V.
  • Current over the 12 A cap is safe: the station takes 12 A and you get fewer watts. We count only the capped watts.
  • Max 200 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