Will the Renogy E.Flex 200W Portable Solar Panel work with the EcoFlow RIVER 2 Max?
Yes. One Renogy E.Flex 200W Portable Solar Panel works with the EcoFlow RIVER 2 Max: about 25.6 V on a 20°F morning against the station's 50 V limit, and about 200 W in full sun. Two panels: works (2 panels in parallel on Solar input), about 220 W.
Works
1 x E.Flex 200W Portable Solar Panel into the RIVER 2 Max (1 panel on Solar input) stays inside 11 to 50 V and under 13 A, even at 20F.
- Use the solar charging cable that came with the station (MC4 on the panel side).
200 W, open-circuit 23.4 V, short-circuit 10.5 A, working 20.2 V / 9.9 A. Brand page Panel details
EcoFlow RIVER 2 MaxSolar input Solar input: 11 to 50 V, 220 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 parallel on Solar input The panels can push 19.8A but this input takes 13A, so the station caps it. Safe, you just lose some watts. | Solar input | 25.6 | 19.8 | 220 | Works |
| 2 panels in series on Solar input Fine in mild weather (46.8V), but on a 20°F (-7°C) morning the open-circuit voltage rises to about 51.2V, above the 50V limit. Cold makes panels push more voltage. | Solar input | 51.2 | 9.9 | 220 | Works, with a catch |
Quick answers
Will the Renogy E.Flex 200W Portable Solar Panel work with the EcoFlow RIVER 2 Max?
Yes. One Renogy E.Flex 200W Portable Solar Panel works with the EcoFlow RIVER 2 Max: about 25.6 V on a 20°F morning against the station's 50 V limit, and about 200 W in full sun. Two panels: works (2 panels in parallel on Solar input), about 220 W.
Can I connect two E.Flex 200W Portable Solar Panel panels to the RIVER 2 Max?
Yes, 2 panels in parallel on Solar input. That gives about 220 W.
What cable do I need to connect the E.Flex 200W Portable Solar Panel to the RIVER 2 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 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 RIVER 2 Max accepts up to 50 V on the Solar input.
Where to buy
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Other panels that work with the RIVER 2 Max
- EcoFlow RIVER 2 Max: solar input 11 to 50 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 23.4 V becomes 25.6 V.
- Current over the 13 A cap is safe: the station takes 13 A and you get fewer watts. We count only the capped watts.
- Max 220 W on this input.
- 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.