Will the Renogy E.Flex 200W Portable Solar Panel work with the EcoFlow RIVER Max?
Yes, with a catch. Fine in mild weather (23.4V), but on a 20°F (-7°C) morning the open-circuit voltage rises to about 25.6V, above the 25V limit. Cold makes panels push more voltage. Two panels: works, with a catch (2 panels in parallel on Solar input), about 200 W.
Works, with a catch
It charges, but read the note. Best option: 1 panel on Solar input.
- Fine in mild weather (23.4V), but on a 20°F (-7°C) morning the open-circuit voltage rises to about 25.6V, above the 25V limit. Cold makes panels push more voltage.
- 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 MaxSolar input Solar input: 10 to 25 V, 200 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 Fine in mild weather (23.4V), but on a 20°F (-7°C) morning the open-circuit voltage rises to about 25.6V, above the 25V limit. Cold makes panels push more voltage. | Solar input | 25.6 | 19.8 | 200 | Works, with a catch |
| 2 panels in series on Solar input Open-circuit voltage 46.8V is above the station's 25V limit. Going over a station's input voltage limit can damage it. | Solar input | 51.2 | 9.9 | 0 | Don't connect |
Quick answers
Will the Renogy E.Flex 200W Portable Solar Panel work with the EcoFlow RIVER Max?
Yes, with a catch. Fine in mild weather (23.4V), but on a 20°F (-7°C) morning the open-circuit voltage rises to about 25.6V, above the 25V limit. Cold makes panels push more voltage. Two panels: works, with a catch (2 panels in parallel on Solar input), about 200 W.
Can I connect two E.Flex 200W Portable Solar Panel panels to the RIVER Max?
Yes, 2 panels in parallel on Solar input. That gives about 200 W, with one catch: Fine in mild weather (23.4V), but on a 20°F (-7°C) morning the open-circuit voltage rises to about 25.6V, above the 25V limit. Cold makes panels push more voltage..
What cable do I need to connect the E.Flex 200W 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 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 Max accepts up to 25 V on the Solar input.
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Other panels that work with the RIVER Max
- 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 23.4 V becomes 25.6 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.
- 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.