Will the Rich Solar MEGA 100 FLEX work with the EcoFlow RIVER 3 Plus?
Yes. One Rich Solar MEGA 100 FLEX works with the EcoFlow RIVER 3 Plus: about 22.3 V on a 20°F morning against the station's 55 V limit, and about 100 W in full sun. Two panels: works (2 panels in parallel on XT60i), about 200 W.
Works
1 x MEGA 100 FLEX into the RIVER 3 Plus (1 panel on XT60i) stays inside 11 to 55 V and under 13 A, even at 20F.
- EcoFlow's manual: keep the panel voltage under 55V to avoid damaging the station.
- The solar port is also the car charging port, so you can use one or the other at a time.
- The solar cable (solar to XT60i) is not in the box.
- Use an MC4 to XT60i solar cable.
100 W, open-circuit 20.4 V, short-circuit 6.1 A, working 17.1 V / 5.9 A. Brand page Panel details
EcoFlow RIVER 3 PlusSolar input XT60i: 11 to 55 V, 220 W max. Manual 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 XT60i Best option | XT60i | 22.3 | 11.7 | 200 | Works |
| 2 panels in series on XT60i | XT60i | 44.7 | 5.9 | 200 | Works |
Quick answers
Will the Rich Solar MEGA 100 FLEX work with the EcoFlow RIVER 3 Plus?
Yes. One Rich Solar MEGA 100 FLEX works with the EcoFlow RIVER 3 Plus: about 22.3 V on a 20°F morning against the station's 55 V limit, and about 100 W in full sun. Two panels: works (2 panels in parallel on XT60i), about 200 W.
Can I connect two MEGA 100 FLEX panels to the RIVER 3 Plus?
Yes, 2 panels in parallel on XT60i. That gives about 200 W.
What cable do I need to connect the MEGA 100 FLEX to the RIVER 3 Plus?
Use an MC4 to XT60i solar cable.
Is it safe on a cold morning?
Panel voltage rises in the cold. One MEGA 100 FLEX goes from 20.4 V on its label to about 22.3 V at 20°F and 23 V at 0°F. The RIVER 3 Plus accepts up to 55 V on the XT60i.
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Other panels that work with the RIVER 3 Plus
- EcoFlow RIVER 3 Plus: solar input 11 to 55 V on the Solar in (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 20.4 V becomes 22.3 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.