We may earn a commission if you buy through these links. It never changes a verdict. How this works
Find my setup

Will the Renogy 100W Lightweight Flexible Solar Panel work with the EcoFlow RIVER Max Plus?

Yes. One Renogy 100W Lightweight Flexible Solar Panel works with the EcoFlow RIVER Max Plus: about 24.6 V on a 20°F morning against the station's 25 V limit, and about 100 W in full sun. Two panels: works (2 panels in parallel on Solar input), about 200 W.

Verdict

Works

1 x 100W Lightweight Flexible Solar Panel into the RIVER Max Plus (1 panel on Solar input) stays inside 10 to 25 V and under 12 A, even at 20F.

1 x 100W Lightweight Flexible Solar Panel1 panel on Solar input
RIVER Max PlusSolar input
Expected
100W
Voltage at 20F
24.6V
limit 25 V
Current
5.3A
cap 12 A
Cables to buy
  • Use the solar charging cable that came with the station (MC4 on the panel side).
Renogy 100W Lightweight Flexible Solar Panel

100 W, open-circuit 22.5 V, short-circuit 5.8 A, working 18.9 V / 5.3 A. Brand page Panel details

EcoFlow RIVER Max Plus

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
Best option
Solar input24.610.6200Works
2 panels in series on Solar input
Open-circuit voltage 45V is above the station's 25V limit. Going over a station's input voltage limit can damage it.
Solar input49.35.30Don't connect

Quick answers

Will the Renogy 100W Lightweight Flexible Solar Panel work with the EcoFlow RIVER Max Plus?

Yes. One Renogy 100W Lightweight Flexible Solar Panel works with the EcoFlow RIVER Max Plus: about 24.6 V on a 20°F morning against the station's 25 V limit, and about 100 W in full sun. Two panels: works (2 panels in parallel on Solar input), about 200 W.

Can I connect two 100W Lightweight Flexible Solar Panel panels to the RIVER Max Plus?

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

What cable do I need to connect the 100W Lightweight Flexible Solar Panel to the RIVER Max Plus?

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 100W Lightweight Flexible Solar Panel goes from 22.5 V on its label to about 24.6 V at 20°F and 25.4 V at 0°F. The RIVER Max Plus accepts up to 25 V on the Solar input.

Where to buy

$150 at the Renogy store, Oct 28, 2026
Buy
Out of stock at the EcoFlow store
View at store

We may earn a commission if you buy through these links. It never changes a verdict.

Other panels that work with the RIVER Max Plus

→Jackery SolarSaga 200 (JS-200E), about 200 W with two
→EcoFlow NextGen 220W Bifacial Portable Solar Panel, 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

All 33 panels checked against the RIVER Max Plus

Rules we applied
  • EcoFlow RIVER Max Plus: 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 22.5 V becomes 24.6 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.
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