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Solar · EcoFlow

Solar panels for the EcoFlow RIVER 2 Pro

Written by Ian Schneider·Solar & Off-Grid Tester

EcoFlow will sell you the RIVER 2 Pro with a 160 W folding panel in the box, or with a 220 W one. Neither panel fills the solar port by itself. The port is rated for 11 to 50 volts and 220 W, through a plain XT60 socket, a yellow two-pin DC connector. Two of EcoFlow's folding panels get it there. So does one rigid panel from the list further down.

Twenty-seven of the forty-one panels we track stay under 50 volts, six of them EcoFlow's own. Five go over. Two of those are EcoFlow's as well, and they only cross the line once a cold morning adds its share. Nine more have no published voltage yet, so they sit out.

With the port full, 768 Wh is about three and a half hours of good sun. One 200 W folding panel on its own gives about 144 W and needs a little over five hours. For a weekend at the cabin I'd carry two folders rather than one and be finished before the pine shadows reach the deck.

The door
11–50 V
Its width
220 W
Plug
XT60
Full battery, best case
~3.5 h
EcoFlow RIVER 2 Pro portable power station
The US manual's in-the-box list runs 1, 2, 4: the station, an AC charging cable, the paperwork. Nothing in it connects a panel.

The door

Every panel we track, lined up at the RIVER 2 Pro's solar input

Every panel we track, stood in a line by the voltage on its label. That figure is Voc, the open-circuit voltage: what the panel puts out in full sun with nothing on the other end of the cable. The black line is 50 V, the RIVER 2 Pro's ceiling. A bar that reaches past it stays off this station.

The pale cap on top of each bar is a cold morning, about 10% more at −10 °C. Two bars only cross the line with the cap on, and both are EcoFlow's own. The 400W folding panel reads 48 on the label. On my deck in January it would read more than 48.

Hover a bar for the panel's name. If you already own a panel, type its Voc in the box and the chart adds a bar for it.

Swipe sideways for the whole line-up.

010203040506070volts, open-circuit+1++2yours?50 V · the lintel11 V · the step

Hover or tap a bar for the panel’s name and its verdict.

  • Fits through the door
  • Too tall
  • Extra height on a −10 °C morning
  • Maker prints only the operating voltage; the real height is above the dashes
  • 1Our pick: BLUETTI 350W
  • 2EcoFlow's own 125W Bifacial Modular

What we'd buy

The best solar panel for the RIVER 2 Pro

Picked by the numbers on this station, not by brand.

Best overall

BLUETTI 350W Solar Panel (PV350)

One panel delivers 220 W, the most the input takes.

Check price at BLUETTI

Best value

Eco-Worthy 200W Flexible HJT Solar Panel 18V ETFE 18BB (GW-L02AM200HJT2)

About $1.64 for every watt it actually delivers here. 2 panels deliver 220 W, the most the input takes.

Check price at Eco-Worthy

Best to carry

Renogy 200W Portable Solar Panel Blanket (RPP200SB-SE)

144 W from a 8.82 lb panel, the most delivered watts per pound.

Check price at Renogy

A day on solar

How long the RIVER 2 Pro takes to charge on solar

About three and a half hours, with the port taking its full 220 W. Twenty-three of the panels that fit can get it there, a few of them alone. One 200 W folding panel on its own delivers about 144 W in real sun and takes a little over five hours. A 100 W panel delivers about 72 W and needs a little under eleven.

A good day gives three to six hours of sun that strong. The full port fills the RIVER 2 Pro in one of them. One 200 W folder needs most of a day, sometimes a piece of the next. One 100 W panel does not finish in a day. How many of those days a month brings depends on your state and the season, and the system builder keeps those numbers.

a good day's sun: 3 to 6 h0 h1 h2 h3 h4 h5 h6 h7 h8 h9 h10 h11 h12 hInput full (220 W) · full in 3.5 hOne 200 W panel (144 W delivered) · full in 5.3 hOne 100 W panel (72 W delivered) · full in 10.7 h

Hours of good sun, from empty. Where you live and the month decide how many of those a day gives; the system builder works it out.

Every panel that fits

Solar panels compatible with the RIVER 2 Pro

Twenty-seven fit. For each one: the cable that gets it to the XT60 socket, what one panel delivers in good sun, and the most the RIVER 2 Pro will take from a set. Sorted by delivered watts. Eleven of them want an MC4-to-XT60 lead, MC4 being the pair of weatherproof snap connectors most panels end in. EcoFlow sells that lead separately.

Too tall

Solar panels that won't work with the RIVER 2 Pro

Five panels push past 50 volts. Two are EcoFlow's own, the 400W folding panel at 48 on the label and the 125W Bifacial Modular at 50, and both only cross once a cold morning adds about 10%. The manual draws the line at less than 50 V and says more can damage the station. If you own either, it belongs on a taller input.

The other three are taller on the label. Renogy's 590 W bifacial reads 52.63 V and the Anker SOLIX PS200 reads 57.6. The Jackery SolarSaga 500 X reads 48.5, and Jackery allows 5% either way, which is enough on its own. I wouldn't bother with the Fluke on that one. The label already says no.

Over the 50 V lintel (5)

No verdict (9): the maker doesn't publish an open-circuit voltage

Own a panel that isn't in the line-up?

Type its voltage into the door chart above for the height test, then put the rest of the label into the panel checker, already set to the RIVER 2 Pro, for current and plug too. Or build the whole system to see how it keeps up where you live.

The plain answers

How long does the RIVER 2 Pro take to charge on solar?

One 100 W panel delivers about 72 W in good sun and refills the 768 Wh battery from empty in about 10.7 hours.

One 200 W panel delivers about 144 W in good sun and refills the 768 Wh battery from empty in about 5.3 hours.

At its 220 W solar limit it refills in about 3.5 hours. More panel watts than that won't charge it any faster.

A day gives three to six hours of sun that good, depending on season and place, so one 100 W panel takes 2 to 4 days to fill it. The system builder works it out for your state and month.

What adapter does the RIVER 2 Pro need for solar?

Every panel we track needs a cable to reach its XT60 input. None comes in the box.

The cables they need: MC4 to XT60 (11 panels), DC8020 to XT60 (4 panels), Anderson to XT60 (2 panels) and DC5521 to XT60 (2 panels).

8 panels don't have a named plug from their maker, so check the lead before you buy a cable.

Can you use non-EcoFlow solar panels with the RIVER 2 Pro?

Yes. What decides it is the panel's voltage and plug, not the brand. 21 panels from Anker SOLIX, BLUETTI, Renogy, Eco-Worthy, Jackery and Rich Solar work with it, as long as the panel stays under 50 V on a cold morning and starts above 11 V.

The strongest single panels here are the Anker SOLIX 440W Rigid (220 W delivered) and the BLUETTI 350W (220 W delivered).

Can you connect two solar panels to the RIVER 2 Pro?

Yes, joined into one input with a series or parallel cable.

Don't wire two BLUETTI PV100 FX Flexible panels in series: together they would pass its 50 V limit. Parallel them instead.

Past 220 W delivered, more panels only help on cloudy days.

What is the RIVER 2 Pro's solar input?

Solar Charging Input: 11–50 V, up to 13 A, 220 W.

Input limits from EcoFlow's documents, checked 2026-09-18 (source). Delivered watts assume 72% of the panel's rating in good sun.