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Solar · EcoFlow

Solar panels for the EcoFlow DELTA Pro 3

Written by Ian Schneider·Solar & Off-Grid Tester

EcoFlow gave the DELTA Pro 3 two solar ports and two different rulebooks. The low port takes 11 to 60 volts through an XT60i socket, EcoFlow's own variant of the yellow XT60 plug, and the car charger uses the same socket. The high port takes 30 to 150 volts through a plain XT60 and is built for a string, several panels wired end to end so their voltages add. Thirty-one of the forty-one panels we track publish a voltage. All thirty-one fit the low port on their own, and nothing we track reaches either ceiling.

The high port has a floor as well as a ceiling. Below 30 volts it does not start. Most folding panels read in the twenties on the label, so one of them on that port does nothing, and two of them in series clear it. A rigid panel like Renogy's 590 W reads 52.63 and walks in alone.

Between them the ports take 2600 W, and nothing we track fills that. The biggest set we can build is three of Renogy's 590 W rigid panels, 1275 W delivered. That has the 4096 Wh battery full in a little over three hours of good sun. One 200 W folding panel gives about 144 W and needs about twenty-eight hours. At the cabin I'd give the high port a string of rigid panels and keep the low port for a folding one I can drag out of the pine shadows.

The door
11–150 V
Its width
2600 W
Plug
XT60 / XT60i
Full battery, best case
~1.6 h
EcoFlow DELTA Pro 3 portable power station
A comparison block beside the specs on EcoFlow's product page reads 80-500 V. That row belongs to the DELTA Pro Ultra. The Pro 3's own row is labelled High-PV Input.

The door

Every panel we track, lined up at the DELTA Pro 3's solar input

Every panel we track with a published voltage, in a line by that voltage. The figure is the open-circuit voltage, Voc on the back label, what a panel puts out in sun with nothing plugged into it. The black line is 150 V, the high port's ceiling. No bar on its own comes close. That line is a string's limit. Wire panels end to end and the string's Voc is the sum of theirs.

The chart draws one line. The station has two others. The low port's ceiling is 60 V, and the tallest single panel here, Renogy's 590 W rigid at 52.63 V, clears it with room. The high port's floor is 30 V, and most folding panels sit under that on their own. Ten of the forty-one panels publish only a working voltage, so they stay off the chart until someone reads us the sticker.

The pale cap on each bar is the extra voltage a −10 °C morning adds, about 10%. The cold pushes a string the same way it pushes a panel, up. A string that lands near 150 V in September lands over it on a January morning. I'd size the string for my coldest morning and let summer have the slack.

Hover a bar for the panel's name and voltage. If yours isn't here, type its Voc into the field and the chart puts it in the line with the rest.

Swipe sideways for the whole line-up.

050100150200volts, open-circuit+++1yours?150 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: Renogy 590W N-Type Bifacial

What we'd buy

The best solar panel for the DELTA Pro 3

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

Best overall

Renogy 590W N-Type Bifacial Solar Panel (RSP590DCT-144)

3 panels deliver 1275 W.

Check price at Renogy

Best value

Eco-Worthy 195W N-Type 18BB Bifacial Solar Panel (GW-L02M195NTM)

About $0.93 for every watt it actually delivers here. 8 panels deliver 1123 W.

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 DELTA Pro 3 takes to charge on solar

A little over an hour and a half, with both ports full and 2600 W coming in. No set of panels we track gets there. The best set we found, three of Renogy's 590 W rigid panels, delivers 1275 W and takes a little over three hours.

One folding panel is a different story. A 200 W panel gives about 144 W in real sun and needs about twenty-eight hours. A 100 W panel gives about 72 W and needs about fifty-seven hours. A good day has 3 to 6 hours of sun that strong. The 200 W panel is the better part of a week, and the 100 W panel roughly double that. A 4096 Wh battery does not care how light the panel was to carry. The system builder works out your state and month.

a good day's sun: 3 to 6 h0 h1 h2 h3 h4 h5 h6 h7 h8 h9 h10 h11 h12 h13 h14 h15 h16 h17 h18 h19 h20 h21 h22 h23 h24 h25 h26 h27 h28 h29 h30 h31 h32 h33 h34 h35 h36 h37 h38 h39 h40 h41 h42 h43 h44 h45 h46 h47 h48 h49 h50 h51 h52 h53 h54 h55 h56 h57 h58 hInput full (2600 W) · full in 1.6 hOne 200 W panel (144 W delivered) · full in 28.4 hOne 100 W panel (72 W delivered) · full in 56.9 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 DELTA Pro 3

Thirty-one fit, eight of them EcoFlow's own. For each one: the cable that gets it to the right socket, and what a single panel delivers in good sun. Then the most the DELTA Pro 3 will take from a set of them. Eleven want an MC4-to-XT60 lead, MC4 being the weatherproof click-lock connectors on the back of most rigid panels. One plugs straight in, EcoFlow's 125 W modular rigid. The sets run from three panels to eight. Sorted by delivered watts.

EcoFlow's own, the pairings it documents

Everyone else's

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 DELTA Pro 3, 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 DELTA Pro 3 take to charge on solar?

One 100 W panel delivers about 72 W in good sun and refills the 4096 Wh battery from empty in about 56.9 hours.

One 200 W panel delivers about 144 W in good sun and refills the 4096 Wh battery from empty in about 28.4 hours.

At its 2600 W solar limit it refills in about 1.6 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 10 to 19 days to fill it. The system builder works it out for your state and month.

What adapter does the DELTA Pro 3 need for solar?

None, if the panel's plug is XT60 or XT60i: EcoFlow 125W Bifacial Modular plugs straight in.

The cables the other panels need: MC4 to XT60 (11 panels), DC8020 to XT60 (4 panels), Anderson to XT60 (3 panels) and DC5521 to XT60 (2 panels).

10 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 DELTA Pro 3?

Yes. What decides it is the panel's voltage and plug, not the brand. 23 panels from Renogy, Jackery, Anker SOLIX, BLUETTI, Eco-Worthy and Rich Solar work with it, as long as the panel stays under 150 V on a cold morning and starts above 11 V.

The strongest single panels here are the Renogy 590W N-Type Bifacial (425 W delivered) and the Jackery SolarSaga 500 X (360 W delivered).

Can you connect two solar panels to the DELTA Pro 3?

Yes. It has 2 solar inputs, so the simplest way is one panel on each.

Wired in series, up to 3 BLUETTI PV100 FX Flexible panels fit under its 150 V limit, even on a -10°C morning. Series adds voltage; parallel adds current.

Past 2600 W delivered, more panels only help on cloudy days.

What is the DELTA Pro 3's solar input?

High-PV Input: 30–150 V, up to 15 A, 1600 W. Low-PV Input / Car Input: 11–60 V, up to 20 A, 1000 W. 2600 W across all inputs together.

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