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EcoFlow · 400 W folding panel

EcoFlow 400W solar panel

400 W, 35.3 lb, folds to 41.7*24.4*1.0in(105.8*62.0*2.5cm). $599 at EcoFlow ($699), checked Oct 11, 2026: $1.50 per watt. It charges 78 of the 105 stations we have solar limits for, 12 of them EcoFlow's. The fastest refill from one input: the Dabbsson DBS1000 Pro, 2 in parallel, about 1.3 h of full sun.

From EcoFlow's published figures and our own arithmetic; we have not tested it ourselves.

See it at EcoFlow Check price on AmazonAmazon's price may differ All 18 panels

Specs

EcoFlow 400W: EcoFlow's figures
Rated power400 W
Open-circuit voltage (Voc)48 V
Max-power voltage (Vmp)41 V
Short-circuit current (Isc)11 A
Max-power current (Imp)9.8 A
Voc temperature coefficient-0.33% per °C
PlugMC4
Cablenot published
Weight35.3 lb (16 kg)
Folded41.7*24.4*1.0in(105.8*62.0*2.5cm)
Unfolded41.7*93.1*1.0in(105.8*236.5*2.5cm)
Water resistanceIP68
Cell efficiency22.6%
Warranty1 year

On a -10 °C (14 °F) morning one panel's open-circuit voltage rises to about 53.5 V. That is the figure each station's limit is checked against.

EcoFlow on linking panels: Manual: snap the connectors together 'to wire the two to three solar panels in series'; max panels in series: DELTA mini 1, DELTA 1, DELTA Max 2, DELTA Pro 3 (RIVER mini / RIVER Series: '-'). Parallel: 'Yes, but this is not recommended' because the high output current may exceed the station's input current limit.

Which stations it charges

One input of each station, the arrangement that takes the most with the fewest panels; fastest refill first. MC4 plugs let these panels go in series or parallel.

Stations it charges
StationPanels on one inputTakesFull sun to refill
Dabbsson DBS1000 Pro 2 in parallel 800 W 1.3 h
EcoFlow RIVER 3 Plus 1 panel 220 W 1.3 h
Allpowers R3500 2 in series × 3 strings in parallel 2,000 W 1.6 h
Allpowers S2000 Pro 2 in series 800 W 1.8 h
BLUETTI AC70 1 panel 400 W 1.9 h
Pecron F3000LFP 2 in series × 2 strings in parallel 1,600 W 1.9 h
Aferiy P180 2 in parallel 500 W 2 h
Pecron F5000LFP 3 in series × 2 strings in parallel 2,400 W 2.1 h
OUPES Guardian 6000 V2 3 in series × 2 strings in parallel 2,100 W 2.2 h
Pecron F1000LFP 1 panel 400 W 2.4 h
Goal Zero Yeti 1000 1 panel 400 W 2.5 h
Goal Zero Yeti PRO 4000 2 in series × 2 strings in parallel 1,600 W 2.5 h
Dabbsson 1000L 1 panel 400 W 2.5 h
Anker SOLIX C1000 Gen 2 1 panel 400 W 2.6 h
Anker SOLIX F3000 3 in series 1,200 W 2.6 h
BLUETTI AC200L 2 in series 800 W 2.6 h
BLUETTI Elite 100 V2 1 panel 400 W 2.6 h
EcoFlow DELTA 3listed by the maker 1 panel 400 W 2.6 h
EcoFlow DELTA 3 Classic 1 panel 400 W 2.6 h
EcoFlow DELTA 3 Plus 1 panel 400 W 2.6 h
EcoFlow DELTA Pro Ultralisted by the maker 6 in series 2,400 W 2.6 h
OUPES Mega 1 1 panel 400 W 2.6 h
OUPES Mega 2 2 in series 800 W 2.6 h
OUPES Mega 2 Pro 2 in parallel 800 W 2.6 h
Pecron E1000LFP 1 panel 400 W 2.6 h
4Patriots Patriot Power Solar Generator 1200 1 panel 400 W 2.6 h
Anker SOLIX C1000 1 panel 400 W 2.6 h
Dabbsson DBS2100 Pro 2 in parallel 800 W 2.7 h
BLUETTI Elite 100 mini 1 panel 350 W 2.9 h
Allpowers R1500 1 panel 400 W 2.9 h
BLUETTI AC180 1 panel 400 W 2.9 h
Zendure SuperBase V4600 2 in series × 2 strings in parallel 1,600 W 2.9 h
Dabbsson DBS2300 Plus 2 in parallel 800 W 2.9 h
Jackery Explorer 1000 Plus 1 panel 400 W 3.2 h
Anker SOLIX F3800 Plus 3 in series 1,200 W 3.2 h
Jackery Explorer 600 v2 1 panel 200 W 3.2 h
Dabbsson DBS1300 1 panel 400 W 3.3 h
BLUETTI AC180P 1 panel 400 W 3.6 h
Zendure SuperBase Pro 1500 1 panel 400 W 3.6 h
4Patriots Patriot Power Solar Generator 2200X 2 in parallel 600 W 3.7 h
Goal Zero Yeti 1500 1 panel 400 W 3.8 h
BLUETTI Elite 300 2 in parallel 800 W 3.8 h
Dabbsson 3000L 2 in parallel 800 W 3.8 h
Jackery Explorer 1500 Ultra 1 panel 400 W 3.8 h
OUPES Mega 3 2 in series 800 W 3.8 h
Pecron E1500LFP 1 panel 400 W 3.8 h
Pecron E3600LFP 2 in series 800 W 3.8 h
Zendure SuperBase V6400 2 in series × 2 strings in parallel 1,600 W 4 h
Mango Power E 2 in series 800 W 4.4 h
EcoFlow DELTA Prolisted by the maker 2 in series 800 W 4.5 h
Aferiy P310 2 in series 800 W 4.8 h
Anker SOLIX F3800 2 in parallel 800 W 4.8 h
Pecron E3800LFP 2 in series 800 W 4.8 h
Aferiy P280 1 panel 400 W 5.1 h
Aferiy P300 1 panel 400 W 5.1 h
Anker SOLIX C2000 Gen 2 1 panel 400 W 5.1 h
Dabbsson 2000L 1 panel 400 W 5.1 h
EcoFlow DELTA 2 Maxlisted by the maker 1 panel 400 W 5.1 h
EcoFlow DELTA 3 Max 1 panel 400 W 5.1 h
EcoFlow DELTA 3 Max Plus 1 panel 400 W 5.1 h
EcoFlow DELTA Pro 3listed by the maker 2 in series 800 W 5.1 h
Jackery HomePower 1000 Plus v2 1 panel 200 W 5.1 h
Jackery HomePower 2000 Plus v2 1 panel 400 W 5.1 h
Pecron E2400LFP 1 panel 400 W 5.1 h
BLUETTI Elite 200 V2 1 panel 400 W 5.2 h
Zendure SuperBase Pro 2000 1 panel 400 W 5.2 h
Jackery Explorer 1000 v2 1 panel 200 W 5.4 h
Anker SOLIX F2600 1 panel 400 W 6.4 h
BLUETTI Apex 300 1 panel 400 W 6.9 h
EcoFlow DELTA 3 Ultra 1 panel 400 W 7.7 h
EcoFlow DELTA 3 Ultra Plus 1 panel 400 W 7.7 h
Jackery Explorer 1500 v2 1 panel 200 W 7.7 h
Jackery HomePower 3000 1 panel 400 W 7.7 h
Allpowers R4000 1 panel 400 W 8.6 h
Jackery HomePower 3600 Plus 1 panel 400 W 9 h
Jackery HomePower 3600 Pro Max 1 panel 400 W 9 h
BLUETTI Elite 400 1 panel 400 W 9.6 h
Jackery Explorer 2000 v2 1 panel 200 W 10.2 h

Not on: 4Patriots Patriot Power Sidekick Solar Generator, Aferiy P010, Aferiy P040, Aferiy P110-D, Aferiy P180 Pro, Aferiy P210, Anker SOLIX C200 DC, Anker SOLIX C300, Anker SOLIX C300 DC, Anker SOLIX C300X, BLUETTI AC50B, BLUETTI Elite 30 V2, Dabbsson 300E, Dabbsson 600L, EcoFlow RIVER 2 (240), EcoFlow RIVER 2 Max 500, EcoFlow RIVER 2 Pro, EcoFlow RIVER mini Wireless, EcoFlow RIVER (original), Goal Zero Yeti 300, Goal Zero Yeti 500, Goal Zero Yeti 700, Jackery Explorer 300D, OUPES Exodus 350, OUPES Exodus 700, Pecron E300LFP, Pecron E500LFP (too much voltage, even one panel).

Where these figures come from

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Runtime is rated capacity × 0.85 ÷ watts. Check startup draw and connections separately. Prices are the maker's, with the day they were checked.