The EcoFlow DELTA 2 Max takes up to 1,000 W of solar through two solar inputs (each 11–60 V, 15 A, 500 W). The quickest refill from a maker panel on sale today: 2 × Jackery SolarSaga 500 X, 1 panel on each of its 2 solar inputs, which brings it to 1,000 W and refills its 2,048 Wh in about 2 h of full sun.
Solar limit
1,000W
Fastest refill
2h of sun
Panels
2× 500 W
The panels cost $1,598 at Jackery, checked Oct 11, 2026. At a more typical 70% panel yield the refill takes about 2.9 h. Every arrangement here keeps the panels' open-circuit voltage under the limit on a -10 °C (14 °F) morning. Every panel we track.
2 × Jackery SolarSaga 500 X on the EcoFlow DELTA 2 Max: 1 panel on each of its 2 solar inputs; 1,000 W in.
EcoFlow DELTA 2 Max: solar input limits from EcoFlow
solar input (×2)
11 to 60 V, 15 A max, 500 W, XT60 plug
All inputs together
1,000 W (EcoFlow: "single port 500W; dual port 1,000W")
Two panels in series add their voltages; strings in parallel add their currents. A panel's open-circuit voltage (Voc) rises on cold, bright mornings, so each arrangement below is checked with the panel's own temperature coefficient, or -0.35% per °C where the maker publishes none, at -10 °C (14 °F). Strings in parallel are kept within the input's current figure; a single string that could give more is held back by the input itself.
Every maker panel we track, on the DELTA 2 Max
11 of the 18 panels fit, fastest refill first. Each uses every input that can take it; the hours are full sun, from empty.
Maker panels on the EcoFlow DELTA 2 Max; prices Oct 11, 2026
"Full sun to refill" is the ideal floor: the station taking its input limit every hour. Panels rarely deliver their rating, so the 70% column is closer to a good day, and a usable day holds four to six hours of full sun in most of the US. Panels whose maker does not name an MC4 plug are counted one to an input, since they link to others only through the maker's own adapters.
Cables between panel and station
Jackery SolarSaga 100 Prime and other panels with the same plug: Anderson on the panel and XT60 on the station, so you need an Anderson-to-XT60 solar cable. Its cable: 9.58 feet.
BLUETTI PV350 and other panels with the same plug: MC4 on the panel and XT60 on the station, so you need an MC4-to-XT60 solar cable. Its cable: 20A MC4 to XT60 Solar Charging Cable (1.5m).
Jackery SolarSaga 40 Air and other panels with the same plug: DC8020 on the panel and XT60 on the station, so you need a DC8020-to-XT60 solar cable. Its cable: Multifunctional Solar Charging Cable (5.9 ft/1.8m).
EcoFlow does not list a solar cable in the station's own box, so check the panel's box or buy the cable for its plug.
What a day of sun puts back
Watt-hours back in a day, at a 70% panel yield and the station's input limit. Winter in the northern US gives about 3 hours of full sun, a clear summer day in the Southwest 6 or more.
Watt-hours back per day; the DELTA 2 Max holds 2,048 Wh
Setup
3 h of sun
4 h of sun
5 h of sun
6 h of sun
2 × Jackery SolarSaga 500 X
2,048 Wha full refill
2,048 Wha full refill
2,048 Wha full refill
2,048 Wha full refill
2 × EcoFlow 400W
1,680 Wh82% of the battery
2,048 Wha full refill
2,048 Wha full refill
2,048 Wha full refill
1 × Jackery SolarSaga 500 X
1,050 Wh51% of the battery
1,400 Wh68% of the battery
1,750 Wh85% of the battery
2,048 Wha full refill
Check another panel on the DELTA 2 Max
Type the figures from the panel's label or spec sheet (they are given at 25 °C). The check assumes MC4 plugs, so panels can go in series or parallel.
Enter the four figures to see how many of these panels the DELTA 2 Max takes, and how to wire them.
EcoFlow product page: "Solar charging input (×2) | 11-60V⎓15A, single port 500W; dual port 1,000W" · "Before connecting the solar panel, please ensure that the solar panel’s output voltage is within 60V to avoid product damage." · "are not included in the package."
EcoFlow user manual (PDF): "Solar charging input (×2) 11-60V 15A, single port 500W; dual port 1,000W" · "Solar charging cable (MC4-XT60 adapter cable) and the solar panel are supplied separately."
EcoFlow user manual (PDF): "1. DELTA 2 Max 2. User Manual & Warranty Card 3. AC Charging Cable 4. Car Charging Cable 5. DC5521 to DC5525 Cable"
Panel figures: each panel's own page links its maker's spec sheet.
