The EcoFlow RIVER 2 Max 500 takes up to 220 W of solar through one solar input (11–50 V, 13 A, 220 W). The quickest refill from a maker panel on sale today: 1 × BLUETTI PV350, 1 panel on the solar input, which brings it to 220 W and refills its 499 Wh in about 2.3 h of full sun.
Solar limit
220W
Fastest refill
2.3h of sun
Panels
1× 350 W
The panels cost $649 at BLUETTI, checked Oct 11, 2026. At a more typical 70% panel yield the refill takes about 2.3 h. Every arrangement here keeps the panels' open-circuit voltage under the limit on a -10 °C (14 °F) morning. Every panel we track.
1 × BLUETTI PV350 on the EcoFlow RIVER 2 Max 500: 1 panel on the solar input; 220 W in.
EcoFlow RIVER 2 Max 500: solar input limits from EcoFlow
solar input
11 to 50 V, 13 A max, 220 W, XT60 plug
All inputs together
220 W
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 RIVER 2 Max 500
8 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 RIVER 2 Max 500; 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
BLUETTI PV350: 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).
Jackery SolarSaga 100 Prime: Anderson on the panel and XT60 on the station, so you need an Anderson-to-XT60 solar cable. Its cable: 9.58 feet.
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 RIVER 2 Max 500 holds 499 Wh
Setup
3 h of sun
4 h of sun
5 h of sun
6 h of sun
1 × BLUETTI PV350
499 Wha full refill
499 Wha full refill
499 Wha full refill
499 Wha full refill
1 × EcoFlow NextGen 220W Bifacial
462 Wh93% of the battery
499 Wha full refill
499 Wha full refill
499 Wha full refill
1 × Jackery SolarSaga 200W
420 Wh84% of the battery
499 Wha full refill
499 Wha full refill
499 Wha full refill
Check another panel on the RIVER 2 Max 500
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 RIVER 2 Max 500 takes, and how to wire them.
EcoFlow product page: "11-50V⎓13A, 220W Max" · "Before connecting the solar panel, ensure that the output voltage of the solar panel is less than 50V to avoid product damage." · "Support car/solar charging input"
EcoFlow user manual (PDF): "Solar Charging Input 11-50V 13A, 220W Max" · "1. The solar charging cable (MC4-XT60 adapter cable) and the solar panel are supplied separately."
EcoFlow user manual (PDF): "DC Input 11-50V 13A, 220W Max" · "Connecting the wrong MC4 interface may damage the device. EcoFlow does not guarantee equipment failure caused by improper personal operation(For example, the open circuit voltage exceeds 60V)."
Panel figures: each panel's own page links its maker's spec sheet.
