EcoFlow DELTA Pro 3 with the EcoFlow 100W Rigid
Works, with caveats · 4S1P · 404 W
This page is excluded from search: Mismatched sizes: even the best layout, 4 panels, needs 15 sun-hours to refill 4096 Wh.
Thick mark: cold Voc · Thin mark: operating Vmp, 68.4 V
1 caveat
- The connector type comes from a secondary source, so check the physical port.
Parts for this layout
- EcoFlow DELTA Pro 3$2,799 View on Amazon
- 2 × EcoFlow 100W Rigid (2-pack)$478 View on Amazon
- 10 FT Solar to XT60 Extension Cable Solar Panel XT60 Adapter$22.99 View on Amazon
Estimated total $3,299.99
Prices can change. The price on Amazon at purchase is what applies.
Can I connect the EcoFlow 100W Rigid to the EcoFlow DELTA Pro 3?
Yes, with limits. The best setup is 4 panels wired 4S1P on High-PV Input, delivering up to 404 W. That string reaches 90.6 V at −10 °C against the port’s 150 V limit, using EcoFlow’s published -0.33 %/°C coefficient. Check your own unit’s labels too.
Danger: overvoltage risk. Do not connect the layouts marked red below. Going over a station’s input voltage limit can permanently damage it.
What is the best way to wire EcoFlow 100W Rigid panels to the EcoFlow DELTA Pro 3?
Wire them 4S1P on High-PV Input for about 404 W from 4 panels. The string runs at 68.4 V, above the 30 V minimum the port needs to start. Stop at 2 in series on the lowest-voltage port, because 3 in series exceeds its limit in the cold.
| Port | Layout | Voc 25 °C | Voc 0 °C | Voc −10 °C | Voc −20 °C | Vmp | Isc | Watts | Verdict at −10 °C |
|---|---|---|---|---|---|---|---|---|---|
| High-PV Input | 1S1P | 20.3 | 22.0 | 22.6 | 23.3 | 17.1 | 6.3 | 0 | Won’t charge: below MPPT floor |
| High-PV Input | 1S2P | 20.3 | 22.0 | 22.6 | 23.3 | 17.1 | 12.6 | 0 | Won’t charge: below MPPT floor |
| High-PV Input | 2S1P | 40.6 | 43.9 | 45.3 | 46.6 | 34.2 | 6.3 | 202 | Works, with caveats |
| High-PV Input | 2S2P | 40.6 | 43.9 | 45.3 | 46.6 | 34.2 | 12.6 | 404 | Works, with caveats |
| High-PV Input | 3S1P | 60.9 | 65.9 | 67.9 | 69.9 | 51.3 | 6.3 | 303 | Works, with caveats |
| High-PV Input | 4S1P | 81.2 | 87.9 | 90.6 | 93.3 | 68.4 | 6.3 | 404 | Works, with caveats |
| Low-PV Input | 1S1P | 20.3 | 22.0 | 22.6 | 23.3 | 17.1 | 6.3 | 101 | Works with the right cable |
| Low-PV Input | 1S2P | 20.3 | 22.0 | 22.6 | 23.3 | 17.1 | 12.6 | 202 | Works with the right cable |
| Low-PV Input | 2S1P | 40.6 | 43.9 | 45.3 | 46.6 | 34.2 | 6.3 | 202 | Works with the right cable |
| Low-PV Input | 2S2P | 40.6 | 43.9 | 45.3 | 46.6 | 34.2 | 12.6 | 404 | Works with the right cable |
| Low-PV Input | 3S1P | 60.9 | 65.9 | 67.9 | 69.9 | 51.3 | 6.3 | 0 | Danger: overvoltage |
| Low-PV Input | 4S1P | 81.2 | 87.9 | 90.6 | 93.3 | 68.4 | 6.3 | 0 | Danger: overvoltage |
How cold can it get before this string overvolts the EcoFlow DELTA Pro 3?
A string of 3 EcoFlow 100W Rigid panels breaches the 60 V limit of Low-PV Input even at 25 °C, before any cold correction. Voltage rises as cells cool, at EcoFlow’s published -0.33 %/°C, so a clear winter sunrise is the worst case. Stay at 2 in series or fewer there.
The cold-weather correction is the same one NEC Article 690.7 requires for PV system voltage.
Which cable connects the EcoFlow 100W Rigid to the EcoFlow DELTA Pro 3?
You need an MC4 to XT60 adapter cable, rated for at least 6.3 A, to connect this array’s output to High-PV Input. Confirm the plug against your own station’s port, and check polarity before first use. Keep runs short, because voltage drop grows with current and distance.
How long does the EcoFlow 100W Rigid take to recharge the EcoFlow DELTA Pro 3?
Expect about 14.6 peak-sun hours for a full charge from 4 panels. That’s 2.3 days in Denver, CO in June and 3.2 days in December, using a 0.70 real-world derate and NREL irradiance data. Clouds, shade and panel angle can all push it longer.
| City | June | December |
|---|---|---|
| Phoenix, AZ | 2.0 | 2.7 |
| Denver, CO | 2.3 | 3.2 |
| Los Angeles, CA | 2.2 | 3.2 |
| Austin, TX | 2.5 | 3.4 |
| Miami, FL | 2.7 | 3.1 |
| Atlanta, GA | 2.7 | 3.8 |
| Chicago, IL | 2.7 | 5.5 |
| New York, NY | 2.8 | 5.1 |
| Seattle, WA | 2.9 | 9.2 |
Where do these EcoFlow DELTA Pro 3 and EcoFlow 100W Rigid numbers come from?
Station limits come from us.ecoflow.com and panel ratings from us.ecoflow.com, each checked against a verbatim quote on that page. Panels must also pass a physics test: Vmp times Imp must land within 15% of rated watts. Anything failing goes to quarantine and gets no page.
| Rated power | 100 W | us.ecoflow.com“100 W（+/-5W）” |
|---|---|---|
| Open-circuit voltage (Voc) | 20.3 V | us.ecoflow.com“20.3 V” |
| Operating voltage (Vmp) | 17.1 V | us.ecoflow.com“17.1 V” |
| Short-circuit current (Isc) | 6.3 A | us.ecoflow.com“6.3 A” |
| Operating current (Imp) | 5.9 A | us.ecoflow.com“5.9 A” |
| Voc temperature coefficient | -0.33 %/°C | us.ecoflow.com“-0.33%/°C” |
| Output connector | MC4 | us.ecoflow.comsecondary“Photovoltaic connectors (adapted to MC4 connectors)” |
| High-PV Input | 30 to 150 V, 15 A, 1600 W | us.ecoflow.com“High-PV Input: 30V-150V⎓, 15A, 1600W Max” |
|---|---|---|
| Low-PV Input | 11 to 60 V, 20 A, 1000 W | us.ecoflow.com“Low-PV Input: 11V-60V⎓, 20A, 1000W Max” |
| High-PV Input connector | XT60 | offgridstores.comsecondary“EcoFlow Solar to XT60i Charging Cable” |
| Low-PV Input connector | XT60i | offgridstores.comsecondary“EcoFlow Solar to XT60i Charging Cable” |
Prices last checked and spec data verified on .