Solar Panels for the EcoFlow DELTA 3 Max: Why Its 13A Input Changes the Picks
Solar panels for the EcoFlow DELTA 3 Max: its 11-60V, 13A, 500W input rules out the 400W rigid panel. Verified setups, bifacial cautions and charge times.
Checked against the sources listed below. How we research.
Key takeaways
- The DELTA 3 Max has one XT60i solar input: 11-60V, 13A, 500W max. That 13A is the lowest current limit in the DELTA 3 family (others are 15A).
- The EcoFlow 400W rigid panel does NOT fit: its 13.79A short-circuit current is over 13A.
- Cleanest verified pick: two 220W single-face panels in series (43V, 12.4A, 440W).
- One 400W Lightweight or four 125W bifacial in parallel also pass on standard figures, but their bifacial back-side current (13.5A / 13.6A) can exceed 13A.
- With only 500W of solar for a 2048Wh battery, a best-case refill takes about 4.1 hours or more.
On this page
For the EcoFlow DELTA 3 Max, the cleanest verified setup is two EcoFlow 220W single-face panels in series (440W). Its one XT60i solar input is rated 11-60V, 13A and 500W, and that lower 13A limit rules out the EcoFlow 400W rigid panel.
Why the DELTA 3 Max is different
Every other DELTA 3 model in this series accepts 15A per solar input. The DELTA 3 Max manual says total short-circuit current (Isc) must stay within 13A. That small difference changes which panels fit:
- 400W rigid panel: 13.79A. Over 13A, so not OK, even as a single panel.
- Four 60W panels in parallel: 14A (worst-case figures). Not OK here, though it passes on 15A models.
The voltage rule is the same as the rest of the family: total open-circuit voltage within 60V.
Compatibility
| Panel | Setup | Volts / amps | Usable W | Status | Cable |
|---|---|---|---|---|---|
| 220W single-face | 2 in series | 43V / 12.4A | 440W | OK | MC4-to-XT60i included |
| 160W single-face | 2 in series | 42.6V / 9.1A | 320W | OK | MC4-to-XT60i included |
| 125W bifacial | 3 in parallel | 50V / 9.6A | 375W | OK | XT60W-to-XT60i included |
| 125W bifacial | 4 in parallel | 50V / 12.8A | 500W | OK, with bifacial caution | Same |
| 400W Lightweight | 1, single | 39.3V / 12.2A | 400W | OK, with bifacial caution | None, built-in XT60 |
| 400W rigid | 1, single | 37.1V / 13.79A | — | Not OK (over 13A) | — |
| 400W Lightweight | 2 in series | 78.6V | — | Not OK (over 60V) | — |
| 220W / 160W | 2 in parallel | 24.8A / 18.2A | — | Not OK (over 13A) | — |
The bifacial caution
The 400W Lightweight and 125W panels are bifacial: they also collect light on the back. EcoFlow publishes a second, higher current for this (BNPI). Our check uses the standard (STC) current, and both panels pass. But the bifacial figures, 13.5A for one 400W Lightweight and 13.6A for four 125W panels, are above this station’s 13A.
If you want clear headroom on the DELTA 3 Max, pick two 220W single-face panels in series (12.4A, no bifacial gain) or three 125W bifacial panels (9.6A).
Charging estimate
The DELTA 3 Max holds 2048Wh, but solar is capped at 500W. Best case, hours ≈ 2048Wh ÷ usable watts:
- 500W (4 × 125W): about 4.1 hours
- 440W (2 × 220W series): about 4.7 hours
- 400W (1 × 400W Lightweight): about 5.1 hours
Real-world output is lower, so a full refill from empty may take more than one day of sun, especially during the rainy season. It can’t take extra batteries; EcoFlow says battery expansion is for the DELTA 3 Max Plus only.
Setup steps
- Put both 220W panels in full sun.
- Join their MC4 leads in series (male to female), then fit the included MC4-to-XT60i cable.
- Plug into the DELTA 3 Max’s XT60i input and check incoming watts.
Portable panels can be set up by the owner following the manual. Anything wired into your house, breaker panel, roof or the grid needs a licensed electrician (PEE) and an LGU electrical permit.
What to buy
- EcoFlow DELTA 3 Max on Shopee or on Lazada (EcoFlow official shops)
- 2 × EcoFlow 220W single-face on Lazada, or
- 3 × EcoFlow 125W bifacial on Lazada or on Shopee
- Skip the 400W rigid pack for this station.
Check today’s price. See the DELTA 3 Max buyer guide and the EcoFlow runtime calculator.
Bottom line
The DELTA 3 Max’s 13A input is the one to watch. Two 220W single-face panels in series (440W) fit with no caveats, and the 400W rigid panel doesn’t fit at all.
Run your own numbers
Frequently asked questions
Can I use the EcoFlow 400W rigid solar panel with the DELTA 3 Max?
What is the maximum solar input of the EcoFlow DELTA 3 Max?
How many 125W EcoFlow panels can I connect to a DELTA 3 Max?
Sources
We link to primary sources wherever possible. Rates, rules and prices change — check the latest version with the publisher.
- DELTA 3 Max user manual (Solar 11V-60V 13A 500W max; 1 XT60i port) (opens in a new tab) — EcoFlow
- DELTA 3 Max Series Portable Power Station (DELTA 3 Max 500W solar) (opens in a new tab) — EcoFlow UK (official store)
- DELTA 3 Max Portable Power Station (opens in a new tab) — EcoFlow Philippines (official store)
- 400W Rigid Solar Panel (per-panel specs, 2 x 400W pack) (opens in a new tab) — EcoFlow US (official store)
- NextGen 220W Portable Solar Panel user manual (opens in a new tab) — EcoFlow
- 400W Lightweight Solar Panel user manual (STC and BNPI current) (opens in a new tab) — EcoFlow
- 125W Bifacial Modular Solar Panel user manual (opens in a new tab) — EcoFlow