Best Solar Panels for the EcoFlow Delta Pro Ultra

We tested 20 solar panels against the Delta Pro Ultra's 80–450V MPPT range and 5600W input limit. This generator has dual solar input ports.

5600W max input MPPT 80–450V MC4 6144Wh

EcoFlow Delta Pro Ultra portable power station

Our Picks

Best Match

Anker SOLIX PS400 Portable Solar Panel (400W)

400W delivered 21.9h charge

Anker SOLIX PS400 Portable Solar Panel (400W) delivers 400W to the Delta Pro Ultra with 0% loss — no adapter needed, full MPPT alignment.

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Fastest Charge

EcoFlow NextGen 220W Bifacial Portable Solar Panel

1100W delivered 8h charge

Charges the Delta Pro Ultra (6144Wh) in ~8 hours (real-world estimate at 70% derate). Charging is capped at 1100W.

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Most Compact

Jackery SolarSaga 80W Solar Panel

320W delivered 27.4h charge Adapter needed

At 80W, the Jackery SolarSaga 80W Solar Panel is the smallest compatible panel for the Delta Pro Ultra — easier to transport and store.

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6144Wh · 6000W continuous · 5600W solar input

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All 20 Panels Compared

Panel	Watts	Status	Delivered	Charge Time	Efficiency	Adapter
Anker SOLIX PS400 Portable Solar Panel (400W) Vmp 48V · Voc 60V	400W	Compatible	400W	21.9h	100%	—
EcoFlow 400W Portable Solar Panel Vmp 41V · Voc 48V	400W	Compatible	400W	21.9h	100%	—
EcoFlow 400W Rigid Solar Panel Vmp 31V · Voc 37.1V	400W	Compatible	400W	21.9h	100%	—
Bluetti PV350 Solar Panel Vmp 37.5V · Voc 46.5V	350W	Compatible	350W	25.1h	100%	—
EcoFlow NextGen 220W Bifacial Portable Solar Panel Vmp 18.4V · Voc 21.5V	220W	Limited	1100W	8h	100%	—
Goal Zero Nomad 200 Solar Panel Vmp 19.1V · Voc 23V	200W	Limited	1000W	8.8h	100%	Goal Zero proprietary -> MC4 adapter required
Bluetti PV200 Solar Panel Vmp 20.5V · Voc 26.1V	200W	Limited	800W	11h	100%	—
BougeRV Yuma 200W CIGS Thin-Film Flexible Solar Panel Vmp 24V · Voc 30.4V	200W	Limited	800W	11h	100%	—
EcoFlow NextGen 160W Solar Panel Vmp 18.6V · Voc 21.3V	160W	Limited	800W	11h	100%	—
Jackery SolarSaga 200W Solar Panel Vmp 20V · Voc 24.8V	200W	Limited	800W	11h	100%	Jackery proprietary -> MC4 adapter required
Renogy 200W Monocrystalline Foldable Solar Suitcase Vmp 20.4V · Voc 24.3V	200W	Limited	800W	11h	100%	—
Renogy E.FLEX 200W Portable Solar Panel Vmp 20.3V · Voc 23.9V	200W	Limited	800W	11h	100%	—
Bluetti PV120 Solar Panel Vmp 19.6V · Voc 24.4V	120W	Limited	600W	14.6h	100%	—
EcoFlow 110W Solar Panel Vmp 18.5V · Voc 21.7V	110W	Limited	550W	16h	100%	—
Goal Zero Boulder 100 Briefcase Solar Panel Vmp 17.2V · Voc 21.5V	100W	Limited	500W	17.6h	100%	Goal Zero proprietary -> MC4 adapter required
Rich Solar MEGA 100 Portable Briefcase Solar Panel Vmp 18.6V · Voc 22.8V	100W	Limited	500W	17.6h	100%	—
Anker SOLIX PS100 Portable Solar Panel (100W) Vmp 24.5V · Voc 28.5V	100W	Limited	400W	21.9h	100%	—
Jackery SolarSaga 100W Solar Panel Vmp 20V · Voc 24.8V	100W	Limited	400W	21.9h	100%	Jackery proprietary -> MC4 adapter required
Renogy 100W Flexible Solar Panel Vmp 20.7V · Voc 24.4V	100W	Limited	400W	21.9h	100%	Renogy proprietary -> MC4 adapter required
Jackery SolarSaga 80W Solar Panel Vmp 22V · Voc 28.5V	80W	Limited	320W	27.4h	100%	Jackery proprietary -> MC4 adapter required

Panel Details

Compatible Anker SOLIX PS400 Portable Solar Panel (400W) 400W

Voc

60V

Vmp

48V

Isc

N/A

Imp

8.33A

Cold Voc: 60 x 1.2 = 72.0V (under 450V limit)

MPPT: 48V (outside 80–450V range)

Current: 8.33A (within 15A limit)

Source: Anker Support — Specifications of A2433 Anker SOLIX PS400 Portable Solar Panel

Compatible EcoFlow 400W Portable Solar Panel 400W

Voc

48V

Vmp

41V

Isc

11A

Imp

9.8A

Cold Voc: 48 x 1.2 = 57.6V (under 450V limit)

MPPT: 41V (outside 80–450V range)

Current: 9.8A (within 15A limit)

Source: EcoFlow 400W Portable Solar Panel User Manual V1.0

Compatible EcoFlow 400W Rigid Solar Panel 400W

Voc

37.1V

Vmp

31V

Isc

13.79A

Imp

12.9A

Cold Voc: 37.1 x 1.2 = 44.5V (under 450V limit)

MPPT: 31V (outside 80–450V range)

Current: 12.9A (within 15A limit)

Source: EcoFlow 400W Rigid Solar Panel - US Product Page

Compatible Bluetti PV350 Solar Panel 350W

Voc

46.5V

Vmp

37.5V

Isc

10.8A

Imp

9.2A

Cold Voc: 46.5 x 1.2 = 55.8V (under 450V limit)

MPPT: 37.5V (outside 80–450V range)

Current: 9.2A (within 15A limit)

Source: BLUETTI PV350 Solar Panel - Official Product Page

Limited EcoFlow NextGen 220W Bifacial Portable Solar Panel 220W

Voc

21.5V

Vmp

18.4V

Isc

12.4A

Imp

11.9A

Cold Voc: 21.5 x 1.2 = 129.0V (under 450V limit)

MPPT: 18.4V (outside 80–450V range)

Current: 11.9A (within 15A limit)

Warnings:

- Requires 5 panels in series to reach the 80V start threshold.

Source: EcoFlow NextGen 220W Bifacial Portable Solar Panel - US Product Page

Limited Goal Zero Nomad 200 Solar Panel 200W

Voc

23V

Vmp

19.1V

Isc

N/A

Imp

10.47A

Cold Voc: 23 x 1.2 = 138.0V (under 450V limit)

MPPT: 19.1V (outside 80–450V range)

Current: 10.47A (within 15A limit)

Warnings:

- Adapter required: Goal Zero proprietary -> MC4 adapter required.

- Requires 5 panels in series to reach the 80V start threshold.

Source: Goal Zero Nomad 200 Solar Panel — Official Product Page

Limited Bluetti PV200 Solar Panel 200W

Voc

26.1V

Vmp

20.5V

Isc

10.3A

Imp

9.7A

Cold Voc: 26.1 x 1.2 = 125.3V (under 450V limit)

MPPT: 20.5V (outside 80–450V range)

Current: 9.7A (within 15A limit)

Warnings:

- Requires 4 panels in series to reach the 80V start threshold.

Source: BLUETTI PV200 Solar Panel - Official Product Page

Limited BougeRV Yuma 200W CIGS Thin-Film Flexible Solar Panel 200W

Voc

30.4V

Vmp

24V

Isc

9.48A

Imp

8.52A

Cold Voc: 30.4 x 1.2 = 145.9V (under 450V limit)

MPPT: 24V (outside 80–450V range)

Current: 8.52A (within 15A limit)

Warnings:

- Requires 4 panels in series to reach the 80V start threshold.

Source: BougeRV CIGS Thin-film Solar Panel User Manual — Yuma200 Electrical Parameters (p.12)

Limited EcoFlow NextGen 160W Solar Panel 160W

Voc

21.3V

Vmp

18.6V

Isc

9.1A

Imp

8.6A

Cold Voc: 21.3 x 1.2 = 127.8V (under 450V limit)

MPPT: 18.6V (outside 80–450V range)

Current: 8.6A (within 15A limit)

Warnings:

- Requires 5 panels in series to reach the 80V start threshold.

Source: EcoFlow NextGen 160W Solar Panel - Official Product Page

Limited Jackery SolarSaga 200W Solar Panel 200W

Voc

24.8V

Vmp

20V

Isc

11.2A

Imp

10A

Cold Voc: 24.8 x 1.2 = 119.0V (under 450V limit)

MPPT: 20V (outside 80–450V range)

Current: 10A (within 15A limit)

Warnings:

- Adapter required: Jackery proprietary -> MC4 adapter required.

- Requires 4 panels in series to reach the 80V start threshold.

Source: Jackery Solar Panels Guide (SolarSaga 200W specs)

Limited Renogy 200W Monocrystalline Foldable Solar Suitcase 200W

Voc

24.3V

Vmp

20.4V

Isc

10.42A

Imp

9.82A

Cold Voc: 24.3 x 1.2 = 116.6V (under 450V limit)

MPPT: 20.4V (outside 80–450V range)

Current: 9.82A (within 15A limit)

Warnings:

- Requires 4 panels in series to reach the 80V start threshold.

Source: Renogy 100W/200W Monocrystalline Foldable Solar Suitcase with Voyager User Manual (RNG-KIT-STCS200D-VOY20, Version A0)

Limited Renogy E.FLEX 200W Portable Solar Panel 200W

Voc

23.9V

Vmp

20.3V

Isc

10.49A

Imp

9.86A

Cold Voc: 23.9 x 1.2 = 114.7V (under 450V limit)

MPPT: 20.3V (outside 80–450V range)

Current: 9.86A (within 15A limit)

Warnings:

- Requires 4 panels in series to reach the 80V start threshold.

Source: Renogy E.FLEX 200W Portable Solar Panel - Product Page

Limited Bluetti PV120 Solar Panel 120W

Voc

24.4V

Vmp

19.6V

Isc

6.43A

Imp

6.1A

Cold Voc: 24.4 x 1.2 = 146.4V (under 450V limit)

MPPT: 19.6V (outside 80–450V range)

Current: 6.1A (within 15A limit)

Warnings:

- Requires 5 panels in series to reach the 80V start threshold.

Source: BLUETTI PV120 Solar Panel - Official Product Page

Limited EcoFlow 110W Solar Panel 110W

Voc

21.7V

Vmp

18.5V

Isc

6.3A

Imp

Cold Voc: 21.7 x 1.2 = 130.2V (under 450V limit)

MPPT: 18.5V (outside 80–450V range)

Current: 6A (within 15A limit)

Warnings:

- Requires 5 panels in series to reach the 80V start threshold.

Source: EcoFlow 110W Solar Panel - Official Product Page

Limited Goal Zero Boulder 100 Briefcase Solar Panel 100W

Voc

21.5V

Vmp

17.2V

Isc

N/A

Imp

5.81A

Cold Voc: 21.5 x 1.2 = 129.0V (under 450V limit)

MPPT: 17.2V (outside 80–450V range)

Current: 5.81A (within 15A limit)

Warnings:

- Adapter required: Goal Zero proprietary -> MC4 adapter required.

- Requires 5 panels in series to reach the 80V start threshold.

Source: Goal Zero Boulder 100 Briefcase — Official Product Page

Limited Rich Solar MEGA 100 Portable Briefcase Solar Panel 100W

Voc

22.8V

Vmp

18.6V

Isc

5.78A

Imp

5.38A

Cold Voc: 22.8 x 1.2 = 136.8V (under 450V limit)

MPPT: 18.6V (outside 80–450V range)

Current: 5.38A (within 15A limit)

Warnings:

- Requires 5 panels in series to reach the 80V start threshold.

Source: Rich Solar MEGA 100 Portable Briefcase Solar Panel Datasheet (RS-X100B)

Limited Anker SOLIX PS100 Portable Solar Panel (100W) 100W

Voc

28.5V

Vmp

24.5V

Isc

N/A

Imp

4.1A

Cold Voc: 28.5 x 1.2 = 136.8V (under 450V limit)

MPPT: 24.5V (outside 80–450V range)

Current: 4.1A (within 15A limit)

Warnings:

- Requires 4 panels in series to reach the 80V start threshold.

Source: Anker SOLIX PS100 Portable Solar Panel User Guide (A2434)

Limited Jackery SolarSaga 100W Solar Panel 100W

Voc

24.8V

Vmp

20V

Isc

5.4A

Imp

Cold Voc: 24.8 x 1.2 = 119.0V (under 450V limit)

MPPT: 20V (outside 80–450V range)

Current: 5A (within 15A limit)

Warnings:

- Adapter required: Jackery proprietary -> MC4 adapter required.

- Requires 4 panels in series to reach the 80V start threshold.

Source: Jackery Solar Panels Guide (SolarSaga 100W specs)

Limited Renogy 100W Flexible Solar Panel 100W

Voc

24.4V

Vmp

20.7V

Isc

5.16A

Imp

4.84A

Cold Voc: 24.4 x 1.2 = 117.1V (under 450V limit)

MPPT: 20.7V (outside 80–450V range)

Current: 4.84A (within 15A limit)

Warnings:

- Adapter required: Renogy proprietary -> MC4 adapter required.

- Requires 4 panels in series to reach the 80V start threshold.

Source: Renogy 100W Flexible Solar Panel - Official Product Page

Limited Jackery SolarSaga 80W Solar Panel 80W

Voc

28.5V

Vmp

22V

Isc

3.71A

Imp

3.64A

Cold Voc: 28.5 x 1.2 = 136.8V (under 450V limit)

MPPT: 22V (outside 80–450V range)

Current: 3.64A (within 15A limit)

Warnings:

- Adapter required: Jackery proprietary -> MC4 adapter required.

- Requires 4 panels in series to reach the 80V start threshold.

Source: Jackery SolarSaga 80 User Guide (JS-80A, Jackery-UM-002)

Understanding Solar Compatibility with the Delta Pro Ultra

MPPT Range & Why It Matters

The Delta Pro Ultra accepts solar input between 80V and 450V (MPPT range). Panels with Vmp below 80V won't start charging — the MPPT controller can't lock on. Panels with Vmp above 450V may damage the input circuit. This generator has a secondary solar input (30–150V) for lower-voltage panels.

Cold Weather Voltage Safety

We apply a 1.2x safety margin to each panel's open-circuit voltage (Voc) to account for cold temperatures, when solar cells produce higher voltage. The Delta Pro Ultra's maximum input voltage is 450V. Any panel whose Voc x 1.2 exceeds 450V is flagged as a voltage danger. 20 of 20 panels pass this safety check.

Cables & Adapters for the Delta Pro Ultra

The Delta Pro Ultra uses a MC4 solar input connector. MC4 is the industry standard for rigid and portable solar panels. Most panels connect directly. 6 of 20 panels require an adapter with this unit.

Frequently Asked Questions

Can I use any solar panel with the EcoFlow Delta Pro Ultra?

No. The Delta Pro Ultra requires panels with Vmp between 80V and 450V, and cold-weather Voc (Voc x 1.2) under 450V. Of the 20 panels we tested, 4 are fully compatible, 16 work with limitations, and 0 are incompatible.

How long does it take to charge the Delta Pro Ultra with solar?

With the fastest compatible panel (EcoFlow NextGen 220W Bifacial Portable Solar Panel, 1100W delivered), the Delta Pro Ultra (6144Wh) charges in approximately 8 hours under real-world conditions (70% derate for angle, clouds, and temperature). The slowest compatible option (Jackery SolarSaga 80W Solar Panel) takes approximately 27.4 hours.

Do I need an adapter for solar charging the Delta Pro Ultra?

The Delta Pro Ultra uses a MC4 connector. 6 of 20 panels require an adapter. The remaining panels connect directly via MC4.

What is the secondary solar input on the Delta Pro Ultra?

The Delta Pro Ultra has two solar input ports. The primary accepts 80–450V; the secondary accepts 30–150V. Lower-voltage panels that can't reach the primary's minimum are automatically matched to the secondary port.