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Which EcoFlow Power Stations Work With the EcoFlow 45W Solar Panel?

The EcoFlow 45W Type-C solar panel works, one panel at a time, with every RIVER 2, RIVER 3 and DELTA 3 model we checked. See the cable, limits and charge times.

By SmartEnergyPH Editorial 4 min read

Checked against the sources listed below. How we research.

Key takeaways

  • The EcoFlow 45W Portable Solar Panel (Type-C) passes our voltage and current check on every RIVER 2, RIVER 3 and DELTA 3 model we checked, plus the DELTA Pro and the DELTA Pro 3's Low-PV port.
  • Use it as a single panel. Its manual describes no series or parallel wiring.
  • It connects through the DC5521-to-XT60i cable (1.5 m) that comes in the box. No extra adapter is needed.
  • Do not use the DELTA Pro 3's High-PV port: the panel's 22V operating voltage is below that port's 30V minimum.
  • It suits small stations like the RIVER 3. EcoFlow PH says it can fully charge a RIVER 3 in 6.3 hours of peak sun.
On this page
  1. The panel in numbers
  2. Compatibility table
  3. How long will it take to charge?
  4. Setup steps
  5. What to buy
  6. Bottom line

The EcoFlow 45W Portable Solar Panel (Type-C) works as a single panel with every RIVER 2, RIVER 3 and DELTA 3 model we checked, plus the DELTA Pro and the DELTA Pro 3’s Low-PV port. It plugs in with the DC5521-to-XT60i cable that comes in the box. It is best matched to small stations like the RIVER 3, which EcoFlow PH says it can fully charge in 6.3 hours of peak sun.

The panel in numbers

These figures are from EcoFlow’s Type-C manual and the PH store. The Type-C version is the only 45W option the PH store sells:

  • Rated 45W, open-circuit voltage (Voc) 25.6V, short-circuit current (Isc) 2.06A
  • Operating voltage 22V at 1.98A
  • 1.4 kg
  • Outputs: DC5521 (to a power station) and USB-C (15W max, for phones)
  • In the box: DC5521-to-XT60i cable (1.5 m) and 4 snap hooks

Because the voltage and current are low, the 45W panel stays well inside almost every EcoFlow solar input. The catch is the low wattage.

Compatibility table

Each row passed our check: Voc stays at or below 95% of the port’s maximum voltage, Isc stays at or below the port’s current limit, and operating voltage stays above the port’s minimum.

Power station Port limits Panels / wiring Usable solar Cable
RIVER 2, RIVER 3, RIVER 3 UPS 11–30V, 8A, 110W 1, single 45W Included DC5521-to-XT60i
RIVER 2 Max, RIVER 2 Pro 11–50V, 13A, 220W 1, single 45W Included
RIVER 3 Plus, RIVER 3 Max, RIVER 3 Max Plus 11–55V, 13A, 220W 1, single 45W Included
DELTA 3, DELTA 3 Classic, DELTA 3 1500 11–60V, 15A, 500W 1, single 45W Included
DELTA 3 1000 Air, 1000 Air UPS, 2000 Air 12–60V, 15A, 500W per port 1, single 45W Included
DELTA 3 Plus, DELTA 3 Max, DELTA 3 Max Plus, DELTA 3 Ultra Plus 11–60V 1, single 45W Included
DELTA Pro 11–150V, 15A, 1,600W 1, single 45W Included
DELTA Pro 3, Low-PV port 11–60V, 20A, 1,000W 1, single 45W Included

Not compatible: the DELTA Pro 3 High-PV port. It needs at least 30V, and this panel runs at 22V, so use the Low-PV port. We have not checked the DELTA Pro Ultra, because no official source confirms a cable that joins a DC5521 panel to its ports.

How long will it take to charge?

As a rough estimate, divide the battery size by the panel’s watts. This assumes full 45W output the whole time, which real sun rarely gives you:

  • RIVER 3 (245Wh): 245 ÷ 45 ≈ 5.4 hours of full output. EcoFlow PH’s own figure is 6.3 hours of peak sun, which is more realistic.
  • RIVER 2 (256Wh): about 5.7 hours of full output.
  • DELTA 3 (1,024Wh): about 23 hours of full output, which is more than two sunny days.

So for a RIVER, one 45W panel can get you through a long brownout if you use the power for light loads like phones, a router or an LED lamp. For a DELTA, it is a top-up at most. Our EcoFlow runtime calculator shows how long your own appliances will run.

Setup steps

  1. Unfold the panel in full sun, facing the sky. Shade on any part of it cuts output.
  2. Plug the DC5521 end of the included cable into the panel, and the XT60i end into the station’s solar input.
  3. Check the station’s screen or app for incoming watts.
  4. Bring the panel in before heavy rain or typhoon winds.

This is a plug-and-play setup that you can do yourself by following the manual. Anything wired into your house, breaker panel or roof needs a licensed electrician and an LGU electrical permit.

What to buy

Not sure which station fits your home? Try the which EcoFlow power station quiz.

Bottom line

The EcoFlow 45W is the safe, light choice for a RIVER 2 or RIVER 3. It is compatible with almost every EcoFlow station, as long as you avoid the DELTA Pro 3’s High-PV port. It is a single-panel product, so if you need faster charging, step up to a bigger panel instead of trying to link two 45W panels.

Run your own numbers

Frequently asked questions

Can I connect two EcoFlow 45W panels together?
The 45W Type-C panel's manual describes single-panel use only, with no series or parallel wiring. If you need more solar watts, choose a bigger panel, such as the EcoFlow 60W or 160W, that your station supports.
Does the EcoFlow 45W panel come with a cable for my power station?
Yes. The box includes a 1.5 m DC5521-to-XT60i cable, which plugs into the XT60i solar input on RIVER 2, RIVER 3 and DELTA 3 models.
Can the 45W panel charge my phone directly?
Yes. The Type-C version has a USB-C output (15W max, 5V/3A) for charging gadgets directly, as well as the DC5521 output for a power station.
Is the 45W panel worth it for a DELTA 3?
It works, but 45W is small for a 1,024Wh battery. Even with perfect sun it would need about 23 hours of full output. For a DELTA, look at the 125W, 220W or 400W panels instead.

Sources

We link to primary sources wherever possible. Rates, rules and prices change — check the latest version with the publisher.

  1. EcoFlow 45W Portable Solar Panel (Type-C) user manual (opens in a new tab) — EcoFlow
  2. EcoFlow 45W Portable Solar Panel (PH store) (opens in a new tab) — EcoFlow Philippines
  3. EcoFlow RIVER 3 user manual (opens in a new tab) — EcoFlow
  4. EcoFlow DELTA 3 user manual (opens in a new tab) — EcoFlow
  5. EcoFlow DELTA Pro 3 user manual (opens in a new tab) — EcoFlow

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