EcoFlow RIVER 2 Max 500 with the EcoFlow 45W Portable
Unverified
This page is excluded from search: No verified way to connect this panel to this station.
The EcoFlow 45W Portable has a DC5521 output, so it can’t be wired in series or parallel from its own leads. We evaluate one panel per port.
We have no verified cable from the panel’s DC5521 output to a XT60i port.
Thick mark: cold Voc · Thin mark: operating Vmp, 21.9 V
1 caveat
- The maker publishes no temperature coefficient, so cold voltage uses our conservative −0.40 %/°C.
Parts for this layout
Don’t buy this combination. Change the layout until the check above passes.
- EcoFlow RIVER 2 Max 500$329 View on Amazon
- EcoFlow 45W Portable$99 View on Amazon
Estimated total $428
Prices can change. The price on Amazon at purchase is what applies.
Can I connect the EcoFlow 45W Portable to the EcoFlow RIVER 2 Max 500?
Not with parts we can verify. The EcoFlow 45W Portable has a DC5521 output and we found no verified cable to the EcoFlow RIVER 2 Max 500’s XT60i input. The 11 to 50 V limits don’t matter until there’s a safe connection, so choose a different panel.
What is the best way to wire EcoFlow 45W Portable panels to the EcoFlow RIVER 2 Max 500?
We can’t recommend a wiring layout for this pair. We tested every series and parallel combination the panel’s leads allow, across 1 port and four temperature bands, and none passed every check. The table below shows the exact limit each layout hits, so you can compare another panel.
| Port | Layout | Voc 25 °C | Voc 0 °C | Voc −10 °C | Voc −20 °C | Vmp | Isc | Watts | Verdict at −10 °C |
|---|---|---|---|---|---|---|---|---|---|
| Solar Input | 1S1P | 25.6 | 28.2 | 29.2 | 30.2 | 21.9 | 2.1 | 44 | Unverified |
How cold can it get before this string overvolts the EcoFlow RIVER 2 Max 500?
Cold doesn’t change the answer for this pair within our −25 °C test range. Using our assumed −0.40 %/°C (no figure is published), each EcoFlow 45W Portable panel rises from 25.6 V at 25 °C to 30.7 V at −25 °C, and that stays inside the 50 V limit of Solar Input.
The cold-weather correction is the same one NEC Article 690.7 requires for PV system voltage.
Which cable connects the EcoFlow 45W Portable to the EcoFlow RIVER 2 Max 500?
No cable makes this pair worth buying yet. We have no verified adapter or no working layout for the EcoFlow 45W Portable on the EcoFlow RIVER 2 Max 500, so we aren’t recommending parts. Check the port labels on your own unit, and compare the 11 to 50 V input window against your panel’s label.
How long does the EcoFlow 45W Portable take to recharge the EcoFlow RIVER 2 Max 500?
We can’t give a recharge time for this pair because no verified layout works. For comparison, the EcoFlow RIVER 2 Max 500 stores 499 Wh, so any panel needs to deliver real power to its 11 to 50 V input before the sun-hour maths means anything at all.
Where do these EcoFlow RIVER 2 Max 500 and EcoFlow 45W Portable 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 | 45 W | us.ecoflow.com“45W (±3W)” |
|---|---|---|
| Open-circuit voltage (Voc) | 25.6 V | us.ecoflow.com“25.6V” |
| Operating voltage (Vmp) | 21.9 V | us.ecoflow.com“21.9V” |
| Short-circuit current (Isc) | 2.06 A | us.ecoflow.com“2.06A” |
| Operating current (Imp) | 2 A | us.ecoflow.com“2.0A” |
| Voc temperature coefficient | −0.40 %/°C | Assumed: not published by the maker |
| Output connector | DC5521 | us.ecoflow.com“Type-C” |
| Solar Input | 11 to 50 V, 13 A, 220 W | us.ecoflow.com“11-50V, 13A, 220W Max” |
|---|---|---|
| Solar Input connector | XT60i | us.ecoflow.com“Works best with RIVER 2/RIVER 2 Max/RIVER 2 Pro” |
Prices last checked and spec data verified on .