Ecoflow River Over Panel.

[blastic]

Hi y'all. I am trying to figure out if I can safely over-panel my Ecoflow River 600 It says you can use up to 2 110w panels in parallel. Could I use 3 or 4 100w panels in parallel? I am new to this, so if this a 'duh' question, I am sorry. Thanks!

 

[seanbjornsson]

I am also trying to find the answer to this question, except too much voltage as opposed to too much amperage.
I am trying to see if I can plug this 260W solar panel into the ecoflow river max. The solar panel says it has an open circuit voltage of 37.6 V.
The ecoflow river max says it has a solar charge input of "200W 10-25V DC 12A Max".

Does anyone know if I will need to reduce the voltage to 25V max to get this to work together nicely?
Or any other creative ideas? Or should I just give up on this idea?

Blastic, to your point, I *think* you just want to stay below 12A? Therefore (using this rich solar panel as an example) I think putting 3 in parallel would go over 12A.

I'm honestly just starting to learn about all this myself, so I could be way off.

 

[Bud Martin]

You cannot feed more than 25V into the SCC PV input, you will damage the SCC, the panel Voltage will also go up when it is cold.

 

[seanbjornsson]

Yeah. That's what I was thinking as well. I am exploring voltage regulators right now, but it seems like not a great solution for an otherwise "out of the box" setup.

 

[SolarJedi]

Over paneled my River Pro today and found out a few things. Background: camping a few weeks I had a Renogy 200w briefcase panel that gave me about 140w max in direct sunlight which I think is decent as you never get the max of what's advertised and was eyeballing the setup. So I decided to supplement it with another 120w Elecaenta panel last week (btw the Elecaenta is wayyy more portable than the Renogy), but I was maxing at 107w input when both hooked up using a xt60 splitter. I was perplexed by this as I was pulling close to 100w individually prior to putting them in parallel together. Ah ha! My issue was I turned OFF recharging boost when I got home after camping, the feature which usually gives you 600w input via AC but when it's turned off tops you off at 200w input for AC to prolong the battery on the River Pro. I didn't think it made a difference with DC but I was wrong. Recharging boost OFF will throttle you at 107w max input on DC! So once I turned quick recharge on again, I was getting about 165w input on solar instantly. Then I thought what the heck, let's do another 120w Elecaenta with another xt60 splitter (2 Elecanetas into 1, and then into another splitter with the Renogy) for 440w total in and finally got 197w max sustained. I covered a side of one of the Elecaentas and was still getting 197w, so I think 197w input DC is max. This recharged my River Pro from 1% (drained it the night before to do this test) to 100% in less than 4 hours. Per the app, the temp topped out at 91 degrees with a 70 degree ambient and I felt all the cables regularly throughout the test, I didn't notice any heat coming from them at all. I was adjusting the panels and playing around which combos gave me various inputs (as seen in the screenshot graph) and noticed the system is sensitive to the sequence they're plugged in at. I not 100% sure but when I plugged the Renogy in first and the Elecaentas 2nd I maxed at 147w, but when I unplugged the Renogy and plugged it back in and got 197w again. Not sure why this happened, but just needed to play around with the sequence I plugged them in at. Hope this info helps!

 

[Bud Martin]

So you parallel 200W panel with 120W panel, correct?
What is the Voc/Vmp of the 200W panel and the 120W panel?
You cannot parallel two panels in parallel if the they have large difference on the Voc because the one with the lower Voc will load down the one with higher Voc.

Mixing solar panels – Dos and Don’ts • SOLAR POWER SECRETS

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