EcoFlow 220W Bifacial Photo voltaic Panel Evaluate – The proper photo voltaic panel for the EcoFlow RIVER 2 | Sprite Tech

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220W EcoFlow Bifacial Photo voltaic Panel Analysis


The EcoFlow 220W bifacial photo voltaic panel is a wonderful photo voltaic panel. It is simpler to arrange than the spectacular 400W, and also you get extra bang in your buck with the ambient gentle facet that pushes photo voltaic enter larger than you’d get with a single-sided panel.


  • Improved efficiency vs. single-sided panels at no further value in contrast


  • A bit tough to arrange utilizing the bag/stand

Throughout my evaluation of the EcoFlow RIVER 2, I used to be additionally testing the 220W bifacial photo voltaic panel. It is a distinctive photo voltaic panel in comparison with most others available on the market.

Because the identify suggests, there are photo voltaic panels on each side. The rear permits the panel to seize further ambient gentle.

It isn’t essentially the most environment friendly option to accumulate gentle, however EcoFlow claims it would seize as much as 25% extra photo voltaic vitality in the event you conveniently place it on a mirror. For extra reasonable use, the panel will accumulate virtually a further 10% in each cement and sand. This drops to 7.2% for grass.

EcoFlow would not appear to cost you way more for the additional panels within the rear. This 220W panel is £549 whereas the 400W panel is £999, so the worth scales properly with photo voltaic enter, though the 400W mannequin is single sided solely.


Beneath EcoFlow 220W bifacial photo voltaic panel
  • Rated Energy: 220W Entrance / 155W Rear
  • Effectivity: 22-23%
  • Open Circuit Voltage: 21.8V (Vmp 18.4V)
  • Cell Sort: Monocrystalline Silicon
  • Quick circuit present: 13A (Imp 12.0A) Entrance facet / 8.8A (Imp8.4A) Again facet
  • Dimensions: 82*183*2.5cm (32.3*72.0*1.0in)
  • Weight (photo voltaic panel): approx. 9.5kg (20.9lbs)

220W EcoFlow bifacial photo voltaic panel vs. 400W photo voltaic panel

Since I’ve 220W and 400W photo voltaic panels, I assumed it will be good to set them up so that you get an concept of ​​the scale distinction.

The 220W mannequin weighs 9.5kg (photo voltaic panel solely), whereas the 400W mannequin weighs 16.0kg (19kg with case). Subjectively, the 400W panel feels heavy to hold. As a consequence of its dimensions, I additionally need to bend my arm a bit to stop it from hitting the bottom, rising the perceived weight. The 220W mannequin looks like carrying a buying bag, you possibly can really feel the load, however it’s not an issue.


The general dimensions and weight of this panel make it a lot simpler to deal with than the 400W panel. Simply carrying the 400W panel feels a bit awkward because of the measurement and weight, whereas that is way more handy.

Setting it up can also be a lot simpler. The unfolded dimensions are a lot smaller, as is the load.

The best way EcoFlow makes use of the carrying case as a stand takes some getting used to, however it works successfully, though it’s slower than putting in smaller panels just like the SolarSaga 100W.

Efficiency with EcoFlow RIVER 2 MAX and DELTA 2

The climate hasn’t been excellent within the north of the UK not too long ago. We now have had a couple of days of partially cloudy climate the place I’ve been capable of take a look at issues. Partly cloudy might be the almost definitely situation all year long within the UK, so that is maybe essentially the most reasonable testing surroundings.

The EcoFlow RIVER 2 MAX has a most enter of 220W, and that is the utmost enter I managed to attain with the 220W bifacial.

Whereas this will seize 220W on the principle facet and 155W on the rear facet, the height I noticed on the EcoFlow DELTA 2 was additionally 220W. That is wonderful contemplating the height I’ve seen on the panel of 400 W is about 320 W.

Whereas I can not make sure the sunshine depth was the identical in each eventualities, in principle if I had two 220W panels in sequence it ought to have hit 440W. That is 37.5% greater than the 320W I’ve achieved on the 400W panel, however the price of two 220W panels is barely 10% extra.

As anticipated, when clouds cowl the solar, the photo voltaic enter drops off drastically. I would say it will be reduce in half more often than not.

Worth and various choices

The 220W EcoFlow bifacial photo voltaic panel is priced at £549.00, making it simply over half the worth of the 400W photo voltaic panel, however lower than double the worth of the 110W photo voltaic panel:

So as of value:

I used to be inquisitive about value vs efficiency, so the price per watt is:

  • EcoFlow 400W Photo voltaic Panel – £2.5
  • EcoFlow 220W bifacial photo voltaic panel – £2.5
  • EcoFlow 160W Photo voltaic Panel – £2.37
  • EcoFlow 110W photo voltaic panel: £2.63 (and that is the low cost value of £289)


Personally, I want the 220W EcoFlow bifacial photo voltaic panel to the 400W panel. Whereas I have not examined this situation, I feel I would slightly have two 220W bifacial panels working in sequence than the one 400W panel. Clearly, I would need to transporting and organising two panels, however I discover the general dimensions and weight of every particular person panel makes the job simpler.

Two 220W bifacial panels will value round 10% greater than a single 400W panel (and value the identical per watt). In principle, it ought to present superior efficiency because it has a 220W major facet and a 155W rear facet. In my checks, I skilled as much as a 37.5% distinction.

I am assuming that having panels in sequence will scale at a linear fee, and in that case, my testing would point out that you simply’d get higher outcomes with two of those.

You’d even have the flexibleness to make use of only one panel if you need a bit extra portability.

In fact, you probably have an EcoFlow energy station that may settle for greater than 800W photo voltaic enter, then a number of 400W panels can be extra enticing than a number of 220W panels.

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